Zsolt Podolyak

Professor Zsolt Podolyak


Professor
+44 (0)1483 686811
05 BB 03

Academic and research departments

Department of Physics.

Biography

University roles and responsibilities

  • PGT Director
  • Programme Leader for the MSc Radiation and Environmental Protection
  • Programme Leader for the MSc Nuclear Science and Applications

    My qualifications

    1992
    MSc
    Babes-Bolyai University, Cluj, Romania
    1995
    PhD
    Kossuth Lajos University (Institute of Nuclear Research ATOMKI), Debrecen, Hungary
    2009
    MBA
    Open University, UK

    Previous roles

    1996 - 1996
    Assistant Professor
    Babes-Bolyai University, Cluj, Romania
    1996 - 1998
    Postdoctoral fellow
    Legnaro National Laboratories, Italy
    2001 - 2009
    EPSRC/STFC Advanced Fellow
    University of Surrey

    Research

    Research interests

    My teaching

    Courses I teach on

    Postgraduate taught

    My publications

    Highlights

    C.M. Shand, Zs. Podolyák et al., Phys. Lett. B773, 492 (2017)

    Shell evolution beyond Z=28 and N=50: Spectroscopy of 81,82,83,84Zn

    http://dx.doi.org/10.1016/j.physletb.2017.09.001

    Zs. Podolyák, C.M. Shand et al., Phys. Rev. Lett. 117, 222302 (2016)

    Role of the Delta resonance in the population of a four-nucleon state in the  56Fe -> 54Fe reaction at relativistic energies

    doi: 10.1103/PhysRevLett.117.222302

    N.Nishimura, Zs.Podolyák, D.-L.Fang, T.Suzuki, Phys.Lett. B 756, 273 (2016)

    Impact of the first-forbidden β decay on the production of A 195 r-process peak

    doi: 10.1016/j.physletb.2016.03.025

    Z.Patel, Zs.Podolyák et al., Phys.Lett. B 753, 182 (2016)

    Decay spectroscopy of 160Sm: The lightest four-quasiparticle K isomer

    doi: 10.1016/j.physletb.2015.12.026

    E.Wilson, Zs.Podolyák et al., Phys.Lett. B 747, 88 (2015)

    Core excitations across the neutron shell gap in 207Tl

    doi: 10.1016/j.physletb.2015.04.055

    Z.Patel, P.A.Söderström, Zs.Podolyák, P.H.Regan, P.M.Walker et al., Phys. Rev. Lett. 113, 262502 (2014)

    Isomer decay spectroscopy of 164Sm and 166Gd: Midshell collectivity around N=100

    doi: 10.1103/PhysRevLett.113.262502

    Publications

    H Grawe, P.H Regan, K Straub, ZSOLT PODOLYAK, T Faestermann, M Górska, C Hinke, R Krücken, F Nowacki, M Böhmer, P Boutachkov, H Geissel, R Gernhäuser, A Gottardo, J Grȩbosz, N Kurz, Z Liu, L Maier, K Steiger, S Pietri, H.J Wollersheim, H Weick, Zs Podolyák, P.J Woods, N Al-Dahan, N Alkhomashi, A Ataç, A Blazhev, N Braun, I Čeliković, T Davinson, I Dillmann, C Domingo-Pardo, P Doornenbal, G Farrelly, F Farinon, G de France, J Gerl, N Goel, T Habermann, R Hoischen, R Janik, M Karny, A Kaşkaş, I Kojouharov, Th Kröll, M Lewitowicz, Yu.A Litvinov, S Myalski, F Nebel, S Nishimura, C Nociforo, J Nyberg, A Parikh, A Procházka, C Rigollet, H Schaffner, C Scheidenberger, S Schwertel, P.-A Söderström, S Steer, A Stolz, P Strmeň, (2021)The (6+) isomer in 102Sn revisited: Neutron and proton effective charges close to the double shell closure, In: Physics Letters B Elsevier

    In a high-energy fragmentation experiment at GSI an I=π(6+) isomer and its γ-decay are identified in 102Sn, the two-neutron neighbour of the doubly-magic 100Sn. Its half-life is measured to be T=1/2367(11) ns. The possible existence of further isomers is discussed in the framework of large-scale shell model (LSSM) calculations including up to five particle-hole excitations of the 100Sn core. From the precise B(E2; 6+→4+) strength and the recently remeasured value for B(E2; 8+→6+) in the two-proton hole neighbour 98Cd effective E2 polarization charges for protons and neutrons were inferred including LSSM corrections within the full N=4 0ħω space. The results are discussed in comparison to predicted and empirically determined effective operators.

    X Y Watanabe, PHILIP MALZARD WALKER, Y Hirayama, M Mukai, H Watanabe, G.J. Lane, M. Ahmed, MATTHEW HENRY BRUNET, T Hashimoto, S Ishizawa, S Kimura, F. G. Kondev, Yu. A. Litvinov, H Miyatake, J Y Moon, T Niwase, M. Oyaizu, J. H. Park, ZSOLT PODOLYAK, M Rosenbusch, P Schury, M Wada (2021)First direct observation of isomeric decay in neutron-rich odd-odd 186Ta, In: Physical Review C104024330 American Physical Society

    De-excitation γ rays associated with an isomeric state of 186 Ta were investigated. The isomers were produced in multinucleon transfer reactions between a 136 Xe beam and a natural W target, and were collected and separated by the KEK Isotope Separation System. Two γ transitions with energies of 161.1(2) and 186.8(1) keV associated with an isomeric decay were observed for the first time. The half-life of the isomeric state of the neutral atom 186m Ta was deduced as 17(2) s. Based on the comparison with the previous measurements of the isomeric state using the ESR storage ring at GSI Darmstadt and the coupling of angular momenta of individual particle orbitals in odd-odd nuclei, a decay scheme of 186m Ta was proposed.

    X. Liu, B Cederwall, C Qi, R. A. Wyss, O. Aktas, A. Ertoprak, W. Zhang, E Clement, G De France, D Ralet, A Gadea, A. Goasduff, G Jaworski, I. Kuti, B. M. Nyako, J. Nyberg, M Palacz, B Wadsworth, J.J. Valiente-Dóbon, H. Al-Azri., A. Atac Nyberg, T. Back, G de Angelis, M Doncel, J. Dudouet, A. Gottardo, M. Jurado, J. Ljungvall, D Mengoni, D. R. Napoli, C. M. Petrache, D Sohler, J Timar, D. Barrientos, P Bednarczyk, G Benzoni, B Birkenbach, A. J. Boston, H. C. Boston, I. Burrows, L Charles, M. Ciemala, F. C. L. Crespi, D.M. Cullen, P Desesquelles, C Domingo-Pardo, J Eberth, N. Erduran, S Ertürk, V. Gonzalez, J. Goupil, H Hess, T. Huyuk, A Jungclaus, W. Korten, A Lemasson, S Leoni, A Maj, R Menegazzo, B Million, R. M. Perez-Vidal, A Pullia, ZSOLT PODOLYAK, F Recchia, P Reiter, F Saillant, M. D. Salsac, E Sanchis, J. Simpson, O. Stezowski, C Theisen, M. Zielinska (2021)Evidence for enhanced neutron-proton correlations from the level structure of the N = Z + 1 nucleus 87 43 Tc 44, In: Physical review C104L021302 American Physical Society.

    The low-lying excited states in the neutron-deficient N = Z + 1 nucleus 87 43 Tc 44 have been studied via the fusion-evaporation reaction 54 Fe(36 Ar, 2n1p) 87 Tc at Grand Accélérateur National d'Ions Lourds (GANIL), France. The AGATA spectrometer was used in conjution with the auxiliary NEDA, Neutron Wall, and DIAMANT detector arrays to measure coincident prompt γ-rays, neutrons , and charged particles emitted in the reactions. A level scheme of 87 Tc from the (9/2 + g.s.) state to the (33/2 + 1) state was established based on 6 mutually coincident γ-ray transitions. The constructed level structure exhibits a rotational behavior with a sharp backbending at ω ≈ 0.50 MeV. A decrease in alignment frequency and increase in alignment sharpness in the odd-mass isotonic chains around N = 43 is proposed as an effect of the enhanced isoscalar neutron-proton interactions in odd-mass nuclei when approaching the N = Z line.

    D Bucurescu, Z Podolyak, C Rusu, G de Angelis, YH Zhang, G Cata-Danil, I Cata-Danil, M Ivascu, N Marginean, R Marginean, LC Mihailescu, GA Suliman, PH Regan, W Gelletly, SD Langdown, JJV Dobon, D Bazzacco, S Lunardi, CA Ur, M Axiotis, A Gadea, E Farnea, M Ionescu-Bujor, A Iordachescu, T Kroll, T Martinez, PG Bizzetti, R Broda, NH Medina, B Quintana, B Rubio (2005)High-spin states in the nuclei Y-91 and Nb-95, In: PHYSICAL REVIEW C71(3)ARTN 0pp. ?-? AMERICAN PHYSICAL SOC
    N Paul, A Corsi, A Obertelli, P Doornenbal, G Authelet, H Baba, B Bally, M Bender, D Calvet, F Chateau, S Chen, J-P Delaroche, A Delbart, J-M Gheller, A Giganon, A Gillibert, M Girod, P-H Heenen, V Lapoux, J Libert, T Motobayashi, M Niikura, T Otsuka, TR Rodrıguez, J-Y Rousse, H Sakurai, C Santamaria, N Shimizu, D Steppenbeck, R Taniuchi, T Togashi, Y Tsunoda, T Uesaka, T Ando, T Arici, A Blazhev, F Browne, AM Bruce, R Carroll, LX Chung, ML Cortes, M Dewald, B Ding, F Flavigny, S Franchoo, M Gorska, A Gottardo, A Jungclaus, J Lee, M Lettmann, BD Linh, J Liu, Z Liu, C Lizarazo, S Momiyama, K Moschner, S Nagamine, N Nakatsuka, C Nita, CR Nobs, L Olivier, Z Patel, Zsolt Podolyak, Matthias Rudigier, T Saito, Callum Shand, P-A Soderstrom, I Stefan, R Orlandi, V Vaquero, V Werner, K Wimmer, Z Xu (2017)Are there signatures of harmonic oscillator shells far from stability? - First spectroscopy of 110Zr, In: Physical Review Letters118(3)032501 American Physical Society

    The first measurement of the low-lying states of the neutron-rich 110 Zr and 112 Mo was performed via in-beam γ -ray spectroscopy after one proton removal on hydrogen at ∼ 200     MeV / nucleon . The 2 + 1 excitation energies were found at 185(11) keV in 110 Zr , and 235(7) keV in 112 Mo , while the R 42 = E ( 4 + 1 ) / E ( 2 + 1 ) ratios are 3.1(2), close to the rigid rotor value, and 2.7(1), respectively. These results are compared to modern energy density functional based configuration mixing models using Gogny and Skyrme effective interactions. We conclude that first levels of 110 Zr exhibit a rotational behavior, in agreement with previous observations of lighter zirconium isotopes as well as with the most advanced Monte Carlo shell model predictions. The data, therefore, do not support a harmonic oscillator shell stabilization scenario at Z = 40 and N = 70 . The present data also invalidate predictions for a tetrahedral ground state symmetry in 110 Zr .

    L Caceres, M Gorska, A Jungclaus, M Pfutzner, H Grawe, F Nowacki, K Sieja, S Pietri, D Rudolph, Z Podolyak, PH Regan, E Werner-Malento, P Detistov, S Lalkovski, V Modamio, J Walker, K Andgren, P Bednarczyk, J Benlliure, G Benzoni, AM Bruce, E Casarejos, B Cederwall, FCL Crespi, P Doornenbal, H Geissel, J Gerl, J Grebosz, B Hadinia, M Hellstrom, R Hoischen, G Ilie, A Khaplanov, M Kmiecik, I Kojouharov, R Kumar, N Kurz, A Maj, S Mandal, F Montes, G Martinez-Pinedo, S Myalski, W Prokopowicz, H Schaffner, GS Simpson, SJ Steer, S Tashenov, O Wieland, HJ Wollersheim (2009)Spherical proton-neutron structure of isomeric states in Cd-128, In: PHYSICAL REVIEW C79(1)ARTN 0pp. ?-? AMER PHYSICAL SOC
    Z Podolyak, KA Gladnishki, J Gerl, M Hellstrom, Y Kopatch, S Mandal, M Gorska, PH Regan, HJ Wollersheim, KH Schmidt, O Yordanov, A Bracco, CA Kalfas (2004)Angular momentum population in projectile fragmentation, In: LABYRINTH IN NUCLEAR STRUCTURE701pp. 280-284
    S Myalski, A Maj, Z Podolyak, M Kmiecik, P Bednarczyk, J Grebosz, PH Regan, AB Garnsworthy, S Pietri, D Rudolph, SJ Steer, F Becker, J Gerl, M Gorska, H Grawe, I Kojouharov, H Schaffner, HJ Wollersheim, W Prokopowicz, G Benzoni, B Blank, C Brandau, AM Bruce, L Caceres, F Camera, WN Catford, IJ Cullen, Z Dombradi, P Doornenbal, E Estevez, H Geissel, W Gelletly, A Heinz, R Hoischen, G Ilie, GA Jones, A Jungclaus, A Kelic, FG Kondev, T Kurtukian-Nieto, N Kurz, S Lalkovski, Z Liu, F Montes, M Pfuetzner, T Saito, T Shizuma, AJ Simons, S Schwertel, S Tachenov, PM Walker, E Werner-Malento, O Wieland (2012)STUDY OF ISOMER PRODUCTION RATES FOR A=142-152 AND Z=62-67 IN FRAGMENTATION OF A RELATIVISTIC Pb-208 BEAM, In: ACTA PHYSICA POLONICA B43(2)pp. 253-259 WYDAWNICTWO UNIWERSYTETU JAGIELLONSKIEGO
    E Farnea, F Recchia, D Bazzacco, T Kroell, Z Podolyak, B Quintana, A Gadea (2010)Conceptual design and Monte Carlo simulations of the AGATA array, In: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT621(1-3)pp. 331-343 ELSEVIER SCIENCE BV
    N Alkhomashi, PH Regan, Z Podolyák, S Pietri, AB Garnsworthy, SJ Steer, J Benlliure, E Caserejos, RF Casten, J Gerl, HJ Wollersheim, J Grebosz, G Farrelly, M Górska, I Kojouharov, H Schaffner, A Algora, G Benzoni, A Blazhev, P Boutachkov, AM Bruce, AMD Bacelar, IJ Cullen, L Cáceres, P Doornenbal, ME Estevez, Y Fujita, W Gelletly, R Hoischen, R Kumar, N Kurz, S Lalkovski, Z Liu, C Mihai, F Molina, AI Morales, D Mücher, W Prokopowicz, B Rubio, Y Shi, A Tamii, S Tashenov, JJ Valiente-Dobón, PM Walker, PJ Woods, FR Xu (2009)β - Dcopy of neutron-rich tantalum nuclei: Shape evolution in neutron-rich tungsten isotopes, In: Physical Review C - Nuclear Physics80(6)064308pp. 1-12
    T Kutsarova, EA Stefanova, A Minkova, S Lalkovski, A Korichi, A Lopez-Martens, F Hannachi, H Hübel, A Görgen, A Jansen, G Schönwasser, TL Khoo, B Herskind, M Bergström, D Bazzacco, Z Podolyák (2009)High-spin level scheme of Pb194, In: Physical Review C - Nuclear Physics79(1)
    D Sohler, M Stanoiu, Z Dombradi, F Azaiez, B A Brown, M G Saint-Laurent, O Sorlin, Y E Penionzhkevich, N L Achouri, J C Angelique, M Belleguic, C Borcea, C Bourgeois, J M Daugas, F De Oliveira-Santos, Z Dlouhy, C Donzaud, J Duprat, Z Elekes, S Grevy, D Guillemaud-Mueller, F Ibrahim, S Leenhardt, M Lewitowicz, M J Lopez-Jimenez, S M Lukyanov, W Mittig, J Mrazek, F Negoita, Z Podolyak, M G Porquet, F Pougheon, P Roussel-Chomaz, H Savajols, G Sletten, Y Sobolev, C Stodel, J Timar (2008)In-Beam Gamma-Ray Spectroscopy of the Neutron-Rich Nitrogen Isotopes N19-22, In: Physical Review C77(4)

    The structure of N19-22 nuclei was investigated by means of in-beam gamma-ray spectroscopic technique using fragmentation reactions of both stable and radioactive beams. Based on particle-gamma and particle-gamma gamma coincidence data, level schemes are constructed for the neutron-rich nitrogen nuclei. The experimental results are compared with shell model calculations. The strength of the N=14 and Z=8 shell closures and the weakening of the shell model interaction WBT are discussed.

    A Vogt, B Birkenbach, P Reiter, M Siciliano, K Hadynska-Klek, JJ Valiente-Dobón, C Wheldon, E Teruya, N Yoshinaga, K Arnswald, D Bazzacco, A Blazhev, M Bowry, A Bracco, B Bruyneel, RS Chakrawarthy, R Chapman, D Cline, L Corradi, FCL Crespi, Zsolt Podolyak (2017)Isomers and high-spin structures in the N=81 isotones 135Xe and 137Ba, In: Physical Review C: Nuclear Physics95024316pp. 024316-1 American Physical Society

    The high-spin structures of the N = 81 isotones 135Xe and 137Ba are investigated after multinucleontransfer (MNT) and fusion-evaporation reactions. Both nuclei are populated in (i) 136Xe+238U and (ii) 136Xe+208Pb MNT reactions employing the high-resolution Advanced Gamma Tracking Array (AGATA) coupled to the magnetic spectrometer PRISMA, (iii), in the 136Xe+198Pt MNT reaction employing the -ray array GAMMASPHERE in combination with the gas detector array Chico, and (iv) via a 11B+130Te fusion-evaporation reaction. The high-spin level schemes of 135Xe and 137Ba are considerably extended to higher energies. The 2058-keV (19=2 ) state in 135Xe is identified as an isomer, completing the systematics for the N = 81 isotones. Its half-life is measured to be 8.6(10) ns, corresponding to a transition probability of B(E2; 19=2 ! 15=2 ) = 0:539(69) W.u. Latest shell model calculations considering 132Sn as a closed core reproduce the experimental findings and provide guidance to the interpretation of the new levels. The experimentally deduced reduced quadrupole transition probabilities of the isomeric states are compared to shell-model predictions.

    MW Reed, PM Walker, IJ Cullen, YA Litvinov, D Shubina, GD Dracoulis, K Blaum, F Bosch, C Brandau, JJ Carroll, DM Cullen, AY Deo, B Detwiler, C Dimopoulou, GX Dong, F Farinon, H Geissel, E Haettner, M Heil, RS Kempley, R Knoebel, C Kozhuharov, J Kurcewicz, N Kuzminchuk, S Litvinov, Z Liu, R Mao, C Nociforo, F Nolden, WR Plass, Z Podolyak, A Prochazka, C Scheidenberger, M Steck, T Stoehlker, B Sun, TPD Swan, G Trees, H Weick, N Winckler, M Winkler, PJ Woods, FR Xu, T Yamaguchi (2012)Long-lived isomers in neutron-rich Z=72-76 nuclides, In: PHYSICAL REVIEW C86(5)ARTN 0pp. ?-? AMER PHYSICAL SOC

    A study of neutron-rich isotopes in the A=185 region of the nuclear chart has uncovered long-lived (>1s) isomers in several isotopes of hafnium, tantalum, tungsten, rhenium, and osmium. The region was accessed via the use of projectile fragmentation with the UNILAC-SIS accelerators at GSI. Fragmentation products of 197Au were passed through the fragment separator (FRS) and injected into the experimental storage ring (ESR), where single-ion identifications could be made. Evidence is presented for isomers in 183184 186Hf, 186187Ta,186W, 190192 194Re, and 195Os with excitation energies in the range of 0.13.0 MeV. The lightest of these nuclides have well deformed prolate shapes, while the heaviest are transitional and susceptible to shape changes. Their properties are interpreted with the help of multi-quasiparticle and potential-energy- surface calculations. ©2012 American Physical Society.

    H Watanabe, G Lorusso, S Nishimura, T Otsuka, K Ogawa, ZY Xu, T Sumikama, P-A Soederstroem, P Doornenbal, Z Li, F Browne, G Gey, HS Jung, J Taprogge, Z Vajta, J Wu, A Yagi, H Baba, G Benzoni, KY Chae, FCL Crespi, N Fukuda, R Gernhaeuser, N Inabe, T Isobe, A Jungclaus, D Kameda, GD Kim, YK Kim, I Kojouharov, FG Kondev, T Kubo, N Kurz, YK Kwon, GJ Lane, C-B Moon, A Montaner-Piza, K Moschner, F Naqvi, M Niikura, H Nishibata, D Nishimura, A Odahara, R Orlandi, Z Patel, Z Podolyak, H Sakurai, H Schaffner, GS Simpson, K Steiger, H Suzuki, H Takeda, A Wendt, K Yoshinaga (2014)Monopole-Driven Shell Evolution below the Doubly Magic Nucleus Sn-132 Explored with the Long-Lived Isomer in Pd-126, In: PHYSICAL REVIEW LETTERS113(4)ARTN 04250 AMER PHYSICAL SOC
    S. Lalkovski, E.A. Stefanova, S. Kisyov, A. Korichi, D. Bazzacco, M. Bergstrom, A. Gorgen, B. Herskind, H. Hubel, A. Jansen, T.L. Khoo, T. Kutsarova, A. Lopez-Martens, A. Minkova, Zsolt Podolyak, G. Schonwasser, O. Yordanov (2017)Structure of the neutron mid-shell nuclei 111,11347Ag64,66, In: Physical Review C96 American Physical Society

    111Ag and 113Ag were produced in induced fission reaction, where yrast and near-yrast states were populated. To interpret the new data the Interacting Boson-Fermion model was used. A good agreement with the experimental data is achieved, suggesting that the two Ag nuclei have a well developed collectivity, superimposed on ____pi g9/2-3 excitations previously observed throughout the entire isotopic chain.

    XL Tu, A Kelic-Heil, Y Litvinov, Zsolt Podolyak, YH Zhang, WJ Huang, HS Xu, K Blaum, F Bosch, RJ Chen, Philip Walker (2017)Application of Isochronous Mass Spectrometry for the study of angular momentum population in projectile fragmentation reactions, In: Physical Review C: Nuclear Physics95(1)014610 American Physical Society

    Isochronous mass spectrometry was applied to measure isomeric yield ratios of fragmentation reaction prod- ucts. This approach is complementary to conventional g -ray spectroscopy in particular for measuring yield ratios for long-lived isomeric states. Isomeric yield ratios for the high-spin I = 19=2¯h states in the mirror nuclei 53Fe and 53Co are measured to study angular momentum population following the projectile fragmentation of 78Kr at energies of 480 A MeV on a beryllium target. The 19/2 state isomeric ratios of 53Fe produced from different projectiles in literature have also been extracted as a function of mass number difference between projectile and fragment (mass loss). The results are compared to ABRABLA07 model calculations. The isomeric ratios of 53Fe produced using different projectiles suggest that the theory underestimates not only the previously reported dependence on the spin but also the dependence on the mass loss.

    D. Sohler, M. Stanoiu, Zs. Dombrádi, F. Azaiez, B. A. Brown, M. G. Saint-Laurent, O. Sorlin, Yu.-E. Penionzhkevich, N. L. Achouri, J. C. Angélique, M. Belleguic, C. Borcea, C. Bourgeois, J. M. Daugas, D. De Oliveira-Santos, Z. Dlouhy, C. Donzaud, J. Duprat, Z. Elekes, S. Grévy, D. Guillemaud-Mueller, F. Ibrahim, S. Leenhardt, M. Lewitowicz, M. J. Lopez-Jimenez, S. M. Lukyanov, W. Mittig, J. Mrázek, F. Negoita, Zs. Podolyák, M. G. Porquet, F. Pougheon, P. Roussel-Chomaz, S. Savajols, G. Sletten, Y. Sobolev, C. Stodel, J. Timár (2008)In-beam gamma-ray spectroscopy of the neutron-rich nitrogen isotopes 19-22N, In: Physical Review C77(044303)
    H Watanabe, G Zhang, K Yoshida, Philip Walker, J Liu, J Wu, Patrick Regan, PA Soderstrom, H Kanaoka, Z Korkulu, PS Lee, S Nishimura, A Yagi, DS Ahn, T Alharbi, H Baba, F Browne, AM Bruce, RJ Fukuda, C Griffin, E Ideguchi, N Inabe, T Isobe, S Kanaya, I Kojouharov, FG Kondev, T Kubo, S Kubono, N Kurz, I Kuti, S Lalkovski, GJ Lane;, CS Lee, EJ Lee, G Lorusso, Gavin Lotay, CB Moon, I Nishizuka, CR Nita, A Odahara, Z Patel, VH Phong, Zsolt Podolyak, OJ Roberts, H Sakurai, H Schaffner, Callum Shand, Y Shimizu, T Sumikama, H Suzuki, H Takeda, S Terashima, Z Vajta;, JJ Valiente-Dobon, ZY Xu (2016)Long-lived K isomer and enhanced gamma vibration in the neutron-rich nucleus 172Dy: Collectivity beyond double midshell, In: Physics Letters B760(Sept)pp. 641-646 Elsevier

    The level structure of 172Dy has been investigated for the first time by means of decay spectroscopy following in-flight fission of a 238U beam. A long-lived isomeric state with T1/2 = 0.71(5) s and K π = 8 − has been identified at 1278 keV, which decays to the ground-state and γ-vibrational bands through hindered electromagnetic transitions, as well as to the daughter nucleus 172Ho via allowed β decays. The robust nature of the K π = 8 − isomer and the ground-state rotational band reveals an axially-symmetric structure for this nucleus. Meanwhile, the γ-vibrational levels have been identified at unusually low excitation energy compared to the neighboring well-deformed nuclei, indicating the significance of the microscopic effect on the non-axial collectivity in this doubly mid-shell region. The underlying mechanism of enhanced γ vibration is discussed in comparison with the deformed Quasiparticle Random-Phase Approximation based on a Skyrme energy-density functional.

    L Chen, WR Plaß, H Geissel, R Knöbel, C Kozhuharov, Y Litvinov, Z Patyk, C Scheidenberger, K Siegień-Iwaniuk, B Sun, H Weick, K Beckert, P Beller, F Bosch, D Boutin, L Caceres, JJ Carroll, DM Cullen, IJ Cullen, B Franzke, J Gerl, M Górska, GA Jones, A Kishada, J Kurcewicz, SA Litvinov, Z Liu, S Mandal, F Montes, G Münzenberg, F Nolden, T Ohtsubo, Z Podolyák, R Propri, S Rigby, N Saito, T Saito, M Shindo, M Steck, PM Walker, S Williams, M Winkler, H-J Wollersheim, T Yamaguchi (2012)New results on mass measurements of stored neutron-rich nuclides in the element range from Pt to U with the FRS-ESR facility at 360-400MeV/u, In: Nuclear Physics A882pp. 71-89 Elsevier

    Masses of 238U projectile fragments have been measured with time-resolved Schottky Mass Spectrometry (SMS) at the FRS-ESR facility at GSI. The exotic nuclei were created in the production target at the entrance of the fragment separator FRS, spatially separated in flight and injected into the storage-cooler ring ESR at about 70% light velocity. This means the ions were mainly bare or carried only a few electrons, e.g., the population of Li-like ions was below 1% for Pt fragments. Accurate newmass values of 33 neutron-rich, stored exotic nuclei in the element range from platinum to uranium have been obtained for the first time. In total more than 150 nuclides including references with well-known masses have been covered in this large-area SMS measurement. A novel data analysis has been applied which reduces the systematic errors by taking into account the velocity profile of the cooler electrons and the residual ion-optical dispersion in this part of the storage ring. The experiment, the data analysis, and the mass values are presented. The experimental data are compared with theoretical predictions demonstrating systematic deviations of up to 1500 keV from modern mass models.

    L Atanasova, DL Balabanski, SK Chamoli, M Hass, GS Simpson, D Bazzacco, F Becker, P Bednarczyk, G Benzoni, N Blasi, A Blazhev, A Bracco, C Brandau, L Caceres, F Camera, FCL Crespi, P Detistov, P Doornenbal, C Fahlander, E Farnea, G Georgiev, J Gerl, KA Gladnishki, M Gorska, J Grebosz, R Hoischen, G Ilie, M Ionescu-Bujor, A Iordachescu, A Jungclaus, G Lo Bianco, M Kmiecik, I Kojouharov, N Kurz, S Lakshmi, R Lozeva, A Maj, D Montanari, G Neyens, M Pfuetzner, S Pietri, Z Podolyak, W Prokopowicz, D Rudolph, G Rusev, TR Saito, A Saltarelli, H Schaffner, R Schwengner, S Tashenov, JJ Valiente-Dobon, N Vermeulen, J Walker, E Werner-Malento, O Wieland, HJ Wollersheim, H Grawe, M Hjorth-Jensen (2010)g-factor measurements at RISING: The cases of Sn-127 and Sn-128, In: EPL91(4)ARTN 4pp. ?-? EPL ASSOCIATION, EUROPEAN PHYSICAL SOCIETY

    We report on g-factor measurements of the 19/2+ T1/2=4.5(3) μs isomer in 127Sn and the 10+ T1/2=2.69(23) μs isomer in 128Sn. These isomers were produced and spin-aligned in relativistic heavy-ion fragmentation at GSI and were selected and separated by the GSI fragment separator (FRS). The γ-rays of the isomeric decay were detected by the RISING γ-ray spectrometer. The method of time-differential perturbed angular distributions was utilized. The measured g-factors, g(19/2+; 127Sn)=− 0.17(2) and g(10+; 128Sn)=− 0.20(4), are compared with shell model calculations. The measured g-factors confirm the predominantly νh11/2− 2 and ν(s1/2− 1h11/2−2) character of the 10+ and 19/2− isomers in 128Sn and 127Sn, respectively. The results demonstrate the feasibility of the method for similar measurements in exotic neutron-rich nuclei.

    M Kmiecik, A Maj, J Gerl, G Neyens, L Atanasova, DL Balabanski, F Becker, P Bednarczyk, G Benzoni, N Blasi, A Bracco, S Brambilla, L Caceres, F Camera, M Ciemala, FCL Crespi, SK Chamoli, S Chmel, JM Daugas, P Detistov, P Doornenbal, G Georgiev, K Gladnishki, M Gorska, H Grawe, J Grebosz, M Hass, R Hoischen, G Ilie, M Ionescu-Bujor, J Jolie, I Kojuharov, A Krasznahorkay, R Kulessa, M Lach, S Lakshmi, S Leoni, G Lo Bianco, R Lozeva, KH Maier, S Mallion, K Mazurek, W Meczynski, B Million, D Montanari, S Myalski, C Petrache, M Pfuetzner, S Pietri, Z Podolyak, W Prokopowicz, D Rudolph, N Saito, TR Saito, A Saltarelli, GS Simpson, J Styczen, N Vermeulen, E Werner-Malento, O Wieland, HJ Wollersheim, M Zieblinski (2010)Spin-alignment and g-factor measurement of the I-pi=12(+) isomer in Pb-192 produced in the relativistic-energy fragmentation of a U-238 beam, In: EUROPEAN PHYSICAL JOURNAL A45(2)pp. 153-158 SPRINGER
    G Ilie, G Neyens, GS Simpson, J Jolie, A Blazhev, H Grawe, RL Lozeva, N Vermeulen, L Atanasova, DL Balabanski, F Becker, P Bednarczyk, C Brandau, L Caceres, SK Chamoli, JM Daugas, P Doornenbal, J Gerl, M Gorska, J Grebosz, M Hass, M Ionescu-Bujor, A Jungclaus, M Kmiecik, I Kojouharov, N Kurz, A Maj, S Mallion, O Perru, M Pfuetzner, Z Podolyak, W Prokopowicz, M De Rydt, TR Saito, H Schaffner, K Turzo, J Walker, E Werner-Malento, HJ Wollersheim (2010)g Factor of the 7(-) isomer in Sn-126 and first observation of spin-alignment in relativistic fission, In: PHYSICS LETTERS B687(4-5)pp. 305-309 ELSEVIER SCIENCE BV
    Z Podolyak, PH Regan, PM Walker, M Caamano, K Gladnishki, J Gerl, M Hellstrom, P Mayet, M Pfutzner, M Mineva (2003)Heavy nuclei studied in projectile fragmentation, In: NUCLEAR PHYSICS A722pp. 273C-278C
    EA Stefanova, S Lalkovski, A Korichi, T Kutsarova, A Lopez-Martens, FR Xu, HL Liu, S Kisyov, A Minkova, D Bazzacco, M Bergstrom, A Goergen, F Hannachi, B Herskind, H Huebel, A Jansen, TL Khoo, Z Podolyak, G Schoenwasser (2012)Observation of positive-parity bands in Pd-109 and Pd-111: Enhanced gamma softness, In: PHYSICAL REVIEW C86(4)ARTN 0pp. ?-? AMER PHYSICAL SOC
    BSN Singh, TS Brock, R Wadsworth, H Grawe, P Boutachkov, N Braun, A Blazhev, Z Liu, M Gorska, S Pietri, D Rudolph, C Domingo-Pardo, SJ Steer, A Atac, L Bettermann, L Caceres, T Engert, T Faestermann, F Farinon, F Finke, K Geibel, J Gerl, R Gernhaeuser, N Goel, A Gottardo, J Grebosz, C Hinke, R Hoischen, G Ilie, H Iwasaki, J Jolie, A Kaskas, I Kojouharov, R Kruecken, N Kurz, E Merchan, C Nociforo, J Nyberg, M Pfuetzner, A Prochazka, Z Podolyak, PH Regan, P Reiter, S Rinta-Antila, C Scholl, H Schaffner, P-A Soderstrom, N Warr, H Weick, H-J Wollersheim, PJ Woods, F Nowacki (2012)Influence of the np interaction on the beta decay of Pd-94, In: PHYSICAL REVIEW C86(4)ARTN 0pp. ?-? AMER PHYSICAL SOC
    J-M Regis, J Jolie, N Saed-Samii, N Warr, M Pfeiffer, A Blanc, M Jentschel, U Koester, P Mutti, T Soldner, GS Simpson, F Drouet, A Vancraeyenest, G de France, E Clement, O Stezowski, CA Ur, W Urban, PH Regan, Z Podolyak, C Larijani, C Townsley, R Carroll, E Wilson, LM Fraile, H Mach, V Paziy, B Olaizola, V Vedia, AM Bruce, OJ Roberts, JF Smith, T Kroell, A-L Hartig, A Ignatov, S Ilieva, M Thuerauf, S Lalkovski, D Ivanova, S Kisyov, W Korten, M-D Salsac, M Zielinska, N Marginean, DG Ghita, R Lica, CM Petrache, A Astier, R Leguillon (2014)B(E2; 2(1)(+) -> 0(1)(+)) value in Kr-90, In: PHYSICAL REVIEW C90(6)ARTN 06730 AMER PHYSICAL SOC
    PJR Mason, T Alharbi, PH Regan, N Marginean, Z Podolyak, N Alkhomashi, PC Bender, M Bowry, M Bostan, D Bucurescu, AM Bruce, G Cata-Danil, I Cata-Danil, R Chakrabarti, D Deleanu, P Detistov, MN Erduran, D Filipescu, U Garg, T Glodariu, D Ghita, SS Ghugre, A Kusoglu, R Marginean, C Mihai, M Nakhostin, A Negret, S Pascu, CR Triguero, T Sava, EC Simpson, AK Sinha, L Stroe, G Suliman, NV Zamfir, S Freeman, A Andreyev, A Bruce, A Deacon, D Jenkins, D Joss, D MacGregor, P Regan, J Simpson, G Tungate, B Wadsworth, D Watts (2012)Half-life of the I-pi=4(-) Intruder State in P-34 Using LaBr3:Ce Fast Timing, In: RUTHERFORD CENTENNIAL CONFERENCE ON NUCLEAR PHYSICS381ARTN 0pp. ?-? IOP PUBLISHING LTD
    P.-A. Söderström, Philip Walker, J. Wu, H. L. Liu, Patrick Regan, H. Watanabe, P. Doornenbal, Z. Korkulu, P. Lee, J. J. Liu, G. Lorusso, S. Nishimura, V. H. Phong, T. Sumikama, F. R. Xu, A. Yagi, G. X. Zhang, D. S. Ahn, T. Alharbi, H. Baba, F. Browne, A. M. Bruce, R. J. Carroll, K. Y. Chae, Zs. Dombradi, A. Estrade, N. Fukuda, C. Griffin, E. Ideguchi, N Inabe, T. Isobe, H. Kanaoka, S. Kanaya, I. Kojouharov, F. G. Kondev, T. Kubo, S. Kubono, N. Kurz, I. Kuti, S. Lalkovski, G. J. Lane, E. J. Lee, C. S. Lee, GAVIN JAMES LOTAY, C.-B. Moon, I. Nishizuka, C. R. Nita, A. Odahara, Z. Patel, Zsolt Podolyak, O. J. Roberts, H. Sakurai, H. Schaffner, C. M. Shand, H. Suzuki, H. Takeda, S. Terashima, Zs. Vajta, J. J. Valiente-Dòbon, Z. Y. Xui (2016)Collective And Single-particle Structures In The Neutron-rich Doubly Mid-shell Nucleus 170Dy, In: Proceedings of Science: The 26th International Nuclear Physics Conference

    One of the most successful descriptions of the structure of atomic nuclei is the spherical shell model. It, however, becomes impractical when moving away from closed-shell nuclei. Instead, it is the interplay between the macroscopic shape degrees of freedom and the microscopic nature of the underlying single-particle structure in a deformed basis that determines the nuclear structure. Being the heaviest nucleus precisely in the middle of, known, closed proton and neutron shells, 170Dy has become a central calibration point for tests of collective models of nuclear physics. However, besides one candidate transition from a previous experiment in Legnaro, Italy, no experimental information is available for this nucleus. Using the EURICA setup at RIKEN, which couples the worlds highest intensity in-flight fission facility with a high-efficiency HPGe array, an experiment in November 2014 produced 170Dy nuclei by in-flight fission of a 238U beam. The results from this experiment provide a wealth of information on this elusive nucleus, including the evolution of quadrupole collectivity, rigidity and higher order deformations, as well as the long sought for isomeric K = 6+ state, predicted to be exceptionally pure at mid-shell. These results provide us with a rich level scheme for discussing both single-particle and collective structures at mid-shell.

    P-A Soederstoerm, G Lorusso, H Watanabe, S Nishimura, P Doornenbal, G Thiamova, F Browne, G Gey, HS Jung, T Sumikama, J Taprogge, Z Vajta, J Wu, ZY Xu, H Baba, G Benzoni, KY Chae, FCL Crespi, N Fukuda, R Gernhaeuser, N Inabe, T Isobe, A Jungclaus, D Kameda, GD Kim, Y-K Kim, I Kojouharov, FG Kondev, T Kubo, N Kurz, YK Kwon, GJ Lane, Z Li, A Montaner-Piza, K Moschner, F Naqvi, M Niikura, H Nishibata, A Odahara, R Orlandi, Z Patel, Z Podolyak, H Sakurai, H Schaffner, GS Simpson, K Steiger, H Suzuki, H Takeda, A Wendt, A Yagi, K Yoshinaga (2013)Shape evolution in Ru-116,Ru-118: Triaxiality and transition between the O(6) and U(5) dynamical symmetries, In: PHYSICAL REVIEW C88(2)ARTN 0pp. ?-? AMER PHYSICAL SOC
    E Wilson, Z Podolyak, B Fornal, RVF Janssens, M Bowry, M Bunce, MP Carpenter, CJ Chiara, N Cieplicka, AY Deo, GD Dracoulis, H Grawe, CR Hoffman, RS Kempley, FG Kondev, GJ Lane, T Lauritsen, MW Reed, PH Regan, CR Triguero, B Szpak, PM Walker, S Zhu, S Lunardi, PG Bizzeti, S Kabana, C Bucci, M Chiari, A Dainese, P DiNezza, R Menegazzo, A Nannini, C Signorini, JJ ValienteDobon (2014)Study of (TI126)-T-207 Produced in Deep-Inelastic Reactions, In: INPC 2013 - INTERNATIONAL NUCLEAR PHYSICS CONFERENCE, VOL. 166ARTN 0pp. ?-? E D P SCIENCES
    J.-M. Régis, J. Jolie, N. Saed-Samii, N. Warr, M. Pfeiffer, A. Blanc, M. Jentschel, U. Köster, P. Mutti, T. Soldner, G. S. Simpson, F. Drouet, A. Vancraeyenest, G. de France, E. Clément, O. Stezowski, C. A. Ur, W. Urban, Patrick Regan, Zsolt Podolyak, Cyrus Kouroush Larijani, C. Townsley, R. Carroll, E. Wilson, L. M. Fraile, H. Mach, V. Paziy, B. Olaizola, V. Vedia, A. M. Bruce, O. J. Roberts, J. F. Smith, M. Scheck, T. Kröll, A.-L. Hartig, A. Ignatov, S. Ilieva, S. Lalkovski, W. Korten, N. Mărginean, T. Otsuka, N. Shimizu, T. Togashi, Y. Tsunoda (2017)Abrupt shape transition at neutron number N=60 : B(E2) values in Sr94,96,98 from fast γ−γ timing, In: Physical Review C95(5)054319pp. 054319-1 American Physical Society

    Lifetimes of low-lying yrast states in neutron-rich 94,96,98Sr have been measured by Germanium-gated γ−γ fast timing with LaBr3(Ce) detectors using the EXILL&FATIMA spectrometer at the Institut Laue-Langevin. Sr fission products were generated using cold-neutron-induced fission of 235U and stopped almost instantaneously within the thick target. The experimental B(E2) values are compared with results of Monte Carlo shell-model calculations made without truncation on the occupation numbers of the orbits spanned by eight proton and eight neutron orbits and show good agreement. Similarly to the Zr isotopes, the abrupt shape transition in the Sr isotopes near neutron number N=60 is identified as being caused by many-proton excitations to its g9/2 orbit.

    AY Deo, Z Podolyak, PM Walker, A Algora, B Rubio, J Agramunt, LM Fraile, N Al-Dahan, N Alkhomashi, JA Briz, E Estevez, G Farrelly, W Gelletly, A Herlert, U Koester, A Maira, S Singla (2010)Structures of Po-201 and Rn-205 from EC/beta(+)-decay studies, In: PHYSICAL REVIEW C81(2)ARTN 0pp. ?-? AMER PHYSICAL SOC
    A Gottardo, JJ Valiente-Dobon, G Benzoni, A Gadea, S Lunardi, P Boutachkov, AM Bruce, M Gorska, J Grebosz, S Pietri, Z Podolyak, M Pfuetzner, PH Regan, H Weick, J Alcantara Nunez, A Algora, N Al-Dahan, G de Angelis, Y Ayyad, N Alkhomashi, PRP Allegro, D Bazzacco, J Benlliure, M Bowry, A Bracco, M Bunce, F Camera, E Casarejos, ML Cortes, FCL Crespi, A Corsi, AMD Bacelar, AY Deo, C Domingo-Pardo, M Doncel, Z Dombradi, T Engert, K Eppinger, GF Farrelly, F Farinon, E Farnea, H Geissel, J Gerl, N Goel, E Gregor, T Habermann, R Hoischen, R Janik, PR John, S Klupp, I Kojouharov, N Kurz, SM Lenzi, S Leoni, S Mandal, R Menegazzo, D Mengoni, B Million, V Modamio, AI Morales, DR Napoli, F Naqvi, R Nicolini, C Nociforo, A Prochazka, W Prokopowicz, F Recchia, RV Ribas, MW Reed, D Rudolph, E Sahin, H Schaffner, A Sharma, B Sitar, D Siwal, K Steiger, P Strmen, TPD Swan, I Szarka, CA Ur, PM Walker, O Wieland, H-J Wollersheim, S Lunardi, PG Bizzeti, S Kabana, C Bucci, M Chiari, A Dainese, P DiNezza, R Menegazzo, A Nannini, C Signorini, JJ ValienteDobon (2014)New Isomers in the Neutron-Rich Region Beyond Pb-208, In: INPC 2013 - INTERNATIONAL NUCLEAR PHYSICS CONFERENCE, VOL. 166ARTN 0pp. ?-? E D P SCIENCES
    J Jolie, J-M Regis, D Wilmsen, N Saed-Samii, M Pfeiffer, N Warr, A Blanc, M Jentschel, U Koester, P Mutti, T Soldner, GS Simpson, G De France, W Urban, F Drouet, A Vancraeyenest, AM Bruce, OJ Roberts, LM Fraile, V Paziy, A Ignatov, T Kroell, D Ivanova, S Kisyov, S Lalkovski, Z Podolyak, PH Regan, E Wilson, W Korten, CA Ur, R Lica, N Marginean (2015)Test of the SO(6) selection rule in Pt-196 using cold-neutron capture, In: NUCLEAR PHYSICS A934pp. 1-7 ELSEVIER SCIENCE BV
    P. Koseoglou, V. Werner, N. Pietralla, S. Ilieva, M. Thürauf, C. Bernards, A. Blanc, A. M. Bruce, R. B. Cakirli, N. Cooper, L. M. Fraile, G. de France, M. Jentschel, J. Jolie, U. Koester, W. Korten, T. Kröll, S. Lalkovski, H. Mach, N. Mărginean, P. Mutti, Z. Patel, V. Paziy, Z. Podolyák, P. H. Regan, J.-M. Régis, O. J. Roberts, N. Saed-Samii, G. S. Simpson, T. Soldner, C. A. Ur, W. Urban, D. Wilmsen, E. Wilson (2018)The boundary of the N=90 shape phase transition: 148Ce, In: Journal of Physics: Conference Series1023pp. 012022-1 IOP Publishing

    The even-even N=90 isotones with Z=60-66 are known to undergo a first order phase transition. Such a phase transition in atomic nuclei is characterized by a sudden change of the shape of the nucleus due to changes in the location of the potential minimum. In these proceedings we report a measurement of the B4/2 ratio of 148Ce, which will probe the location of the low-Z boundary of the N=90 phase transitional region. The measured B4/2 value is compared to the prediction from the X(5) symmetry within the interacting boson model at the critical point between the geometrical limits of vibrators and rigid/axial rotors. The EXILL&FATIMA campaign took place at the high-flux reactor of the Institut Laue Langevin, Grenoble, were 235U and 241Pu fission fragments were measured by a hybrid spectrometer consisting of high-resolution HPGe and fast LaBr3(Ce)-scintillator detectors. The fast LaBr3(Ce) detectors in combination with the generalized centroid difference method allowed lifetime measurements in the picosecond region. Furthermore, this kind of analysis can serve as preparation for the FATIMA experiments at FAIR.

    J. N. Wilson, M. Lebois, L. Qi, P. Amador-Celdran, D. Bleuel, J. A. Briz, R. Carroll, Wilton Catford, H. De Witte, D. T. Doherty, R. Eloirdi, G. Georgiev, A. Gottardo, A. Goasduff, K. Hadyńska-Klęk, K. Hauschild, H. Hess, V. Ingeberg, T. Konstantinopoulos, J. Ljungvall, A. Lopez-Martens, G. Lorusso, R. Lozeva, R. Lutter, P. Marini, I. Matea, T. Materna, L. Mathieu, A. Oberstedt, S. Oberstedt, S. Panebianco, Zsolt Podolyak, A. Porta, Patrick Regan, P. Reiter, K. Rezynkina, S. J. Rose, E. Sahin, M. Seidlitz, O. Serot, Robert Shearman, B. Siebeck, S. Siem, A. G. Smith, G. M. Tveten, D. Verney, N. Warr, F. Zeiser, M. Zielinska (2017)Anomalies in the Charge Yields of Fission Fragments from the U(n,f)238 Reaction, In: Physical Review Letters118(22)pp. 222501-1 American Physical Society

    Fast-neutron-induced fission of 238U at an energy just above the fission threshold is studied with a novel technique which involves the coupling of a high-efficiency γ-ray spectrometer (MINIBALL) to an inverse-kinematics neutron source (LICORNE) to extract charge yields of fission fragments via γ−γ coincidence spectroscopy. Experimental data and fission models are compared and found to be in reasonable agreement for many nuclei; however, significant discrepancies of up to 600% are observed, particularly for isotopes of Sn and Mo. This indicates that these models significantly overestimate the standard 1 fission mode and suggests that spherical shell effects in the nascent fission fragments are less important for low-energy fast-neutron-induced fission than for thermal neutron-induced fission. This has consequences for understanding and modeling the fission process, for experimental nuclear structure studies of the most neutron-rich nuclei, for future energy applications (e.g., Generation IV reactors which use fast-neutron spectra), and for the reactor antineutrino anomaly.

    E Grodner, A Gadea, P Sarriguren, SM Lenzi, J Grebosz, JJ Valiente-Dobon, A Algora, M Gorska, PH Regan, D Rudolph, G de Angelis, J Agramunt, N Alkhomashi, LA Susam, D Bazzacco, J Benlliure, G Benzoni, P Boutachkov, A Bracco, L Caceres, RB Cakirli, FCL Crespi, C Domingo-Pardo, M Doncel, Z Dombradi, P Doornenbal, E Farnea, E Ganioglu, W Gelletly, J Gerl, A Gottardo, T Hueyuek, N Kurz, S Leoni, D Mengoni, F Molina, AI Morales, R Orlandi, Y Oktem, RD Page, D Perez, S Pietri, Z Podolyak, A Poves, B Quintana, S Rinta-Antila, B Rubio, BSN Singh, AN Steer, S Verma, R Wadsworth, O Wieland, HJ Wollersheim (2014)Hindered Gamow-Teller Decay to the Odd-Odd N = Z Ga-62: Absence of Proton-Neutron T=0 Condensate in A=62, In: PHYSICAL REVIEW LETTERS113(9)ARTN 09250 AMER PHYSICAL SOC
    M Bowry, Z Podolyak, S Pietri, J Kurcewicz, M Bunce, PH Regan, F Farinon, H Geissel, C Nociforo, A Prochazka, H Weick, N Al-Dahan, N Alkhomashi, PRP Allegro, J Benlliure, G Benzoni, P Boutachkov, AM Bruce, AMD Bacelar, GF Farrelly, J Gerl, M Gorska, A Gottardo, J Grebosz, N Gregor, R Janik, R Knoebel, I Kojouharov, T Kubo, N Kurz, YA Litvinov, E Merchan, I Mukha, F Naqvi, B Pfeiffer, M Pfuetzner, W Plass, M Pomorski, B Riese, MV Ricciardi, K-H Schmidt, H Schaffner, C Scheidenberger, EC Simpson, B Sitar, P Spiller, J Stadlmann, P Strmen, B Sun, I Tanihata, S Terashima, JJV Dobon, JS Winfield, H-J Wollersheim, PJ Woods (2013)Population of high-spin isomeric states following fragmentation of U-238, In: PHYSICAL REVIEW C88(2)ARTN 0pp. ?-? AMER PHYSICAL SOC
    T Alharbi, PJR Mason, PH Regan, N Marginean, Z Podolyak, A Algora, N Alazemi, AM Bruce, R Britton, MR Bunce, D Bucurescu, N Cooper, D Deleanu, D Filipescu, W Gelletly, D Ghita, T Glodariu, G Ilie, S Kisyov, J Lintott, S Lalkovski, S Liddick, C Mihai, K Mulholland, R Marginean, A Negret, M Nakhostin, OJ Roberts, S Rice, JF Smith, L Stroe, T Sava, C Townsley, E Wilson, V Werner, M Zhekova, NV Zamfir, S Freeman, A Andreyev, A Bruce, A Deacon, D Jenkins, D Joss, D MacGregor, P Regan, J Simpson, G Tungate, B Wadsworth, D Watts (2012)Electromagnetic Transition Rate Measurements in the N=80 Isotone, Ce-138, In: RUTHERFORD CENTENNIAL CONFERENCE ON NUCLEAR PHYSICS381ARTN 0pp. ?-? IOP PUBLISHING LTD
    M Nakhostin, Z Podolyak, PH Regan, PM Walker (2010)A digital method for separation and reconstruction of pile-up events in germanium detectors, In: REVIEW OF SCIENTIFIC INSTRUMENTS81(10)ARTN 1pp. ?-? AMER INST PHYSICS
    H Watanabe, T Sumikama, S Nishimura, K Yoshinaga, Z Li, Y Miyashita, K Yamaguchi, H Baba, JS Berryman, N Blasi, A Bracco, F Camera, J Chiba, P Doornenbal, S Go, T Hashimoto, S Hayakawa, C Hinke, E Ideguchi, T Isobe, Y Ito, DG Jenkins, Y Kawada, N Kobayashi, Y Kondo, R Krücken, S Kubono, G Lorusso, T Nakano, M Kurata-Nishimura, A Odahara, HJ Ong, S Ota, Z Podolyák, H Sakurai, H Scheit, Y Shi, K Steiger, D Steppenbeck, K Sugimoto, K Tajiri, S Takano, A Takashima, T Teranishi, Y Wakabayashi, PM Walker, O Wieland, FR Xu, H Yamaguchi (2011)Low-lying level structure of the neutron-rich nucleus 109Nb: A possible oblate-shape isomer, In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics696(3)pp. 186-190 Elsevier
    Laila Gurgi, Patrick Regan, P-A Söderström, H Watanabe, Philip Walker, Zsolt Podolyak, S Nishimura, Thomas Berry, P Doornenbal, G Lorusso, T Isobe, H Baba, ZY Xu, H Sakurai, T Sumikama, Wilton Catford, AM Bruce, F Browne, GJ Lane, FG Kondev, A Odahara, J Wu, HL Liu, FR Xu, Z Korkulu, P Lee, JJ Liu, VH Phong, A Yag, GX Zhang, T Alharbi, RJ Carroll, KY Chae, Zs Dombradi, A Estrade, N Fukuda, C Griffin, E Ideguchi, N Inabe, H Kanaoka, I Kojouharov, T Kubo, S Kubono, N Kurz, I Kuti, S Lalkovski, EJ Lee, CS Lee, Gavin Lotay, C-B Moon, I Nishizuka, CR Nita, Z Patel, OJ Roberts, H Schaffner, Callum Shand, H Suzuki, H Takeda, S Terashima, Zs Vajta, S Yoshida, JJ Valiente-Dòbon (2016)Isomer spectroscopy of neutron-rich 168Tb103, In: Radiation Physics and Chemistry140pp. 493-496 Elsevier

    In-flight fission of a 345 MeV per nucleon 238U primary beam on a 2 mm thick 9Be target has been used to produce and study the decays of a range of neutron-rich nuclei centred around the doubly mid-shell nucleus 170Dy at the RIBF Facility, RIKEN, Japan. The produced secondary fragments of interest were identified eventby- event using the BigRIPS separator. The fragments were implanted into the WAS3ABI position sensitive silicon active stopper which allowed pixelated correlations between implants and their subsequent β-decay. Discrete γ-ray transitions emitted following decays from either metastable states or excited states populated following beta decay were identified using the 84 coaxial high-purity germanium (HPGe) detectors of the EURICA spectrometer, which was complemented by 18 additional cerium-doped lanthanum bromide (LaBr3)

    M Caamano, PM Walker, PH Regan, CJ Pearson, Z Podolyak, P Mayet, J Gerl, C Schlegel, M Hellstrom, M Mineva, M Pfutzner (2001)Isomeric decays in Pt-200, In: ACTA PHYSICA POLONICA B32(3)pp. 763-766
    A Jungclaus, L Caceres, M Gorska, M Pfutzner, S Pietri, E Werner-Malento, H Grawe, K Langanke, G Martinez-Pinedo, F Nowacki, A Poves, JJ Cuenca-Garcia, D Rudolph, Z Podolyak, PH Regan, P Detistov, S Lalkovski, V Modamio, J Walker, P Bednarczyk, P Doornenbal, H Geissel, J Gerl, J Grebosz, I Kojouharov, N Kurz, W Prokopowicz, H Schaffner, HJ Wollersheim, K Andgren, J Benlliure, G Benzoni, AM Bruce, E Casarejos, B Cederwall, FCL Crespi, B Hadinia, M Hellstrom, R Hoischen, G Ilie, J Jolie, A Khaplanov, M Kmiecik, R Kumar, A Maj, S Mandal, F Montes, S Myalski, GS Simpson, SJ Steer, S Tashenov, O Wieland (2007)Observation of isomeric decays in the r-process waiting-point nucleus Cd-130(82), In: PHYSICAL REVIEW LETTERS99(13)ARTN 1pp. ?-? AMER PHYSICAL SOC
    R Wadsworth, BSN Singh, TS Brock, Z Liu, A Gottardo, PJ Woods, H Grawe, P Boutachkov, M Gorska, S Pietri, C Domingo-Pardo, L Caceres, T Engert, F Farinon, J Gerl, N Goel, R Hoischen, I Kojouharov, N Kurz, E Merchan, C Nociforo, A Prochazka, H Schaffner, H Weick, H-J Wollersheim, N Braun, A Blazhev, L Bettermann, F Finke, K Geibel, G Ilie, H Iwasaki, J Jolie, P Reiter, C Scholl, N Warr, D Rudolph, SJ Steer, Z Podolyak, PH Regan, A Atac, A Kaskas, K Eppinger, T Faestermann, R Gernhauser, C Hinke, R Krucken, J Grebosz, J Nyberg, P-A Soderstrom, M Pfutzner, S Rinta-Antila, F Nowacki, K Sieja (2012)Spin-gap isomer in Cd, In: Journal of Physics: Conference Series381(1)

    Evidence has been obtained for the existence of the long predicted 16 spin-gap isomer in Cd. The decay of the isomer was identified and studied following the use of an 850 MeV/u beam of Xe impinging on a Be target and the fragment recoil separator at the GSI Laboratory. Gamma decays from the fragments were detected using the RISING gamma ray array, in its stopped beam configuration, plus a silicon active stopper. The data obtained have been compared with shell model predictions, which indicate that the isoscalar neutron-proton interaction plays a key role in the formation of the isomer. © Published under licence by IOP Publishing Ltd.

    Z Podolyak, S Freeman, A Andreyev, A Bruce, A Deacon, D Jenkins, D Joss, D MacGregor, P Regan, J Simpson, G Tungate, B Wadsworth, D Watts (2012)Prolate-oblate shape transition in heavy neutron-rich nuclei, In: RUTHERFORD CENTENNIAL CONFERENCE ON NUCLEAR PHYSICS381ARTN 0pp. ?-? IOP PUBLISHING LTD
    PH Regan, GA Jones, Z Podolyak, G de Angelis, YH Zhang, A Gadea, CA Ur, M Abdullah, M Axiotis, D Bazzacco, R Broda, D Bucurescu, E Farnea, W Gelletly, M Ionescu-Bujor, A Iordachescu, T Kroell, SD Langdown, S Lenzi, S Lunardi, N Marginean, T Martinez, N Medina, R Menegazzo, DR Napoli, B Quintana, B Rubio, C Rusu, R Schwenger, D Tonev, JJ Valiente-Dobon, W von Oertzen, G Wollel (2006)Nuclear structure and reaction mechanism studies with multinucleon reactions, In: FUSION06: Reaction Mechanisms and Nuclear Structure at the Coulomb Barrier853pp. 271-276
    V. H. Phong, G. Lorusso, T. Davinson, A. Estrade, O. Hall, J. Liu, K. Matsui, F. Montes, S. Nishimura, A. Boso, P. H. Regan, R. Shearman, Z. Y. Xu, J. Agramunt, J. M. Allmond, D. S. Ahn, A. Algora, H. Baba, N. T. Brewer, C. G. Bruno, R. Caballero-Folch, F. Calvino, M. Wolińska-Cichocka, G. Cortes, I. Dillmann, C. Domingo-Pardo, A. Gargano, S. Go, C. J. Griffin, R. K. Grzywacz, L. Harkness-Brennan, T. Isobe, A. Jungclaus, D. Kahl, L. H. Khiem, G. Kiss, A. Korgul, S. Kubono, K. Miernik, A. I. Morales, N. Nepal, M. Piersa, Zs. Podolyak, B. C. Rasco, K. P. Rykaczewski, H. Sakurai, Y. Shimizu, D. W. Stacener, T. Sumikama, H. Suzuki, H. Takeda, J. L. Tain, A. Tarifeño-Saldivia, A. Tolosa-Delgado, V. Vaquero, P. J. Woods, R. Yokoyama, C. Yuan (2019)Observation of a μs isomer in ¹³⁴₄₉In₈₅ : Proton-neutron coupling "southeast" of ¹³²₅₀Sn₈₂, In: Physical Review C100011302(R)pp. 011302-1 American Physical Society

    We report on the observation of a microsecond isomeric state in the single-proton-hole, three-neutron-particle nucleus ¹³⁴In. The nuclei of interest were produced by in-flight fission of a ²³⁸U beam at the Radioactive Isotope Beam Factory at RIKEN. The isomer depopulates through a γ ray of energy 56.7(1) keV and with a half-life of T1/2=3.5(4)μs. Based on the comparison with shell-model calculations, we interpret the isomer as the Iπ=5− member of the π0g−19/2⊗ν1f37/2 multiplet, decaying to the Iπ=7− ground state with a reduced-transition probability of B(E2;5−→7−)=0.53(6)W.u.Observation of this isomer, and lack of evidence in the current work for a Iπ=5− isomer decay in ¹³²In, provides a benchmark of the proton-neutron interaction in the region of the nuclear chart “southeast” of ¹³²Sn, where experimental information on excited states is sparse.

    PG Bizzeti, AM Bizzeti-Sona, M Bini, S Lunardi, D Bazzacco, G de Angelis, E Farnea, R Menegazzo, DR Napoli, CM Petrache, Z Podolyak, CR Alvarez (2002)Sum-up and pile-up contribution to cross-over peaks in coincidence gamma spectroscopy, In: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT481(1-3)PII S0168-pp. 262-283 ELSEVIER SCIENCE BV
    K. Andgren, Zs. Podolyák, A. Dewald, F. R. Xu, A. Algora, M. Axiotis, D. Bazzacco, P. G. Bizzeti, A. M. Bizzeti-Sona, B. Cederwall, G. de Angelis, E. Farnea, A. Fitzler, A. Gadea, W. Gelletly, S. Lunardi, O. HASH(0xa160c18) Möller, N. Marginean, T. Martinez, T. Pissulla, C. Rusu, C. A. Ur, R. VenturellI, P. M. Walker, C. Wheldon (2005)Lifetime measurements of normal deformed states in 71165Lu, In: Physical Review C71(014312)
    M Stanoiu, D Sohler, O Sorlin, F Azaiez, Z Dombradi, BA Brown, M Belleguic, C Borcea, C Bourgeois, Z Dlouhy, Z Elekes, Z Fulop, S Grevy, D Guillemaud-Mueller, F Ibrahim, A Kerek, A Krasznahorkay, M Lewitowicz, SM Lukyanov, S Mandal, J Mrazek, F Negoita, Y-E Penionzhkevich, Z Podolyak, P Roussel-Chomaz, MG Saint-Laurent, H Savajols, G Sletten, J Timar, C Timis, A Yamamoto (2008)Disappearance of the N=14 shell gap in the carbon isotopic chain, In: PHYSICAL REVIEW C78(3)ARTN 0pp. ?-? AMER PHYSICAL SOC

    The structure of C-17-20(6) nuclei was investigated by means of the in-beam gamma-ray spectroscopy technique using fragmentation reactions of radioactive beams. Based on particle-gamma and particle-gamma gamma coincidence data, level schemes are constructed for the neutron-rich C17-20 nuclei. The systematics of the first excited 2(+) states in the carbon isotopes is extended for the first time to A = 20 showing that in contrast to the case of the oxygen isotopes, the N = 14 subshell closure disappears. Experimental results are compared with shell-model calculations. Agreement between them is found only if a reduced neutron-neutron effective interaction is used. Implications of this reduced interaction in some properties of weakly bound neutron-rich Carbon are discussed.

    GA Jones, PH Regan, PM Walker, Z Podolyak, PD Stevenson, MP Carpenter, JJ Carroll, RS Chakrawarthy, P Chowdhury, AB Garnsworthy, RVF Janssens, TL Khoo, FG Kondev, GJ Lane, Z Liu, D Seweryniak, NJ Thompson, S Zhu, SJ Williams (2007)Identification of a high-spin isomer in (99)Mo, In: PHYSICAL REVIEW C76(4)ARTN 0pp. ?-? AMER PHYSICAL SOC
    MB Gómez-Hornillos, V Gorlychev, R Caballero-Folch, F Calvino, G Cortés, C Pretel, J Rissanen, T Eronen, JL Taín, A Algora, J Agramunt, E Valencia, KL Kratz, G Lhersonneau, B Pfeiffer, D Cano-Ott, T Martínez, A García, L Achouri, M Parlog, Z Podolyak (2012)β-delayed neutron emission studies, In: Hyperfine Interactionspp. 1-10

    The study of β-delayed neutron emission plays a major role in different fields such as nuclear technology, nuclear astrophysics and nuclear structure. However the quality of the existing experimental data nowadays is not sufficient for the various technical and scientific applications and new high precision measurements are necessary to improve the data bases. One key aspect to the success of these high precission measurements is the use of a very pure ion beam that ensures that only the ion of interest is produced. The combination of the IGISOL mass separator with the JYFLTRAP Penning trap is an excellent tool for this type of measurement because of the ability to deliver isobarically and even isomerically clean beams. Another key feature of the installation is the non-chemical selectivity of the IGISOL ion source which allows measurements in the important region of refractory elements. This paper summarises the β-delayed neutron emission studies that have been carried out at the IGISOL facility with two different neutron detectors based on He counters in a polyethylene moderator: the Mainz neutron detector and the BEta deLayEd Neutron detector. © 2012 Springer Science+Business Media B.V.

    A-A Zakari-Issoufou, M Fallot, A Porta, A Algora, JL Tain, E Valencia, S Rice, VM Bui, S Cormon, M Estienne, J Agramunt, J Aysto, M Bowry, JA Briz, R Caballero-Folch, D Cano-Ott, A Cucoanes, V-V Elomaa, T Eronen, E Estevez, GF Farrelly, AR Garcia, W Gelletly, MB Gomez-Hornillos, V Gorlychev, J Hakala, A Jokinen, MD Jordan, A Kankainen, P Karvonen, VS Kolhinen, FG Kondev, T Martinez, E Mendoza, F Molina, I Moore, AB Perez-Cerdan, Z Podolyak, H Penttila, PH Regan, M Reponen, J Rissanen, B Rubio, T Shiba, AA Sonzogni, C Weber (2015)Total Absorption Spectroscopy Study of Rb-92 Decay: A Major Contributor to Reactor Antineutrino Spectrum Shape, In: PHYSICAL REVIEW LETTERS115(10)ARTN 10250 AMER PHYSICAL SOC
    W. Korten, A. Atac, D. Beaumel, P. Bednarczyk, M.A Bentley, G. Benzoni, A. Boston, A. Bracco, J. Cederkall, B. Cederwall, M. Ciemala, E. Clement, F .C. L. Crespi, D. Curien, G. de Angelis, F. Didierjean, D.T Doherty, Zs. Dombradi, G. Duchene, J. Dudek, B. Fernandez-Dominguez, B. Fornal, A. Gadea, L. P. Gaffney, J. Gerl, K. Gladnishki, A. Goasduff, M. Gorska, P.T Greenlees, H. Hess, D.G Jenkins, P. R. John, A. Jungclaus, M. Kmiecik, A. Korichi, M. Labiche, S. Leoni, J. Ljungvall, A. Lopez-Martens, A. Maj, D. Mengoni, B. Million, A. Nannini, D. Napoli, P.J Nolan, J. Nyberg, A. Obertelli, J. Pakarinen, N. Pietralla, Zsolt Podolyak, B. Quintana, R. Raabe, G. Rainovski, F. Recchia, P. Reiter, D. Rudolph, J. Simpson, Ch. Theisen, D. Tonev, A. Tumino, J.J Valiente-Dobon, O. Wieland, K. Wimmer, M. Zielinska (2020)Physics opportunities with the Advanced Gamma Tracking Array - AGATA, In: European Physical Journal A56(137) Springer Verlag

    New physics opportunities are opening up by the Advanced Gamma Tracking Array, AGATA,as it evolves to the full 4 instrument. AGATA is a high-resolution -ray spectrometer, solely built from highly segmented high-purity Ge detectors, capable of measuring rays from a few tens of keV to beyond 10 MeV, with unprecedented effciency, excellent position resolution for individual -ray interactions, and very high count-rate capability. As a travelling detector AGATA will be employed at all major current and near-future European research facilities delivering stable and radioactive ion beams.

    S. Saha, T. Arici, J. Gerl, M. Gorska, N. Pietralla, T. Davinson, A.I Morales, Zs. Podolyak (2020)On the B-detection effciency of a combined Si and plastic stack detector for DESPEC, In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipmentpp. 1-18 Elsevier

    A Geant4 simulation has been carried out in order to determine the B-detection efficiency of a rare isotope beam implantation setup, for decay spectroscopy experiments, comprising a number of Double Sided Silicon Strip Detectors (DSSSDs) and two plastic scintillation detectors placed upstream and downstream. The absolute efficiency for the emitted B-particle detection from radioactive fragments implanted in the DSSSDs using fast-timing plastic-scintillator detector, is calculated. The detection efficiency of the setup has been studied with two different distances between the Si layers and plastics. The requirement for the thickness of the Si detector layers and its implication on the B-detection effciency has been investigated for 1 mm and 300 um thickness of Si layers. The combined efficiency of DSSSD and plastic detectors were also simulated for two different thicknesses of the DSSSD.

    RL Lozeva, GS Simpson, H Grawe, G Neyens, LA Atanasova, DL Balabanski, D Bazzacco, F Becker, P Bednarczyk, G Benzoni, N Blasi, A Blazhev, A Bracco, C Brandau, L Caceres, F Camera, SK Chamoli, FCL Crespi, J-M Daugas, P Detistov, M De Rydt, P Doornenbal, C Fahlander, E Farnea, G Georgiev, J Gerl, KA Gladnishki, M Gorska, J Grebosz, M Hass, R Hoischen, G Ilie, M Ionescu-Bujor, A Iordachescu, J Jolie, A Jungclaus, M Kmiecik, I Kojouharov, N Kurz, SP Lakshmi, G Lo Bianco, S Mallion, A Maj, D Montanari, O Perru, M Pfuetzner, S Pietri, JA Pinston, Zsolt Podolyak, W Prokopowicz, D Rudolph, G Rusev, TR Saitoh, A Saltarelli, H Schaffner, R Schwengner, S Tashenov, K Turzo, JJ Valiente-Dobon, N Vermeulen, J Walker, E Werner-Malento, O Wieland, H-J Wollersheim (2008)New sub-mu s isomers in Sn-125,Sn-127,Sn-129 and isomer systematics of Sn124-130, In: PHYSICAL REVIEW C77(6)ARTN 0pp. ?-? AMER PHYSICAL SOC
    C Wheldon, JJ Valiente-Dobon, PH Regan, CJ Pearson, CY Wu, JF Smith, AO Macchiavelli, D Cline, RS Chakrawarthy, R Chapman, M Cromaz, P Fallon, SJ Freeman, A Gorgen, W Gelletly, A Hayes, H Hua, SD Langdown, IY Lee, X Liang, Z Podolyak, G Sletten, R Teng, D Ward, DD Warner, AD Yamamoto (2004)Multi-quasi particle states in W-184 via multi-nucleon transfer, In: EUROPEAN PHYSICAL JOURNAL A20(3)pp. 365-369 SPRINGER
    N Al-Dahan, PH Regan, Z Podolyák, PM Walker, N Alkhomashi, GD Dracoulis, G Farrelly, J Benlliure, SB Pietri, RF Casten, PD Stevenson, W Gelletly, SJ Steer, AB Garnsworthy, E Casarejos, J Gerl, HJ Wollersheim, J Grebosz, M Górska, I Kojouharov, H Schaffner, A Algora, G Benzoni, A Blazhev, P Boutachkov, AM Bruce, IJ Cullen, AM Denis Bacelar, AY Deo, ME Estevez, Y Fujita, R Hoischen, R Kumar, S Lalkovski, Z Liu, PJ Mason, C Mihai, F Molina, D Mücher, B Rubio, A Tamii, S Tashenov, JJ Valiente-Dobón, PJ Woods (2012)Multiple β - Decaying states in 194Re: Shape evolution in neutron-rich osmium isotopes, In: Physical Review C - Nuclear Physics85(3)034301pp. ?-? American Physical Society

    decays from heavy, neutron-rich nuclei with A∼190 have been investigated following their production via the relativistic projectile fragmentation of an E/A=1 GeV 208Pb primary beam on a ∼2.5 g/cm2 9Be target. The reaction products were separated and identified using the GSI FRagment Separator (FRS) and stopped in the RISING active stopper. γ decays were observed and correlated with these secondary ions on an event-by-event basis such that γ-ray transitions following from both internal (isomeric) and β decays were recorded. A number of discrete, β-delayed γ-ray transitions associated with β decays from 194Re to excited states in 194Os have been observed, including previously reported decays from the yrast Iπ=(6+) state. Three previously unreported γ-ray transitions with energies 194, 349, and 554 keV are also identified; these transitions are associated with decays from higher spin states in 194Os. The results of these investigations are compared with theoretical predictions from Nilsson multi-quasiparticle (MQP) calculations. Based on lifetime measurements and the observed feeding pattern to states in 194Os, it is concluded that there are three β−-decaying states in 194Re.

    D Bucurescu, C Rusu, N Marginean, CA Ur, G de Angelis, L Corradi, D Bazzacco, S Beghini, F Della Vedova, G Duchene, E Farnea, T Faul, E Fioretto, A Gadea, W Gelletly, B Guiot, M Ionescu-Bujor, A Iordachescu, SD Landown, SM Lenzi, S Lunardi, P Mason, C Mihai, R Marginean, R Menegazzo, G Montagnoli, D Napoli, Z Podolyak, PH Regan, F Scarlassara, AM Stefanini, G Suliman, S Szilner, M Trotta, JJ Valiente-Dobon, YH Zhang (2007)gamma-ray spectroscopy of the neutron-rich nuclei (89)Rb, (92)Y, and (93)Y with multinucleon transfer reactions, In: PHYSICAL REVIEW C76(6)ARTN 0pp. ?-? AMER PHYSICAL SOC
    M Axiotis, S M Lenzi, N Marginean, D R Napoli, C A Ur, F Brandolini, E Farnea, A Gadea, A Algora, G de Angelis, D Bazzacco, P G Bizzeti, A Bizzeti-Sona, P von Brentano, J A Cameron, A Dewald, H Grawe, C A Kalfas, S Lunardi, T Martinez, C T Papadopoulos, Z Podolyak, C R Alvarez, J Sanchez-Solano, D Tonev, R Vlastou (2007)High-Spin Gamma-Ray Spectroscopy in Mn-52, In: Physical Review C76(1)

    The electromagnetic decay properties of high-spin states in Mn-52 have been studied through various experiments with the GASP and EUROBALL arrays plus the ISIS light charged-particle detector and the Neutron Wall. From gamma-gamma particles coincidence measurements, spins, and parities of these states and branching ratios of their decay gamma rays have been determined. Using the Doppler-shift attenuation method the mean life of some states have been established. These results are compared with large-scale shell-model calculations in the full fp shell.

    D Sohler, M Stanoiu, Z Dombradi, F Azaiez, BA Brown, MG Saint-Laurent, O Sorlin, Y-E Penionzhkevich, NL Achouri, JC Angelique, M Belleguic, C Borcea, C Bourgeois, JM Daugas, F De Oliveira-Santos, Z Dlouhy, C Donzaud, J Duprat, Z Elekes, S Grevy, D Guillemaud-Mueller, F Ibrahim, S Leenhardt, M Lewitowicz, MJ Lopez-Jimenez, SM Lukyanov, W Mittig, J Mrazek, F Negoita, Z Podolyak, MG Porquet, F Pougheon, P Roussel-Chomaz, H Savajols, G Sletten, Y Sobolev, C Stodel, J Timar (2008)In-beam gamma-ray spectroscopy of the neutron-rich nitrogen isotopes (19-22)N, In: PHYSICAL REVIEW C77(4)ARTN 0pp. ?-? AMER PHYSICAL SOC
    Z Patel, Z Podolyak, PM Walker, PH Regan, P-A Söderström, H Watanabe, E Ideguchi, GS Simpson, S Nishimura, F Browne, P Doornenbal, P Lorusso, S Rice, L Sinclair, T Sumikama, J Wu, ZY Xu, N Aoi, H Baba, FL Bello Garrote, G Benzoni, R Daido, Z Dombrádi, Y Fang, N Fukuda, G Gay, S Go, A Gottardo, N Inabe, T Isobe, K Kameda, K Kobayashi, M Kobayashi, T Komatsubara, I Kojouharov, T Kubo, N Kurz, I Kuti, Z Li, HL Liu, M Matsushita, S Michimasa, CB Moon, H Nishibata, I Nishizuka, A Odahara, E Sahin, H Sakurai, H Schaffner, H Suzuki, H Takeda, J Taprogge, Z Vajta, FR Xu, A Yagi, R Yokoyama (2016)β-decay spectroscopy of neutron-rich 160,161,162Sm isotopes, In: EPJ Web of Conferences123 (2

    Neutron-rich 160,161,162Sm isotopes have been populated at the RIBF, RIKEN via β first time. β-coincident γ rays were observed in all three isotopes including γ rays from the isomeric decay of 160Sm and 162Sm. The isomers in 160Sm and 162Sm have previously been observed but have been populated via β decay for the first time. The isomeric state in 162Sm is assigned a configuration based on the decay pattern. The level schemes of 160Sm and 162Sm are presented. The ground states in the parent nuclei 160Pm and 162Pm are both assigned a configuration based on the population of states in the daughter nuclei. Blocked BCS calculations were performed to further investigate the spin-parities of the ground states in 160Pm, 161Pm, and 162Pm, and the isomeric state in 162Sm

    R Caballero-Folch, C Domingo-Pardo, JL Taín, G Cortés, J Agramunt, A Algora, F Ameil, Y Ayyad, J Benlliure, M Bowry, F Calviño, D Cano-Ott, T Davinson, I Dillmann, A Estrade, A Evdokimov, T Faestermann, F Farinon, D Galaviz, A García-Rios, H Geissel, W Gelletly, R Gernhäuser, MB Gómez-Hornillos, C Guerrero, M Heil, C Hinke, R Knöbel, I Kojouharov, J Kurcewicz, N Kurz, Y Litvinov, L Maier, J Marganiec, M Marta, T Martínez, F Montes, I Mukha, DR Napoli, C Nociforo, C Paradela, S Pietri, Z Podolyák, A Prochazka, S Rice, A Riego, B Rubio, H Schaffner, C Scheidenberger, K Smith, E Sokol, K Steiger, B Sun, M Takechi, D Testov, H Weick, E Wilson, JS Winfield, R Wood, P Woods, A Yeremin (2013)β-delayed neutron emission measurements around the third r-process abundance peak, In: AIP Conference Proceedings1541pp. 137-139

    This contribution summarizes an experiment performed at GSI (Germany) in the neutron-rich region beyond N=126. The aim of this measurement is to provide the nuclear physics input of relevance for r-process model calculations, aiming at a better understanding of the third r-process abundance peak. Many exotic nuclei were measured around 211Hg and 215Tl. Final ion identification diagrams are given in this contribution. For most of them, we expect to derive halflives and and β-delayed neutron emission probabilities. The detectors used in this experiment were the Silicon IMplantation and Beta Absorber (SIMBA) detector, based on an array of highly segmented silicon detectors, and the BEta deLayEd Neutron (BELEN) detector, which consisted of 30 3He counters embedded in a polyethylene matrix. © 2013 AIP Publishing LLC.

    D Rudolph, R Hoischen, M Hellstrom, S Pietri, Zsolt Podolyak, PH Regan, AB Garnsworthy, SJ Steer, F Becker, P Bednarczyk, L Caceres, P Doornenbal, J Gerl, M Gorska, J Grebosz, I Kojouharov, N Kurz, W Prokopowicz, H Schaffner, HJ Wollersheim, L-L Andersson, L Atanasova, DL Balabanski, MA Bentley, A Blazhev, C Brandau, JR Brown, C Fahlander, EK Johansson, A Jungclaus, SM Lenzi (2008)Isospin symmetry and proton decay: Identification of the 10(+) isomer in (54)Ni, In: PHYSICAL REVIEW C78(2)ARTN 0pp. ?-? AMER PHYSICAL SOC

    The gamma decays from an isomeric 10(+) state at 6457 keV in the nucleus Ni-54(28)26 have been identified using the GSI fragment separator in conjunction with the RISING Ge-detector array. The state is interpreted as the isobaric analog of the 6527-keV 10(+) isomer in Fe-54(26)28.The results are discussed in terms of isospin-dependent shell-model calculations. Clear evidence is presented for a discrete l = 5 proton decay branch into the first excited 9/2(-) state of the daughter Co-53. This decay is the first of its kind observed following projectile fragmentation reactions.

    Z PODOLYAK, T FENYES, J TIMAR (1995)STRUCTURE OF THE AS-70 NUCLEUS, In: NUCLEAR PHYSICS A584(1)pp. 60-83 ELSEVIER SCIENCE BV
    SJ Steer, ZS PodolyÁk, S Pietri, M GÓrska, GF Farrelly, PH Regan, D Rudolph, AB Garnsworthy, R Hoischen, J Gerl, HJ Wollersheim, H Grawe, KH Maier, F Becker, P Bednarczyk, L CÁceres, P Doornenbal, H Geissel, J Grbosz, A Kelic, I Kojouharov, N Kurz, F Montes, W Prokopowicz, T Saito, H Schaffner, S Tashenov, A Heinz, T Kurtukian-Nieto, G Benzoni, M PfÜtzner, A Jungclaus, DL Balabanski, C Brandau, A Brown, AM Bruce, WN Catford, IJ Cullen, Z DombrÁdi, ME Estevez, W Gelletly, G Ilie, J Jolie, GA Jones, M Kmiecik, FG Kondev, R KrÜcken, S Lalkovski, Z Liu, A Maj, S Myalski, S Schwertel, T Shizuma, PM Walker, E Werner-Malento, O Wieland (2009)Isomeric decay studies in neutron-rich N ≈ 126 nuclei, In: International Journal of Modern Physics E18(4)pp. 1002-1007

    Heavy neutron-rich nuclei were populated via relativistic energy fragmentation of a E/A=1 GeV 208Pb beam. The nuclei of interest were selected and identified by a fragment separator and then implanted in a passive plastic stopper. Delayed rays following internal isomeric decays were detected by the RISING array. Experimental information was obtained on a number of nuclei with Z=73-80 (Ta-Hg), providing new information both on the prolate-oblate transitional region as well as on the N=126 closed shell nuclei.

    Z Podolyak, CM Shand, N Lalovic,, J Gerl, D Rudolph, T Alexander, P Boutachkov, ML Cortes, M Gorska, I Kojouharov, N Kurz, C Louchart, E Merchan, C Michelagnoli, RM Perez-Vidal, S Pietri, D Ralet, M Reese, H Schaffner, C Stahl, H Weick, F Ameil, G de Angelis, T Arici, R Carroll, Z Dombradi, A Gadea, P Golubev, M Lettmann, C Lizarazo, B Birkenbach, B Bruyneel, I Burrows, L Charles, E Clement, FCL Crespi, DM Cullen, P Desesquelles, J Eberth, V Gonzalez, T Habermann, L Harkness-Brennan, H Hess, DS Judson, A Jungclaus, W Korten, M Labiche, A Maj, D Mengoni, DR Napoli, A Pullia, B Quintana, G Rainovski, P Reiter, MD Salsac, E Sanchis, JJ Valiente Dobon (2016)Role of the Δ Resonance in the Population of a Four-Nucleon State in the Fe56→Fe54 Reaction at Relativistic Energies, In: Physical Review Letters117(22)222302 American Physical Society

    The Fe54 nucleus was populated from a Fe56 beam impinging on a Be target with an energy of E/A=500  MeV. The internal decay via γ-ray emission of the 10+ metastable state was observed. As the structure of this isomeric state has to involve at least four unpaired nucleons, it cannot be populated in a simple two-neutron removal reaction from the Fe56 ground state. The isomeric state was produced in the low-momentum (-energy) tail of the parallel momentum (energy) distribution of Fe54, suggesting that it was populated via the decay of the Δ0 resonance into a proton. This process allows the population of four-nucleon states, such as the observed isomer. Therefore, it is concluded that the observation of this 10+ metastable state in Fe54 is a consequence of the quark structure of the nucleons.

    M Nakhostin, Z Podolyak, PH Regan (2014)Digital processing of signals from LaBr3:Ce scintillation detectors, In: JOURNAL OF INSTRUMENTATION9ARTN C1204 IOP PUBLISHING LTD
    E Valencia, A Algora, JL Tain, S Rice, J Agramunt, AA Zakari-Issoufou, A Porta, M Fallot, MD Jordan, F Molina, E Estevez, M Bowry, VM Bui, R Caballero-Folch, D Cano-Ott, V Eloma, T Eronen, A Garcia, MB Gomez-Hornillos, V Gorlychev, J Hakala, A Jokinen, FG Kondev, T Martinez, I Moore, J Rissanen, J Äystö, H Penttilä, A Kankainen, B Rubio, W Gelletly, A Perez, Z Podolyak, PH Regan, GF Farrelly, C Weber, E Mendoza (2013)Total absorption γ-ray spectroscopy of beta delayed neutron emitters, In: AIP Conference Proceedings1541pp. 161-162

    Preliminary results of the data analysis of the beta decay of 94Rb using a novel - segmented- total absorption spectrometer are shown in this contribution. This result is part of a systematic study of important contributors to the decay heat problem in nuclear reactors. In this particular case the goal is to determine the beta intensity distribution below the neutron separation energy and the gamma/beta competition above. © 2013 AIP Publishing LLC.

    S Calinescu, L Caceres, S Grevy, O Sorlin, Z Dombradi, M Stanoiu, R Astabatyan, C Borcea, R Borcea, M Bowry, Wilton Catford, E Clement, S Franchoo, R Garcia, R Gillibert, IH Guerin, I Kuti, S Lukyanov, A Lepailleur, V Maslov, P Morfouace, J Mrazek, F Negoita, M Niikura, L Perrot, Zsolt Podolyak, C Petrone, Y Penionzhkevich, T Roger, F Rotaru, D Sohler, I Stefan, JC Thomas, Z Vajta, E Wilson (2016)Coulomb excitation of Ca-44 and Ar-46, In: PHYSICAL REVIEW C93(4)ARTN 04433 AMER PHYSICAL SOC

    The reduced transition probabilities B(E2; 0+ g.s. → 2+ 1 ) of the 46Ar and 44Ca nuclei were studied using the Coulomb excitation technique at intermediate energy at the LISE/GANIL facility. The in-flight γ rays, emitted after the Coulomb excitation of their first 2+ states, were detected in an array of 64 BaF2 crystals. The present B(E2 ↑) value for 44Ca, 475(36) e2fm4 , agrees well with the value of 495(35) e2fm4 obtained by averaging results of previous experiments. Consistent B(E2; 0+ g.s. → 2+ 1 ) values of 225(29) e2fm4 and 234(19) e2fm4 have been obtained for 46Ar from an absolute and a relative measurement, normalized to the 44Ca value. Both results agree with the ones obtained with the same experimental technique at the NSCL facility but are a factor of 2 smaller than the shell model predictions. The drop in B(E2; 0+ g.s. → 2+ 1 ) in the Ar chain at N = 28, confirmed in this experiment, shows that 46Ar is sensitive to the N = 28 shell closure.

    Z Podolyak, GF Farrelly, PH Regan, AB Garnsworthy, SJ Steer, M Gorska, J Benlliure, E Casarejos, S Pietri, J Gerl, HJ Wollersheim, R Kumar, F Molina, A Algora, N Alkhomashi, G Benzoni, A Blazhev, P Boutachkov, AM Bruce, L Caceres, IJ Cullen, AMD Bacelar, P Doornenbal, ME Estevez, Y Fujita, W Gelletly, H Geissel, H Grawe, J Grebosz, R Hoischen, I Kojouharov, S Lalkovski, Z Liu, KH Maier, C Mihai, D Muecher, B Rubio, H Schaffner, A Tamii, S Tashenov, JJ Valiente-Dobon, PM Walker, PJ Woods (2009)Proton-hole excitation in the closed shell nucleus Au-205, In: PHYSICS LETTERS B672(2)pp. 116-119 ELSEVIER SCIENCE BV
    Natasa Lalovic, Dirk Rudolph, Zsolt Podolyak, Luis Sarmiento, Edward C Simpson, Tom Alexander, Martha Liliana Cortes Sua, Juergen Gerl, Pavel Golubev, Frederic Ameil, Tugba Arici, Christopher Bauer, Dino Bazzacco, Michael A Bentley, Plamen Boutachkov, Michael Bowry, Claes Fahlander, Andres Gadea, Jnaneswari Gellanki, Angel Givechev, Namita Goel, M Gorska, A. Gottardo, Eleonora Gregor, Giulia Guastalla, Tobias Habermann, Mathias Hackstein, A. Jungclaus, Ivan Kojouharov, Rakesh Kumar, Nikolaus Kurz, Marc Lettmann, Cesar Lizarazo, Corinne Louchart-Henning, Edana Merchan, Caterina Michelagnoli, T Moeller, Kevin Moschner, Zena Patel, Norbert Pietralla, Stephane Pietri, Damian Ralet, Michael Reese, Patrick Regan, Peter Reiter, Henning Schaffner, Pushpendra P Singh, Christian Stahl, Robert Stegmann, Olivier Stézowski, Jan Taprogge, P Thoele, Andreas Wendt, Oliver Wieland, Emma Wilson, Rachael Wood, Hans-Juergen Wollersheim, Benedikt Birkenbach, Bart Bruyneel, Ian Burrows, Emmanuel Clement, Pierre Desesquelles, Cesar Domingo-Pardo, Juergen Eberth, Vicente Gonzales Millan, Herbert Hess, Jan Jolie, Daniel Judson, Roberto Menegazzo, Daniele Mengoni, Daniel Napoli, Alberto Pullia, Begona Quintana Arnes, G I Rainovski, Marie-Delphine Salsac, Esteban Sanchis, John Simpson, Jose Javier Valiente Dobón (2018)Study of Isomeric States in 198,200,202,206Pb and 206Hg Populated in Fragmentation Reactions, In: Journal of Physics G: Nuclear and Particle Physics45035105 IOP Publishing

    Isomeric states in isotopes in the vicinity of doubly-magic 208Pb were populated following reactions of a relativistic 208Pb primary beam impinging on a 9Be fragmentation target. Secondary beams of 198;200;202;206Pb and 206Hg were isotopically separated and implanted in a passive stopper positioned in the focal plane of the GSI Fragment Separator. Delayed γ rays were detected with the Advanced GAmma Tracking Array (AGATA). Decay schemes were re-evaluated and interpreted with shell-model calculations. The momentum-dependent population of isomeric states in the two-nucleon hole nuclei 206Pb/206Hg was found to differ from the population of multi neutron-hole isomeric states in 198;200;202Pb.

    J Taprogge, A Jungclaus, H Grawe, S Nishimura, ZY Xu, P Doornenbal, G Lorusso, E Nacher, GS Simpson, P-A Soederstroem, T Sumikama, H Baba, F Browne, N Fukuda, R Gernhauser, G Gey, N Inabe, T Isobe, HS Jung, D Kameda, GD Kim, Y-K Kim, I Kojouharov, T Kubo, N Kurz, YK Kwon, Z Lin, H Sakurai, H Schaffner, K Steiger, H Suzuki, H Takeda, Z Vajta, H Watanabe, J Wu, A Yagi, K Yoshinaga, G Benzoni, S Boenig, KY Chae, L Coraggio, A Covello, J-M Daugas, F Drouet, A Gadea, A Gargano, S Ilieva, FG Kondev, T Kroell, GJ Lane, A Montaner-Piza, K Moschner, D Muecher, F Naqvi, M Niikura, H Nishibata, A Odahara, R Orlandi, Z Patel, Z Podolyak, A Wendt (2014)Identification of a millisecond isomeric state in Cd-129(81) via the detection of internal conversion and Compton electrons, In: PHYSICS LETTERS B738pp. 223-227 ELSEVIER SCIENCE BV
    M Goerska, A Banu, P Bednarczyk, A Bracco, A Buerger, F Camera, E Caurier, P Doornenbal, J Gerl, H Grawe, M Honma, H Huebel, A Jungclaus, A Maj, G Neyens, F Nowacki, T Otsuka, T Pfutzner, S Pietri, Z Podolyak, A Poves, PH Regan, P Reiter, D Rudolph, HJ Wollersheim (2007)Nuclear structure far off stability - Rising campaigns, In: ACTA PHYSICA POLONICA B38(4)pp. 1219-1228
    MA Rizzutto, MN Rao, WA Scale, JRB Oliveira, EW Cybulska, NH Medina, RV Ribas, FR Espinoza-Quiñones, D Bazzacco, F Brandolini, S Lunardi, CM Petrache, Z Podolyák, C Rossi-Alvarez, CA Ur, G De Angelis, DR Napoli, P Spolaore, A Gadea, D De Acuña, M De Poli, E Farnea, D Foltescu, M Ionescu-Bujor, A Iordachescu, A Chatterjee, A Saxena, L Sajo Bohus (2000)The πh11/2⊗νh11/2 yrast band in odd-odd 140Tb, In: Physical Review C - Nuclear Physics62(2)pp. 273021-273024

    The πh11/2⊗νh11/2 yrast band in the odd-odd nucleus 140Tb has been populated by the 92Mo (54Fe, αpn) reaction at 240-MeV incident beam energy. No previous spectroscopic information was known in this nucleus. The present data fit nicely in the systematics of the N= 75 isotones of La, Pr, Pm, Eu, and Tb (Z= 57 to 65).

    G Viesti, V Rizzi, N Cinausero, N Gelli, A Gadea, D Bazzacco, A Algora-Pineda, D Appelbee, G de Angelis, N Belcari, M De Poli, TE Drake, D Fabris, E Farnea, E Fioretto, A Galindo-Uribarri, W Krolas, T Kroll, F Lucarelli, S Lunardi, M Lunardon, T Martinez, R Menegazzo, BK Nayak, G Nebbia, DR Napoli, B Nyako, C Petrache, Z Podolyak, G Prete, CR Alvarez, P Spolaore, C Ur, K Zuber (2001)Observation of a double giant dipole resonance in fusion-evaporation reactions, In: PHYSICAL REVIEW C63(3)ARTN 03461 AMERICAN PHYSICAL SOC
    CR Alvarez, D Vretenar, Z Podolyak, D Bazzacco, G Bonsignori, F Brandolini, S Brant, G deAngelis, M DePoli, M IonescuBujor, Y Li, S Lunardi, NH Medina, CM Petrache (1996)Excited states in Sm-139 described with the interacting boson model plus broken pairs, In: PHYSICAL REVIEW C54(1)pp. 57-71 AMERICAN PHYSICAL SOC
    GA Jones, SJ Williams, PM Walker, Z Podolyak, S Zhu, MP Carpenter, JJ Carroll, RS Chakrawarthy, P Chowdhury, IJ Cullen, GD Dracoulis, AB Garnsworthy, G Hackman, RVF Janssens, TL Khoo, FG Kondev, GJ Lane, Z Liu, D Seweryniak, NJ Thompson (2008)High-spin, multiparticle isomers in (121,123)Sb, In: PHYSICAL REVIEW C77(3)ARTN 0pp. ?-? AMER PHYSICAL SOC
    SJ Steer, Z Podolyak, S Pietri, M Gorska, PH Regan, D Rudolph, E Werner-Malento, AB Garnsworthy, R Hoischen, J Gerl, HJ Wollersheim, KH Maier, H Grawe, F Becker, P Bednarczyk, L Caceres, P Doornenbal, H Geissel, J Greabosz, A Kelic, I Kojouharov, N Kurz, F Montes, W Prokopowicz, T Saito, H Schaffner, S Tashenov, A Heinz, M Pfuetzner, T Kurtukian-Nieto, G Benzoni, A Jungclaus, DL Balabanski, C Brandau, BA Brown, AM Bruce, WN Catford, IJ Cullen, Z Dombradi, ME Estevez, W Gelletly, G Ilie, J Jolie, GA Jones, M Kmiecik, FG Kondev, R Kruecken, S Lalkovski, Z Liu, A Maj, S Myalski, S Schwertel, T Shizuma, PM Walker, O Wieland (2008)Single-particle behavior at N=126: Isomeric decays in neutron-rich Pt-204, In: PHYSICAL REVIEW C78(6)ARTN 0pp. ?-? AMER PHYSICAL SOC
    CM Petrache, Y Sun, D Bazzacco, S Lunardi, CR Alvarez, G Falconi, R Venturelli, G Maron, DR Napoli, Z Podolyak, PM Walker (1997)High-K bands and oblate-prolate coexistence in Nd-134, In: NUCLEAR PHYSICS A617(2)pp. 249-264 ELSEVIER SCIENCE BV
    C Domingo-Pardo, R Caballero-Folch, J Agramuntl, A Algora, A Arcones, F Amei, Y Ayyad, J Benlliure, M Bowry, F Calvino, D Cano-Ott, G Cortes, T Davinson, ID Lmann, A Estrade, A Evdokimov, T Faestermann, F Farinon, D Galaviz, A Garcia-Rios, H Geissel, W Geety, R Gernhaeuser, MB Gomez-Hornillos, C Guerrero, M Heil, C Hinke, R Knoebel, I Kojouharov, J Kurcewicz, N Kurz, Y Litvinov, L Maier, J Marganiec, M Marta, T Martinez, G Martinez-Pinedo, BS Meyer, F Montes, I Mukha, DR Napoli, C Nociforo, C Paradela, S Pietri, Z Podolyak, A Prochazka, S Rice, A Riego, B Rubio, H Schaffner, C Scheidenberger, K Smith, E Sokol, K Steiger, B Sun, JL Tain, M Takechi, D Testov, H Weick, E Wilson, JS Winfield, R Wood, P Woods, A Yeremin (2016)Approaching the precursor nuclei of the third r-process peak with RIBs, In: NUCLEAR PHYSICS IN ASTROPHYSICS VI (NPA6)665
    CM Petrache, D Bazzacco, P Bednarczyk, G de Angelis, M De Poli, C Fahlander, G Falconi, E Farnea, A Gadea, M Lunardon, S Lunardi, N Marginean, R Menegazzo, P Pavan, Z Podolyak, CR Alvarez, CA Ur, R Venturelli, LH Zhu, R Wyss (1997)Rotational quenching of the N=72 shell gap and the role of the nu i(13/2) intruder orbital in Nd-132, In: PHYSICS LETTERS B415(3)pp. 223-230 ELSEVIER SCIENCE BV
    D Sohler, Z Podolyak, J Gulyas, T Fenyes, A Algora, Z Dombradi, S Brant, V Paar (1997)Structure of the As-73 nucleus, In: NUCLEAR PHYSICS A618(1-2)pp. 35-54 ELSEVIER SCIENCE BV
    CM Petrache, Y Sun, D Bazzacco, S Lunardi, CR Alvarez, R Venturelli, D DeAcuna, G Maron, MN Rao, Z Podolyak, JRB Oliveira (1996)Multiple dipole bands at prolate shapes in Nd-136 and their description through the projected shell model, In: PHYSICAL REVIEW C53(6)pp. R2581-R2585 AMERICAN PHYSICAL SOC
    S Lalkovski, AM Bruce, AMD Bacelar, M Gorska, S Pietri, Z Podolyak, P Bednarczyk, L Caceres, E Casarejos, IJ Cullen, P Doornenbal, GF Farrelly, AB Garnsworthy, H Geissel, W Gelletly, J Gerl, J Grebosz, C Hinke, G Ilie, D Ivanova, G Jaworski, S Kisyov, I Kojouharov, N Kurz, N Minkov, S Myalski, M Palacz, P Petkov, W Prokopowicz, PH Regan, H Schaffner, S Steer, S Tashenov, PM Walker, HJ Wollersheim (2013)Submicrosecond isomer in Rh-117(45)72 and the role of triaxiality in its electromagnetic decay rate, In: PHYSICAL REVIEW C88(2)ARTN 0pp. ?-? AMER PHYSICAL SOC
    M. Rudigier, P. M. Walker, R.L. Canavan, Zs. Podolyak, P. H. Regan, P.-A. Söderström, M. Lebois, J.N. Wilson, N. Jovancevic, A. Blazhev, J. Benito, S. Bottoni, M. Brunet, N. Cieplicka-Orynczak, S. Courtin, D. T. Doherty, L.M. Fraile, K. Hadynska-Klek, M. Heine, Ł.W. Iskra, J. Jolie, V. Karayonchev, A. R. Kennington, P. Koseoglou, G. Lotay, G. Lorusso, M. Nakhostin, C.R. Nita, S. Oberstedt, L. Qi, J.-M. Régis, V. Sánchez-Tembleque, R. Shearman, W. Witt, V. Vedia, K.O. Zell (2020)Multi-quasiparticle sub-nanosecond isomers in 178W, In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics801135140 Elsevier

    We report on the first measurement of the half-lives of and four-quasiparticle states in the even-even nucleus 178W. The sub-nanosecond half-lives were measured by applying the centroid shift method to data taken with LaBr3(Ce) scintillator detectors of the NuBall array at the ALTO facility in Orsay, France. The half-lives of these states only became experimentally accessible by the combination of several experimental techniques - scintillator fast timing, isomer spectroscopy with a pulsed beam, and the event-by-event calorimetry information provided by the NuBall array. The measured half-lives are and for the and states, respectively. The decay transitions include weakly hindered E1 and E2 branches directly to the ground-state band, bypassing the two-quasiparticle states. This is the first such observation for an E1 transition. The interpretation of the small hindrance hinges on mixing between the ground-state band and the t-band.

    Z DOMBRADI, Z PODOLYAK, S BRANT, V PAAR (1995)EFFECTIVE PROTON-NEUTRON INTERACTION IN THE SINGLY CLOSED-SHELL REGION, In: PHYSICA SCRIPTAT56pp. 239-242
    S Chen, P Doornenbal, A Obertelli, TR Rodrıguez, G Authelet, H Baba, D Calvet, F Chateau, A Corsi, A Delbart, J-M Gheller, A Giganon, A Gillibert, V Lapoux, T Motobayashi, M Niikura, N Paul, J-Y Rousse, H Sakurai, C Santamaria, D Steppenbeck, R Taniuchi, T Uesaka, T Ando, T Arici, A Blazhev, F Browne, AM Bruce, R Caroll, LX Chung, ML Cortes, M Dewald, B Ding, F Flavigny, S Franchoo, M Gorska, A Gottardo, A Jungclaus, J Lee, M Lettmann, BD Linh, J Liu, Z Liu, C Lizarazo, S Momiyama, K Moschner, S Nagamine, N Nakatsuka, CR Nita, C Nobs, L Olivier, R Orlandi, Z Patel, Zsolt Podolyak, Matthias Rudigier, T Saito, Callum Shand, PA Soderstrom, I Stefan, V Vaquero, V Werner, K Wimmer, Z Xu (2017)First Indication for Shape Transitions in Neutron-rich Selenium Isotopes, In: Physical Review C: Nuclear Physics American Physical Society

    Neutron-rich 88,90,92,94Se isotopes were studied via in-beam γ-ray spectroscopy after production from nucleon removal at intermediate energies at the Radioactive Isotope Beam Factory. γ-γ coincidence analysis allowed to establish level schemes for the first time in these nuclei, including the 2+ 1 → 0 + gs, 4+ 1 → 2 + 1 transitions and their energy ratio R4/2. Low-lying 2+ 2 levels and their branching to the 2+ 1 and 0+ gs states were observed. The experimental results are in good agreement with self-consistent beyond-mean-field calculations based on the Gogny D1S interaction, suggesting ground state shape transition from oblate to prolate then back to oblate between N = 52 − 60 and indicating shape coexistence.

    D Sohler, S Grevy, Z Dombradi, O Sorlin, L Gaudefroy, B Bastin, NL Achouri, JC Angelique, F Azaiez, D Baiborodin, R Borcea, C Bourgeois, A Buta, A Burger, L Caceres, R Chapman, JC Dalouzy, Z Dlouhy, A Drouard, Z Elekes, S Franchoo, S Iacob, I Kuti, B Laurent, M Lazar, X Liang, E Lienard, SM Lukyanov, J Mrazek, L Nalpas, F Negoita, F Nowacki, NA Orr, YE Penionzkhevitch, Z Podolyak, F Pougheon, A Poves, P Roussel-Chomaz, M Stanoiu, I Stefan, MG St-Laurent (2011)Spectroscopy of Si-39.41 and the border of the N=28 island of inversion, In: PHYSICS LETTERS B703(4)pp. 417-421 ELSEVIER SCIENCE BV
    K Nomura, T Otsuka, R Rodriguez-Guzman, LM Robledo, P Sarriguren, PH Regan, PD Stevenson, Z Podolyak (2011)Spectroscopic calculations of the low-lying structure in exotic Os and W isotopes, In: PHYSICAL REVIEW C83(5)ARTN 0pp. ?-? AMER PHYSICAL SOC
    P-A Soderstrom, F Recchia, J Nyberg, A Gadea, SM Lenzi, A Poves, A Atac, S Aydin, D Bazzacco, P Bednarczyk, M Bellato, B Birkenbach, D Bortolato, AJ Boston, HC Boston, B Bruyneel, D Bucurescu, E Calore, B Cederwall, L Charles, J Chavas, S Colosimo, FCL Crespi, DM Cullen, G de Angelis, P Desesquelles, N Dosme, G Duchene, J Eberth, E Farnea, F Filmer, A Gorgen, A Gottardo, J Grebosz, M Gulmini, H Hess, TA Hughes, G Jaworski, J Jolie, P Joshi, DS Judson, A Jungclaus, N Karkour, M Karolak, RS Kempley, A Khaplanov, W Korten, J Ljungvall, S Lunardi, A Maj, G Maron, W Meczynski, R Menegazzo, D Mengoni, C Michelagnoli, P Molini, DR Napoli, PJ Nolan, M Norman, A Obertelli, Z Podolyak, A Pullia, B Quintana, N Redon, PH Regan, P Reiter, AP Robinson, E Sahin, J Simpson, MD Salsac, JF Smith, O Stezowski, C Theisen, D Tonev, C Unsworth, CA Ur, JJ Valiente-Dobon, A Wiens (2012)High-spin structure in K-40, In: PHYSICAL REVIEW C86(5)ARTN 05432 AMER PHYSICAL SOC
    F Browne, AM Bruce, T Sumikama, I Nishizuka, S Nishimura, P Doornenbal, G Lorusso, P-A Soderstrom, H Watanabe, R Daido, Z Patel, S Rice, L Sinclair, J Wu, ZY Xu, A Yagi, H Baba, N Chiga, R Carroll, F Didierjean, Y Fang, N Fukuda, G Gey, E Ideguchi, N Inabe, T Isobe, D Kameda, I Kojouharov, N Kurz, T Kubo, S Lalkovski, Z Li, R Lozeva, N Nishibata, A Odahara, Zsolt Podolyak, Patrick Regan, OJ Roberts, H Sakurai, H Schaffner, GS Simpson, H Suzuki, H Takeda, M Tanaka, J Taprogge, V Werner, O Wieland (2017)K-selection in the decay of the (ν 5 2 [532] ⊗ 3 2 [411])4- isomeric state in 102Zr, In: Physical Review C96(2)024309 American Physical Society

    The (ν 5 2 [532] ⊗ 3 2 [411]) 4− state in 102Zr, populated in the β-decay of 102Y, has been measured to be isomeric with a mean lifetime of 9.5(7) ns. It decays via four transitions, two of which are ∆K = 2 (to the 3+ and 4+ members of the 2+ γ band) and one is ∆K = 4 (to the 4+ member of the ground state 0+ band). The fourth (low-energy) transition is inferred to decay to an as-yet unassigned state. Hindrances of 106 were derived for the ∆K = 2 transitions compared to Weisskopf estimates and the ∆K = 4 transition hindered by a factor of 109 . These values are consistent with the decay pattern of the analogous isomeric state in the neighbouring N = 62 nucleus 100Sr and with the broader systematics of such transitions. A comparison of the hindrances for the ∆K = 4 transitions suggests that 102Zr is hardened against the γ degree of freedom compared to 100Sr.

    Z Podolyak, J Gerl, M Hellstrom, F Becker, KA Gladnishki, M Gorska, A Kelic, Y Kopatch, S Mandal, PH Regan, KH Schmidt, PM Walker, HJ Wollersheim, A Banu, G Benzoni, H Boardman, E Casarejos, J Ekman, H Geissel, H Grawe, D Hohn, I Kojouharov, J Leske, R Lozeva, MN Mineva, G Neyens, RD Page, CJ Pearson, M Portillo, D Rudolph, N Saito, H Schaffner, D Sohler, K Summerer, JJ Valiente-Dobon, C Wheldon, H Weick, M Winkler (2006)High angular momentum states populated in fragmentation reactions, In: PHYSICS LETTERS B632(2-3)pp. 203-206 ELSEVIER SCIENCE BV
    Zsolt Podolyak, B. Cederwall, X. Liu, O. Aktas, A. Ertoprak, W. Zhang, C. Qi, E. Clement, G. de France, D. Ralet, A. Gadea, A. Goasduff, G. Jaworski, I. Kuti, B.M. Nyako, J. Nyberg, M. Palacz, R. Wadsworth, J.J Valiente-Dobon, H. Al-Azri., A. Atac Nyberg, T. Back, G. de. Angelis, M. Doncel, J. Dudouet, A. Gottardo, M. Juardo, J. Ljunvall, D. Mengoni, D.R Napoli, C.M Petrache, D. Sohler, J. Timar, D. Barrientos, P. Bednarczyk, G. Benzoni, B. Birkenbach, A.J Boston, H.C Boston, I. Burrows, L. Charles, M. Ciemala, F.C.L Crespi, D.M Cullen, P. Desesquelles, C. Domingo-Pardo, J. Eberth, N. Erduran, S. Erturk, V. Gonzalez, J. Goupil, H. Hess, T. Huyuk, A. Jungclaus, W. Korten, A. Lemasson, S. Leoni, A. Maj, R. Menegazzo, B. Million, R.M Perez-Vidal, Zsolt Podolyak, A. Pullia, F. Recchia, P. Reiter, F. Saillant, M.D Salsac, E. Sanchis, J. Simpson, O. Stezowski, Ch. Theisen, M. Zielinska (2020)Isospin properties of nuclear pair correlations from the level structure of the self-conjugate nucleus 88Ru, In: Physical Review Society American Physical Society

    The low-lying energy spectrum of the extremely neutron-deficient self-conjugate (N = Z) nuclide 88 44Ru44 has been measured using the combination of the Advanced Gamma Tracking Array (AGATA) spectrometer, the NEDA and Neutron Wall neutron detector arrays, and the DIAMANT charged particle detector array. Excited states in 88Ru were populated via the 54Fe(36Ar; 2n )88Ru fusion-evaporation reaction at the Grand Accelerateur National d'Ions Lourds (GANIL) accelerator complex. The observed -ray cascade is assigned to 88Ru using clean prompt - -2-neutron coincidences in anti-coincidence with the detection of charged particles, conrming and extending the previously assigned sequence of low-lying excited states. It is consistent with a moderately deformed rotating system exhibiting a band crossing at a rotational frequency that is significantly higher than standard theoretical predictions with isovector pairing, as well as observations in neighboring N > Z nuclides. The direct observation of such a ____delayed" rotational alignment in a deformed N = Z nucleus is in agreement with theoretical predictions related to the presence of strong isoscalar neutron-proton pair correlations.

    J Taprogge, A Jungclaus, H Grawe, S Nishimura, P Doornenbal, G Lorusso, GS Simpson, P-A Soederstroem, T Sumikama, ZY Xu, H Baba, F Browne, N Fukuda, R Gernhaeuser, G Gey, N Inabe, T Isobe, HS Jung, D Kameda, GD Kim, Y-K Kim, I Kojouharov, T Kubo, N Kurz, YK Kwon, Z Li, H Sakurai, H Schaffner, K Steiger, H Suzuki, H Takeda, Z Vajta, H Watanabe, J Wu, A Yagi, K Yoshinaga, G Benzoni, S Boenig, KY Chae, L Coraggio, A Covello, J-M Daugas, F Drouet, A Gadea, A Gargano, S Ilieva, FG Kondev, T Kroell, GJ Lane, A Montaner-Piza, K Moschner, D Muecher, F Naqvi, M Niikura, H Nishibata, A Odahara, R Orlandi, Z Patel, Z Podolyak, A Wendt (2014)1p(3/2) Proton-Hole State in Sn-132 and the Shell Structure Along N=82, In: PHYSICAL REVIEW LETTERS112(13)ARTN 13250
    Z Podolyak (2006)The high-resolution in-flight spectroscopy (HISPEC) project at fair, In: INTERNATIONAL JOURNAL OF MODERN PHYSICS E-NUCLEAR PHYSICS15(8)pp. 1967-1977
    AM Bruce, AMD Bacelar, G Benzoni, A Gottardo, R Nicolini, E Sahin, A Gadea, A Algora, M Górska, S Pietri, P Boutachkov, ML Cortés, C Domingo-Prado, F Farinon, H Geissel, J Gerl, N Goel, E Gregor, T Haberman, R Hoischen, I Kojouharov, N Kurz, C Nociforo, A Prochazka, W Prokopowicz, H Schaffner, A Sharma, H Weick, H-J Wollersheim, JJ Valiente-Dobón, D Mengoni, Z Podolyák, N Al-Dahan, N Alkhomashi, M Bowry, M Bunce, AY Deo, GF Farrelly, PH Regan, PM Walker, JA Alcántara-Núñez, Y Ayyad, PRP Allegro, E Casarejos, M Doncel, K Eppinger, S Klupp, K Steiger, J Grȩbosz, D Rudolph, R Janik, B Sitar, P Strmen, I Szarka, S Lunardi, R Menegazzo, S Mandal, D Siwal, F Naqvi, T Pissulla (2012)β decay of Y produced in projectile fission of U, In: Journal of Physics: Conference Series381(1)

    The population of Zr following the β decay of Y produced in the projectile fission of U at the GSI facility in Darmstadt, Germany has been studied. Y is known to decay into Zr via two states, one of high spin and the other low spin. These states preferentially populate different levels in the Zr daughter. In this paper the intensities of transitions in Zr observed are compared with those from the decay of the low-spin level studied at the TRISTAN facility at Brookhaven National Laboratory and of the high-spin level studied at the JOSEF separator at the Kernforschungsanlage Jülich. © Published under licence by IOP Publishing Ltd.

    S Pietri, PH Regan, Z Podolyak, D Rudolph, S Steer, AB Garnsworthy, E Werner-Malento, R Hoischen, M Gorska, J Gerl, HJ Wollersheim, I Kojouharov, H Schaffner, F Becker, P Bednarczyk, L Caceres, P Doornenbal, H Geissel, J Grebosz, A Kelic, N Kurz, F Montes, W Prokopowicz, T Saito, S Tashenov, A Heinz, M Pfuetzner, T Kurtukian-Nieto, G Benzoni, M Hellstrom, A Jungclaus, J Simpson, L-L Andersson, L Atanasova, D Balabanski, MA Bentley, B Blank, A Blazhev, C Brandau, JR Brown, AM Bruce, F Camera, WN Catford, IJ Cullen, Z Dombradi, E Estevez, C Fahlander, W Gelletly, G Ilie, EK Johansson, J Jolie, GA Jones, M Kmiecik, FG Kondev, S Lalkovski, Z Liu, A Maj, S Myalski, T Shizuma, AJ Simons, S Schwertel, PM Walker, O Wieland (2007)Recent results in fragmentation isomer spectroscopy with rising, In: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS261(1-2)pp. 1079-1083
    J Tain, J Agramunt, D Ahn, A Algora, J Allmond, H Baba, S Bae, N Brewer, R Caballero Folch, F Calvino, P Coleman-Smith, G Cortes, T Davinson, I Dillmann, C Domingo-Pardo, A Estrade, N Fukuda, S Go, C Griffin, R Grzywacz, J Ha, O Hall, L Harkness-Brennan, T Isobe, D Kahl, M Karny, G Kiss, M Kogimtzis, A Korgul, S Kubono, M Labiche, I Lazarus, J Lee, J Liu, G Lorusso, K Matsui, K Miernik, F Montes, B Moon, A Morales, N Nepal, S Nishimura, R Page, Zsolt Podolyak, V Pucknell, B Rasco, Patrick Regan, A Riego, B Rubio, K Rykaczewski, Y Saito, H Sakurai, Y Shimizu, J Simpson, P Soderstrom, D Stracener, T Sumikama, R Surman, H Suzuki, M Takechi, H Takeda, A Tarifeno-Saldiva, S Thomas, A Tolosa-Delgado, V Phong, P Woods (2018)The BRIKEN Project: Extensive Measurements of β-delayed Neutron Emitters for the Astrophysical r Process, In: Acta Physica Polonica B49(3)pp. 417-428 Jagiellonian University

    An ambitious program to measure decay properties, primarily β-delayed neutron emission probabilities and half-lives, for a significant number of nuclei near or on the path of the rapid neutron capture process, has been launched at the RIKEN Nishina Center. We give here an overview of the status of the project.

    P Spagnoletti, GS Simpson, R Carroll, J-M Regis, A Blanc, M Jentschel, U Koster, P Mutti, T Soldner, G de France, CA Ur, W Urban, AM Bruce, F Drouet, LM Fraile, LP Gaffney, DG Ghită, S Ilieva, J Jolie, W Korten, T Kroll, C Larijarni, S Lalkovski, R Lica, H Mach, N Marginean, V Paziy, Zsolt Podolyak, Patrick Regan, M Scheck, N Saed-Samii, G Thiamova, C Townsley, A Vancraeyenest, V Vedia, A Gargano, P Van Isacker (2017)Half-life of the 15/2+ state of 135I: A test of E2 seniority relations, In: Physical Review C: Nuclear Physics95021302 American Physical Society

    The half-life of the 15/2+ 1 state of the 3-valence-proton nucleus 135I has been measured to be 1.74(8) ns using the EXILL-FATIMA mixed array of Ge and LaBr3 detectors. The nuclei were produced following the cold neutron-induced fission of a 235U target at the PF1B beam line of the Institut Laue-Langevin. The extracted B(E2; 15/2+ → 11/2+) value enabled a test of seniority relations for the first time between E2 transition rates. Large-scale shell-model calculations were performed for 134Te and 135I, and reinterpreted in a single-orbit approach. The results show that the two-body component of the E2 operator can be large whereas energy shifts due to the three-body component of the effective interaction are small.

    N Abuhadi, D Bradley, D Katarey, Z Podolyak, S Sassi (2014)Investigation of the quantitative accuracy of 3D iterative reconstruction algorithms in comparison to filtered back projection method: a phantom study, In: MEDICAL IMAGING 2014: PHYSICS OF MEDICAL IMAGING9033ARTN 90335 SPIE-INT SOC OPTICAL ENGINEERING
    F Naqvi, M Gorska, L Caceres, A Jungclaus, M Pfuetzner, H Grawe, F Nowacki, K Sieja, S Pietri, E Werner-Malento, PH Regan, D Rudolf, Z Podolyak, J Jolie, K Andgren, T Beck, P Bednarczyk, J Benlliure, G Benzoni, AM Bruce, E Casarejos, B Cederwall, FCL Crespi, P Detistov, Z Dombradi, P Doornenbal, H Geissel, J Gerl, J Grebosz, B Hadinia, M Hellstrom, R Hoischen, G Ilie, A Khaplanov, I Kojouharov, M Kmiecik, N Kurz, S Lalkovski, A Maj, S Mandal, V Modamio, F Montes, S Myalski, W Prokopowicz, P Reiter, H Schaffner, G Simpson, D Sohler, SJ Steer, S Tashenov, J Walker, O Wieland, HJ Wollersheim (2010)Isomer spectroscopy of Cd-127, In: PHYSICAL REVIEW C82(3)ARTN 0pp. ?-? AMER PHYSICAL SOC
    S Mohammadi, Z Podolyák, G De Angelis, M Axiotis, D Bazzacco, PG Bizzeti, F Brandolini, R Broda, D Bucurescu, E Farnea, W Gelletly, A Gadea, M Ionescu-Bujor, A Iordachescu, T Kröll, S Longdown, S Lunardi, N Marginean, T Martinez, NH Medina, B Quintana, PH Regan, B Rubio, CA Ur, JJ Valiente Dobón, PM Walker, YH Zhang (2004)High-spin states populated in deep-inelastic reactions, In: Brazilian Journal of Physics34(3 A)pp. 792-795

    High spin states in the neutron rich 188Os and 190Os nuclei have been populated using the 82Se + 192Os deep-inelastic reaction. The level schemes are extended up to spin I ≈21. The observed new structures are tentatively interpreted as fragments of rotational bands built on multi-quasiparticle configurations.

    D Rudolph, S Pietri, Z Podolyak, PH Regan, AB Garnsworthy, R Hoischen, SJ Steer, F Becker, P Bednarczyk, L Caceres, P Doornenbal, H Geissel, J Gerl, M Gorska, J Grebosz, A Kelic, I Kojouharov, N Kurz, F Montes, W Prokopowicz, T Saito, H Schaffner, S Tashenov, E Werner-Malento, HJ Wollersheim, L-L Andersson, L Atanasova, DL Balabanski, MA Bentley, G Benzoni, B Blank, A Blazhev, C Brandau, JR Brown, AM Bruce, F Camera, WN Catford, IJ Cullen, Z Dombradi, E Estevez, C Fahlander, W Gelletly, A Heinz, M Hellstrom, G Ilie, EK Johansson, J Jolie, GA Jones, A Jungclaus, M Kmiecik, FG Kondev, T Kurtukian-Nieto, S Lalkovski, Z Liu, A Maj, S Myalski, M Pfutzner, T Shizuma, AJ Simons, S Schwertel, PM Walker, O Wieland (2007)Exciting isomers from the first stopped-beam RISING campaign, In: EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS150pp. 173-176
    Z Vajta, M Stanoiu, D Sohler, GR Jansen, F Azaiez, Z Dombradi, O Sorlin, BA Brown, M Belleguic, C Borcea, C Bourgeois, Z Dlouhy, Z Elekes, Z Fueloep, S Grevy, D Guillemaud-Mueller, G Hagen, M Hjorth-Jensen, F Ibrahim, A Kerek, A Krasznahorkay, M Lewitowicz, SM Lukyanov, S Mandal, P Mayet, J Mrazek, F Negoita, Y-E Penionzhkevich, Z Podolyak, P Roussel-Chomaz, MG Saint-Laurent, H Savajols, G Sletten, J Timar, C Timis, A Yamamoto (2014)Excited states in the neutron-rich nucleus F-25, In: PHYSICAL REVIEW C89(5)ARTN 05432 AMER PHYSICAL SOC
    AI Morales, J Benlliure, T Kurtukian-Nieto, K-H Schmidt, S Verma, PH Regan, Z Podolyak, M Gorska, S Pietri, R Kumar, E Casarejos, N Al-Dahan, A Algora, N Alkhomashi, H Alvarez-Pol, G Benzoni, A Blazhev, P Boutachkov, AM Bruce, LS Caceres, IJ Cullen, AMD Bacelar, P Doornenbal, ME Estevez-Aguado, G Farrelly, Y Fujita, AB Garnsworthy, W Gelletly, J Gerl, J Grebosz, R Hoischen, I Kojouharov, N Kurz, S Lalkovski, Z Liu, C Mihai, F Molina, D Muecher, B Rubio, H Shaffner, SJ Steer, A Tamii, S Tashenov, JJ Valiente-Dobon, PM Walker, HJ Wollersheim, PJ Woods (2014)Half-Life Systematics across the N=126 Shell Closure: Role of First-Forbidden Transitions in the beta Decay of Heavy Neutron-Rich Nuclei, In: PHYSICAL REVIEW LETTERS113(2)ARTN 0pp. ?-? AMER PHYSICAL SOC
    S Rice, A Algora, JL Tain, E Valencia, J Agramunt, B Rubio, William Gelletly, Patrick Regan, A-A Zakari-Issoufou, M Fallot, A Porta, J Rissanen, T Eronen, J Äystö, L Batist, M Bowry, VM Bui, R Caballero-Folch, D Cano-Ott, V-V Elomaa, E Estevez, GF Farrelly, AR Garcia, B Gomez-Hornillos, V Gorlychev, J Hakala, MD Jordan, A Jokinen, VS Kolhinen, FG Kondev, T Martínez, P Mason, E Mendoza, I Moore, H Penttilä, Zsolt Podolyak, M Reponen, V Sonnenschein, AA Sonzogni, P Sarriguren (2017)Total absorption spectroscopy study of the β decay of 86Br and 91Rb, In: Physical Review C96(1)014320 American Physical Society

    The beta decays of 86Br and 91Rb have been studied using the total absorption spectroscopy technique. The radioactive nuclei were produced at the Ion Guide Isotope Separator On-Line facility in Jyväskylä and further purified using the JYFLTRAP. 86Br and 91Rb are considered to be major contributors to the decay heat in reactors. In addition, 91Rb was used as a normalization point in direct measurements of mean gamma energies released in the beta decay of fission products by Rudstam et al. assuming that this decay was well known from high-resolution measurements. Our results show that both decays were suffering from the Pandemonium effect and that the results of Rudstam et al. should be renormalized. The relative impact of the studied decays in the prediction of the decay heat and antineutrino spectrum from reactors has been evaluated

    N Marginean, D Bucurescu, C R Alvarez, C A Ur, Y Sun, D Bazzacco, S Lunardi, G de Angelis, M Axiotis, E Farnea, A Gadea, M Ionescu-Bujor, A Iordachescu, W Krolas, T Koll, S M Lenzi, T Martinez, R Menegazzo, D R Napoli, P Pavan, Z Podolyak, M De Poli, B Quintana, P Spolaore (2004)High-Spin Behavior of Multiple Bands in the N = Z+1 Nucleus Zr-81: A Possible Probe of Enhanced Neutron-Proton Correlations, In: Physical Review C69(5)

    A new experimental investigation of the level scheme of the N=Z+1 nucleus Zr-81 is reported. An additional band assigned to the [431]1/2(+) orbital has been observed and the known [422]5/2(+) and [301]3/2(-) bands have been extended to higher spins. The behavior of these bands is compared to that of the bands in the isotonic nucleus Sr-79, for which some new experimental data are presented. Comparison is also made to the even-even N=Z and N=Z+2 neighbors. The band structures are discussed in the framework of the projected shell model.

    S Pietri, PH Regan, Z Podolyak, D Rudolph, M Gorska, A Jungclaus, M Pfuetzner, AB Garnsworthy, SJ Steer, L Caceres, E Werner-Malento, R Hoischen, J Gerl, I Kojouharov, H Schaffner, HJ Wollersheim, F Becker, P Bednarczyk, P Doornenbal, H Geissel, J Grebosz, A Kelic, N Kurz, F Montes, W Prokopowicz, T Saito, S Tashenov, A Heinz, T Kurtukian-Nieto, G Benzoni, M Hellstrom, L-L Andersson, L Atanasova, DL Balabanski, MA Bentley, B Blank, A Blazhev, C Brandau, JR Brown, AM Bruce, F Camera, WN Catford, IJ Cullen, Z Dombradi, E Estevez, C Fahlander, W Gelletly, G Ilie, EK Johansson, J Jolie, GA Jones, M Kmiecik, FG Kondev, S Lalkovski, Z Liu, A Maj, S Myalski, T Shizuma, AJ Simons, S Schwertel, PM Walker, O Wieland (2007)First results from the stopped beam isomer rising campaign at GSI, In: ACTA PHYSICA POLONICA B38(4)pp. 1255-1264
    P Doornenbal, P Reiter, H Grawe, T Otsuka, A Al-Khatib, A Banu, T Beck, F Becker, P Bednarczyk, G Benzoni, A Bracco, A Buerger, L Caceres, F Camera, S Chmel, M Gorska, J Grebosz, H Huebel, M Kavatsyuk, O Kavatsyuk, M Kmiecik, I Kojouharov, N Kurz, R Lozeva, A Maj, S Mandal, W Meczynski, B Million, Z Podolyak, A Richard, N Saito, T Saito, H Schaffner, M Seidlitz, T Striepling, Y Utsuno, J Walker, N Warr, H Weick, O Wieland, M Winkler, HJ Wollersheim (2007)The T=2 mirrors Ca-36 and S-36: A test for isospin symmetry of shell gaps at the driplines, In: PHYSICS LETTERS B647(4)pp. 237-242 ELSEVIER SCIENCE BV
    PH Regan, AB Gamsworthy, SJ Steer, S Pletri, Z Podolyak, D Rudolph, M Gorska, L Caceres, E Wemer-Malento, J Gerl, HJ Wollersheim, F Becker, P Bednarczyk, PD Doornenbal, H Geissel, H Grawe, J Grebosz, R Hoischen, A Kelic, I Kojouharov, N Kurz, F Montes, W Prokopowicz, T Saito, H Schaffner, S Tashenov, A Heinz, M Pfuetzner, T Kurtukian-Nieto, G Benzoni, M Hellstroem, A Jungclaus, L-L Andersson, L Atanasova, DL Balabanski, MA Bentley, B Blank, A Blazhev, C Brandau, J Brown, AM Bruce, F Camera, WN Catford, IJ Cullen, Z Dombradi, E Estevez, C Fahlander, W Gelletly, G Ilie, EK Johansson, J Jolie, GA Jones, M Kmiecik, G Kondev, S Lalkovski, Z Liu, A Maj, S Myalski, S Schwertel, T Shizuma, AJ Simons, PM Walker, O Wieland (2007)First results from the stopped RISING campaign at GSI: The mapping of isomeric decays in highly exotic nuclei, In: Six International Conference of the Balkan Physical Union899pp. 19-22
    MA Najem, NM Spyrou, Z Podolyak, FA Abolaban (2014)The physical characteristics of the 15 MV Varian Clinac 2100C unflattened beam, In: RADIATION PHYSICS AND CHEMISTRY95pp. 205-209 PERGAMON-ELSEVIER SCIENCE LTD
    PJR Mason, Z Podolyak, NM Arginean, PH Regan, T Alexander, A Algora, T Alharbi, M Bowry, R Britton, D Bucurescu, AM Bruce, M Bunce, G Cata-Danil, I Cata-Danil, N Cooper, D Deleanu, D Delion, D Filipescu, W Gelletly, T Glodariu, I Gheorghe, D Ghita, G Ilie, D Ivanova, S Kisyov, S Lalkovski, R Lica, SN Liddick, R Marginean, C Mihai, K Mulholland, A Negret, CR Nita, S Rice, OJ Roberts, T Sava, JF Smith, P-A Soederstroem, PD Stevenson, L Stroe, S Toma, C Townsley, V Werner, E Wilson, RT Wood, NV Zamfir, M Zhekova, T Niksic, M Milin, D Vretenar, S Szilner (2012)Li-7-Induced Reactions for Fast-Timing With LaBr3:Ce Detectors, In: NUCLEAR STRUCTURE AND DYNAMICS '121491pp. 93-96
    OJ Roberts, CR Nita, AM Bruce, N Marginean, D Bucurescu, D Deleanu, D Filipescu, NM Florea, I Gheorghe, D Ghita, T Glodariu, R Lica, R Marginean, C Mihai, A Negret, T Sava, L Stroe, R Suvaila, S Toma, T Alharbi, T Alexander, S Aydin, BA Brown, F Browne, RJ Carroll, K Mulholland, Z Podolyak, PH Regan, JF Smith, M Smolen, CM Townsley (2016)E3 and M2 transition strengths in Bi-209(83), In: PHYSICAL REVIEW C93(1)ARTN 01430 AMER PHYSICAL SOC
    C Nociforo, F Farinon, F Bosch, D Boutin, H Geissel, R Knöbel, I Kojouharov, C Kozhuharov, J Kurcewicz, YA Litvinov, F Nolden, S Pietri, A Prochazka, MS Sanjari, C Scheidenberger, H Weick, JS Winfield, M Winkler, HJ Wollersheim, F Farinon, H Geissel, A Prochazka, C Scheidenberger, B Sun, A Musumarra, A Del Zoppo, P Figuera, M Fisichella, MG Pellegriti, V Scuderi, D Torresi, A Musumarra, T Kuboki, T Suzuki, T Yamaguchi, M Mazzocco, N Winckler, Y Motizuki, T Ohstubo, Y Ohkuma, Z Patyk, Z Podolyak (2012)Measurements of α-decay half-lives at GSI, In: Physica Scripta(T150)

    One of the major problems in nuclear astrophysics concerns the estimation of electron screening effects on nuclear reaction rates. We have proposed investigating the electron screening effects of nuclear systems which decay via α-particles, using fragmented beams at relativistic energies produced at the present GSI FRS-ESR facility. By looking at the modification of the half-lives and Q -value of highly charged emitters, we expect to estimate the electron screening energies. © 2012 The Royal Swedish Academy of Sciences.

    F Wang, BH Sun, Z Liu, RD Page, C Qi, C Scholey, SF Ashley, L Bianco, IJ Cullen, IG Darby, S Eeckhaudt, AB Garnsworthy, William Gelletly, MB Gomez-Hornillos, T Grahn, PT Greenlees, DG Jenkins, GA Jones, P Jones, DT Joss, R Julin, S Juutinen, S Ketelhut, S Khan, A Kishada, M Leino, M Niikura, M Nyman, J Pakarinen, S Pietri, Zsolt Podolyak, P Rahkila, S Rigby, J Saren, T Shizuma, J Sorri, S Steer, NJ Thompson, J Uusitalo, Philip Walker, S Williams, HF Zhang, WQ Zhang, L Zhu (2017)Spectroscopic factor and proton formation probability for the d3/2 proton emitter 151mLu, In: Physics Letters B770pp. 83-87 Elsevier

    The quenching of the experimental spectroscopic factor for the proton decay of 151mLu from the short-lived d3=2 isomeric state has been a long standing problem. In the present work, the proton energy value and half-life of this isomer were remeasured to be 1295(5) keV and 15.4 0.8 s, respectively, in an experiment at the Accelerator Laboratory of the University of Jyvaskyla. The re ned experimental data can resolve the discrepancy in the spectroscopic factor with the WKB approximation. It is also found that the proton formation probability extracted from the present measurements is much larger than that from the adopted data before, indicating no signi cant hindrance for the proton decay of 151mLu.

    In this thesis, the radioactive beam (RIB) 25Na at 5 MeV/u with an intensity of up to 3 times 107 pps is exploited to study states in 26Na using a 0.5 mg/cm2 deuterated polyethylene (CD2) target via the highly selective (d,p gamma) transfer reaction. The reaction products are recorded by using both SHARC (the Silicon Highly-segmented Array for Reactions and Coulex) and TIGRESS (The TRIUMF-ISAC Gamma-Ray Escape-Suppressed Spectrometer). The SHARC array is installed at the ISAC-2 facility in TRIUMF (Canada) to study a variety of reactions, but single-particle transfer with a radioactive ion beam is the reaction mechanism of interest here. This experimental study was the first radioactive beam experiment making use of the TIGRESS/SHARC detector set-up in 2009. This work significantly extends an earlier analysis. The motivation of this work is to combine the information extracted from the particle and the gamma detection in 25Na(d,p gamma) 26Na reaction data to compare the experimentally observed results and the shell model predictions. A total of 24 states were studied, of which 10 had not been reported previously, and detailed new information was extracted for most of these. Properties measured and discussed include: (1) the observed gamma-ray decay branching ratios, (2) the observed spectroscopic factors (population strength) in the (d,p) reaction, (3) the observed angular momentum transfer in the (d,p) reaction, (4) a comparison between experimental and the predicted excitation energies from shell model calculations, (5) spin assignments based on the predicted reaction strengths and observed gamma-ray decay scheme, and (6) analogies with the experimentally observed gamma-decay properties of the isotone 28Al. An extra new feature of this work, for the important interpretation of similar future experiments, is a detailed study of the gamma-ray angular distributions and their dependence upon the scattered proton angles in (d,p).

    K A Gladnishki, Z Podolyak, P H Regan, J Gerl, M Hellstrom, Y Kopatch, S Mandal, M Gorska, R D Page, H J Wollersheim, A Banu, G Benzoni, H Boardman, M La Commara, J Ekman, C Fahlander, H Geissel, H Grawe, E Kaza, A Korgul, M Matos, M N Mineva, C J Pearson, C Plettner, D Rudolph, C Scheidenberger, K H Schmidt, V Shishkin, D Sohler, K Summerer, J J Valiente-Dobon, P M Walker, H Weick, M Winkler, O Yordanov (2004)Angular Momentum Population in the Projectile Fragmentation of U-238 at 750 MeV/nucleon, In: Physical Review C69(2)

    A systematic study of the population probabilities of nanosecond and microsecond isomers produced following the projectile fragmentation of U-238 at 750 MeV/nucleon has been undertaken at the SIS/FRS facility at GSI. Approximately 15 isomeric states in neutron-deficient nuclei around A similar to 190 were identified and the corresponding. isomeric ratios determined. The results are compared with a model based on the statistical abrasion-ablation description of relativistic fragmentation and simple assumptions concerning gamma cascades in the final nucleus (sharp cutoff). This model represents an upper limit for the population of isomeric states in relativistic projectile fragmentation. When the decay properties of the states above the isomer are taken into account, as opposed to the sharp cutoff approximation, a good agreement between the experimental and calculated angular momentum population is obtained.

    M Bowry, Z Podolyak, J Kurcewicz, S Pietri, M Bunce, PH Regan, F Farinon, H Geissel, C Nociforo, A Prochazka, H Weick, P Allegro, J Benlliure, G Benzoni, P Boutachkov, J Gerl, M Gorska, A Gottardo, N Gregor, R Janik, R Knoebel, I Kojouharov, T Kubo, YA Litvinov, E Merchan, I Mukha, F Naqvi, B Pfeiffer, M Pfuetzner, W Plass, M Pomorski, B Riese, MV Ricciardi, K-H Schmidt, H Schaffner, N Kurz, AMD Bacelar, AM Bruce, GF Farrelly, N Alkhomashi, N Al-Dahan, C Scheidenberger, B Sitar, P Spiller, J Stadlmann, P Strmen, B Sun, H Takeda, I Tanihata, S Terashima, JJV Dobon, JS Winfield, H-J Wollersheim, PJ Woods, T Niksic, M Milin, D Vretenar, S Szilner (2012)Half-life Measurements of Isomeric States Populated in Projectile Fragmentation, In: NUCLEAR STRUCTURE AND DYNAMICS '121491pp. 317-320
    N Al-Dahan, Z Podolyak, PH Regan, M Gorska, H Grawe, KH Maier, J Gerl, SB Pietri, HJ Wollersheim, N Alkhomashi, AY Deo, AMD Bacelar, G Farrelly, SJ Steer, AM Bruce, P Boutachkov, C Domingo-Pardo, A Algora, J Benlliure, A Bracco, E Calore, E Casarejos, IJ Cullen, P Detistov, Z Dombradi, M Doncel, F Farinon, W Gelletly, H Geissel, N Goel, J Grebosz, R Hoischen, I Kojouharov, N Kurz, S Lalkovski, S Leoni, F Molina, D Montanari, AI Morales, A Musumarra, DR Napoli, R Nicolini, C Nociforo, A Prochazka, W Prokopowicz, B Rubio, D Rudolph, H Schaffner, P Strmen, I Szarka, T Swan, JS Thomas, JJ Valiente-Dobon, S Verma, PM Walker, H Weick (2009)Nuclear structure "southeast" of Pb-208: Isomeric states in Hg-208 and Tl-209, In: PHYSICAL REVIEW C80(6)ARTN 0pp. ?-? AMER PHYSICAL SOC
    MN Mineva, M Hellström, M Bernas, J Gerl, H Grawe, M Pfützner, PH Regan, M Rejmund, D Rudolph, F Becker, CR Bingham, T Enqvist, B Fogelberg, H Gausemel, H Geissel, J Genevey, M Górska, R Grzywacz, K Hauschild, Z Janas, I Kojouharov, Y Kopatch, A Korgul, W Korten, J Kurcewicz, M Lewitowicz, R Lucas, H Mach, S Mandal, P Mayet, C Mazzocchi, JA Pinston, Z Podolyàk, H Schaffner, C Schlegel, K Schmidt, K Sümmerer, HJ Wollersheim (2001)A new μs isomer in 136Sb produced in the projectile fission of 238U, In: European Physical Journal A11(1)pp. 9-13

    The neutron-rich isotope 136Sb has been produced following the relativistic projectile fission of 238U in an experiment performed at the Fragment Separator at GSI, Darmstadt. Delayed γ-ray spectroscopy of the fission products has been performed after isotope separation. A new isomeric state in 136Sb has been populated, and its lifetime measured as T1/2 = 565(50) ns. Realistic and empirical shell-model calculations have been performed and are compared to the experimental observables.

    A. Jungclaus, L. Cáceres, M. Górska, M. Pfützner, S. Pietri, E. Werner-Malento, H. Grawe, K. Langanke, G. Martínez-Pinedo, F. Nowacki, A. Poves, J. J. Cuenca-García, D. Rudolph, Zs. Podolyak, P. H. Regan, P. Detistov, S. Lalkovski, V. Modamio, J. Walker, P. Bednarczyk, P. Doornenbal, H. Geissel, J. Gerl, J. Grebosz, I. Kojouharov, N. Kurz, W. Prokopowicz, H. Schaffner, H. J. Wollersheim, K. Andgren, J. Benlliure, G. Benzoni, A. M. Bruce, E. Casarejos, B. Cederwall, F. C. L. Crespi, B. Hadinia, M. Hellström, R. Hoischen, G. Ilie, J. Jolie, A. Khaplanov, M. Kmiecik, R. Kumar, A. Maj, S. Mandal, F. Montes, S. Myalski, G. S. Simpson, S. J. Steer, S. Tashenov, O. Wieland (2007)Observation of Isomeric Decays in the r-Process Waiting-Point Nucleus 130Cd82, In: Physical Review Letters99(132501)
    V Rizzi, G Viesti, D Bazzacco, A Algora-Pineda, D Appelbe, G de Angelis, N Belcari, M Cinausero, M De Poli, TE Drake, A Gadea, A Galindo-Uribarri, N Gelli, D Fabris, E Farnea, E Fioretto, W Krolas, T Kroll, F Lucarelli, S Lunardi, M Lunardon, T Martinez, R Menegazzo, BK Nayak, G Nebbia, DR Napoli, B Nyako, C Petrache, Z Podolyak, G Prete, CR Alvarez, A Samant, P Spolaore, C Ur, K Zuber (2000)Search for hyperdeformed structures populated in the Cl-37+Sn-120 reaction by using EUROBALL III, In: EUROPEAN PHYSICAL JOURNAL A7(3)pp. 299-301 SPRINGER VERLAG
    MA Rizzutto, MN Rao, WA Seale, JRB Oliveira, EW Cybulska, NH Medina, RV Ribas, D Bazzacco, F Brandolini, S Lunardi, CM Petrache, Z Podolyak, C Rossi-Alvarez, CA Ur, G de Angelis, DR Napoli, P Spolaore, A Gadea, D De Acuna, M De Poli, E Farnea, D Foltescu, M Ionescu-Bujor, A Iordachescu, A Chatterjee, A Saxena, LS Bohus (2000)The pi h(11/2)circle times nu h(11/2) yrast band in odd-odd Tb-140, In: PHYSICAL REVIEW C62(2)ARTN 02730 AMERICAN PHYSICAL SOC
    N Cieplicka, B Fornal, KH Maier, B Szpak, R Broda, W Krolas, T Pawlat, J Wrzesinski, RVF Janssens, MP Carpenter, CJ Chiara, CR Hoffman, FG Kondev, T Lauritsen, S Zhu, Z Podolyak, M Bowry, M Bunce, W Gelletly, R Kempley, M Reed, P Regan, P Walker, E Wilson, AY Deo, G Dracoulis, G Lane, C Rodriguez-Triguero (2014)ANGULAR DISTRIBUTIONS OF gamma RAYS FROM Bi-210 PRODUCED IN Pb-208+Pb-208 DEEP-INELASTIC REACTIONS, In: ACTA PHYSICA POLONICA B45(2)pp. 205-210
    S Mandal, J Gerl, H Geissel, K Hauschild, M Hellstrom, Z Janas, I Kojouharov, Y Kopatch, RC Lemmon, P Mayet, Z Podolyak, PH Regan, H Schaffner, C Schlegel, J Simpson, HJ Wollersheim (2001)Gamma-ray spectroscopy with relativistic exotic heavy-ions, In: PRAMANA-JOURNAL OF PHYSICS57(1)pp. 161-164
    Z Podolyak, PG Bizzeti, AM Bizzeti-Sona, S Lunardi, D Bazzacco, A Dewald, A Algora, G de Angelis, M De Poli, E Farnea, A Gadea, DR Kasemann, T Klug, T Kroll, S Lenzi, DR Napoli, CM Petrache, R Peusquens, CR Alvarez, T Martinez, CA Ur (2000)Multiple octupole excitations in Gd-148, In: EUROPEAN PHYSICAL JOURNAL A8(2)pp. 147-151 SPRINGER
    J-M Regis, GS Simpson, A Blanc, G de France, M Jentschel, U Koester, P Mutti, V Paziy, N Saed-Samii, T Soldner, CA Ur, W Urban, AM Bruce, F Drouet, LM Fraile, S Ilieva, J Jolie, W Korten, T Kroell, S Lalkovski, H Mach, N Marginean, G Pascovici, Z Podolyak, PH Regan, OJ Roberts, JF Smith, C Townsley, A Vancraeyenest, N Warr (2014)Germanium-gated gamma-gamma fast timing of excited states in fission fragments using the EXILL&FATIMA spectrometer, In: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT763pp. 210-220 ELSEVIER SCIENCE BV
    JJ Valiente-Dobón, PH Regan, C Wheldon, CY Wu, N Yoshinaga, K Higashiyama, JF Smith, D Cline, RS Chakrawarthy, R Chapman, M Cromaz, P Fallon, SJ Freeman, A Görgen, W Gelletly, A Hayes, H Hua, SD Langdown, IY Lee, X Liang, AO Macchiavelli, CJ Pearson, Z Podolyák, G Sletten, R Teng, D Ward, DD Warner, AD Yamamoto (2004)136Ba studied via deep-inelastic collisions: Identification of the (νh11/2)10+-2 isomer, In: Physical Review C - Nuclear Physics69(2)pp. 243161-2431613

    A multinucleon transfer reaction between a thin self-supporting 78198Pt target and an 850 MeV 54136X6 beam has been used to populate and study the structure of the N=80 isotone 56136Ba. Making use of time-correlated γ-ray spectroscopy, evidence for an Iπ=(10+) isomeric state has been found with a measured half-life of 91±2 ns. Prompt-delayed correlations have also enabled the tentative measurement of the near-yrast states which lie above the isomer. Shell-model calculations suggest that the isomer has a structure which can be assigned predominantly as (vh 11/2)10+-2. The results are discussed in terms of standard and pair-truncated shell-model calculations, and compared to the even-Z N=80 isotones ranging from 50130Sn to 68148Er. A qualitative explanation of the observed dramatic decrease in the B(E2:10+→8+) value for the N=80 isotones at 136Ba is given in terms of the increasing single-hole energy of the h11/2 neutron configuration as the proton subshell is filled. The angular momentum transfer to the binary fragments in the reaction has also been investigated in terms of the average total γ-ray fold versus the scattering angle of the recoils.

    CM Petrache, D Bazzacco, G Falconi, S Lunardi, E Maglione, R Menegazzo, CR Alvarez, R Venturelli, G Viesti, G de Angelis, M De Poli, C Fahlander, E Farnea, A Gadea, G Maron, DR Napoli, Z Podolyak, S Perries, A Astier, L Ducroux, M Meyer, N Redon, A Bracco, S Frattini, S Leoni, I Deloncle, MG Porquet, N Marginean, CA Ur, B Cederwall, A Johnson, R Wyss (1999)Decay out of the highly-deformed bands in the A=130 mass region and experimental Delta(v) for Nd nuclei, In: NUCLEAR STRUCTURE 98481pp. 368-382
    A.I. Morales, G. Benzoni, H. Watanabe, G. de Angelis, S. Nishimura, L. Coraggio, A. Gargano, N. Itaco, T. Otsuka, Y. Tsunoda, P. Van Isacker, F. Browne, R. Daido, P. Doornenbal, Y. Fang, G. Lorusso, Z. Patel, S. Rice, L. Sinclair, P.-A. Söderström, T. Sumikama, J.J. Valiente-Dobón, J. Wu, Z.Y. Xu, A. Yagi, R. Yokoyama, H. Baba, R. Avigo, F.L. Bello Garrote, N. Blasi, A. Bracco, A.M. Bruce, F. Camera, S. Ceruti, F.C.L. Crespi, M.-C. Delattre, Zs. Dombradi, A. Gottardo, T. Isobe, I. Kojouharov, N. Kurz, I. Kuti, S Lalkovski, K. Matsui, B. Melon, D. Mengoni, T. Miyazaki, V. Modamio-Hoybjor, S. Momiyama, D.R. Napoli, M. Niikura, R. Orlandi, Zsolt Podolyak, Patrick Regan, H. Sakurai, E. Sahin, D. Sohler, H. Schaffner, R. Taniuchi, J. Taprogge, Zs. Vajta, O. Wieland, M. Yalcinkaya (2018)Is seniority a partial dynamic symmetry in the first ν g 9/2 shell?, In: Physics Letters B781pp. 706-712 Elsevier

    The low-lying structures of the midshell νg9/2 Ni isotopes 72Ni and 74Ni have been investigated at the RIBF facility in RIKEN within the EURICA collaboration. Previously unobserved low-lying states were accessed for the first time following β decay of the mother nuclei 72Co and 74Co. As a result, we provide a complete picture in terms of the seniority scheme up to the first (8+) levels for both nuclei. The experimental results are compared to shell-model calculations in order to define to what extent the seniority quantum number is preserved in the first neutron g9/2 shell. We find that the disappearance of the seniority isomerism in the View the MathML source states can be explained by a lowering of the seniority-four (6+) levels as predicted years ago. For 74Ni, the internal de-excitation pattern of the newly observed View the MathML source state supports a restoration of the normal seniority ordering up to spin J=4. This property, unexplained by the shell-model calculations, is in agreement with a dominance of the single-particle spherical regime near 78Ni.

    D Sohler, Z Podolyak, Z Dombradi, J Gulyas, A Algora, S Brant, V Krstic, V Paar (1999)Further evidence on shape coexistence in As-72, In: PHYSICAL REVIEW C59(3)pp. 1328-1333 AMERICAN PHYSICAL SOC
    CM Petrache, Z Podolyak, D Bazzacco, S Lunardi, R Menegazzo, MN Rao, CR Alvarez, T Scanferla, CA Ur, R Venturelli, G de Angelis, D de Acuna, M De Poli, E Farnea, A Gadea, DR Napoli, A Dewald, J Gableske, P von Brentano, R Wyss (1998)Deformation of highly deformed bands in Nd nuclei, In: NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA A-NUCLEI PARTICLES AND FIELDS111(6-7)pp. 657-661
    MN Rao, RV Ribas, NH Medina, JRB Oliveira, MA Rizzutto, WA Seale, CM Petrache, D Bazzacco, S Lunardi, CR Alvarez, T Scanferla, CA Ur, R Venturelli, FR Espinoza-Quinones, Z Podolyak, D De Acuna, G de Angelis, M De Poli, E Farnea, A Gadea, DR Napoli, LH Zhu, A Dewald, J Gableske, P von Brentano (1998)Influence of valence neutron configuration on quadrupole deformation in doubly-odd Pr-134, In: PHYSICAL REVIEW C58(3)pp. R1367-R1371 AMERICAN PHYSICAL SOC
    TS Brock, BS Nara Singh, P Boutachkov, N Braun, A Blazhev, Z Liu, R Wadsworth, M Górska, H Grawe, S Pietri, C Domingo-Pardo, D Rudolph, SJ Steer, A Ataç, L Bettermann, L Cáceres, T Engert, K Eppinger, T Faestermann, F Farinon, F Finke, K Geibel, J Gerl, R Gernhäuser, N Goel, A Gottardo, J Grȩbosz, C Hinke, R Hoischen, G Ilie, H Iwasaki, J Jolie, A Kaşkaş, I Kojuharov, R Krücken, N Kurz, E Merchán, C Nociforo, J Nyberg, M Pfützner, A Prochazka, Z Podolyák, PH Regan, P Reiter, S Rinta-Antila, H Schaffner, C Scholl, P-A Söderström, N Warr, H Weick, H-J Wollersheim, PJ Woods (2010)Observation of a new high-spin isomer in Pd94, In: Physical Review C - Nuclear Physics82(6)
    F Browne, AM Bruce, T Sumikama, I Nishizuka, S Nishimura, P Doornenbal, G Lorusso, Z Patel, S Rice, L Sinclair, P-A Soederstroem, H Watanabe, J Wu, ZY Xu, H Baba, N Chiga, R Carroll, R Daido, F Didierjean, Y Fang, G Gey, E Ideguchi, N Inabe, T Isobe, D Kameda, I Kojouharov, N Kurz, T Kubo, S Lalkovski, Z Li, R Lozeva, N Naoki, H Nishibata, A Odahara, Z Podolyak, PH Regan, OJ Roberts, H Sakurai, H Schaffner, GS Simpson, H Suzuki, H Takeda, M Tanaka, J Taprogge, V Werner, O Wieland, A Yagi (2015)GAMMA-RAY SPECTROSCOPY IN THE VICINITY OF Zr-108, In: ACTA PHYSICA POLONICA B46(3)pp. 721-724 WYDAWNICTWO UNIWERSYTETU JAGIELLONSKIEGO
    M Stanoiu, D Sohler, O Sorlin, Z Dombradi, F Azaiez, BA Brown, C Borcea, C Bourgeois, Z Elekes, Z Fueloep, S Grevy, D Guillemaud-Mueller, F Ibrahim, A Kerek, A Krasznahorkay, M Lewitowicz, SM Lukyanov, J Mrazek, F Negoita, Y-E Penionzhkevich, Z Podolyak, MG Porquet, P Roussel-Chomaz, MG Saint-Laurent, H Savajols, G Sletten, J Timar, C Timis (2012)Spectroscopy of F-26, In: PHYSICAL REVIEW C85(1)ARTN 0pp. ?-? AMER PHYSICAL SOC
    Z Podolyak, PM Walker, DM Cullen, GD Dracoulis, P Fallon, B Fairchild, K Hauschild, AO Macchiavelli, DP McNabb, A Savelius, D Ward, C Wheldon (2000)Search for very long-lived isomers in the hafnium-tungsten region, In: PHYSICAL REVIEW C62(3)ARTN 03430 AMERICAN PHYSICAL SOC
    AB Garnsworthy, PH Regan, S Pietri, D Rudolph, L Caceres, M Gorska, Z Podolyak, SJ Steer, A Heinz, F Becker, P Bednarczyk, P Doornenbal, H Geissel, J Gerl, H Grawe, J Grebosz, A Kelic, I Kojouharov, N Kurz, F Montes, W Prokopwicz, T Saito, H Schaffner, S Tachenov, E Werner-Malento, HJ Wollersheim, G Benzoni, B Blank, C Brandau, AM Bruce, F Camera, WN Catford, IJ Cullen, Z Dombradi, E Estevez, W Gelletly, R Hoischen, G Ilie, J Jolie, GA Jones, A Jungclaus, M Kmiecik, FG Kondev, T Kurtukian-Nieto, S Lalkovski, Z Liu, A Maj, S Myalski, M Pfutzner, T Shizuma, AJ Simons, S Schwertel, PM Walker, O Wieland (2007)Isomeric states in the light Tc isotopes, In: ACTA PHYSICA POLONICA B38(4)pp. 1265-1269
    Laila Gurgi, Patrick Regan, T Daniel, Zsolt Podolyak, AM Bruce, PJR Mason, N Mǎrginean, R Mǎrginean, V Werner, T Alharbi, N Alkhomashi, AD Bajoga, R Britton, I Cǎta-Danil, RJ Carroll, D Deleanu, D Bucurescu, N Florea, I Gheorghe, DG Ghita, R Lice, C Mihai, KF Mulholland, A Negret, A Olacel, OJ Roberts, T Sava, P-A Söderström, L Stroe, R Suvaila, S Toma, E Wilson, RT Wood (2016)Nanosecond lifetime measurements of Iπ¼9/2- intrinsic excited states and low-lying B(E1)strengths in 183Re using combined HPGe-LaBr3 coincidence spectroscopy, In: Radiation Physics and Chemistry137pp. 7-11 Elsevier

    This paper presents precision measurements of electromagnetic decay probabilities associated with electric dipole transitions in the prolate-deformed nucleus 183Re. The nucleus of interest was formed using the fusion evaporation reaction 180Hf(7Li,4n)183Re at a beam energy of 30 MeV at the tandem accelerator at the HH-IFIN Institute, Bucharest Romania. Coincident decay gamma rays from near-yrast cascades were detected using the combined HPGe-LaBr3 detector array ROSPHERE. The time differences between cascade gamma rays were measured using the LaBr3 detectors to determine the half-lives of the two lowest lying spin-parity 9/2- states at excitation energies of 496 and 617 keV to be 5.65(5) and 2.08(3) ns respectively. The deduced E1 transition rates from these two states are discussed in terms of the K-hindrance between the low-lying structures in this prolate-deformed nucleus.

    T Alexander, Z Podolyak, ML Cortes, J Gerl, D Rudolph, LG Sarmiento, F Ameil, T Arici, D Bazzacco, C Bauer, MA Bentley, A Blazhev, M Bowry, P Boutachkov, R Carroll, C Fahlander, A Gadea, J Gellanki, W Gelletly, A Givechev, N Goel, P Golubev, M Gorska, A Gottardo, E Gregor, G Guastalla, T Habermann, M Hackstein, A Jungclaus, I Kojouharov, W Korten, S Kumar, N Kurz, N Lalovic, M Lettmann, C Lizarazo, C Louchart, S Mandal, E Merchan, C Michelagnoli, T Moeller, K Moschner, Z Patel, N Pietralla, S Pietri, D Ralet, M Reese, PH Regan, P Reiter, H Schaffner, P Singh, C Stahl, R Stegmann, O Stezowksi, J Taprogge, P Thoele, PM Walker, O Wieland, A Wendt, E Wilson, R Wood, H-J Wollersheim (2015)ISOMERIC RATIOS IN Hg-206, In: ACTA PHYSICA POLONICA B46(3)pp. 601-605 WYDAWNICTWO UNIWERSYTETU JAGIELLONSKIEGO

    206Hg was populated in the fragmentation of an E∕A = 1 GeV 208Pb beam at GSI. It was part of a campaign to study nuclei around 208Pb via relativistic Coulomb excitation. The observation of the known isomeric states confirmed the identification of the fragmentation products. The isomeric decays were also used to prove that the correlations between beam identification detectors and the AGATA γ-ray tracking array worked properly and that the tracking efficiency was independent of the time relative to the prompt flash.

    H Mach, PM Walker, R Julin, M Leino, S Juutinen, M Stanoiu, Z Podolyak, R Wood, AM Bruce, T Back, JA Cameron, B Cederwall, J Ekman, B Fogelberg, PT Greenless, M Hellstrom, P Jones, W Klamra, K Lagergren, AP Leppanen, P Nieminen, R Orlandi, J Pakarinen, P Rahkila, D Rudolph, G Simpson, J Uusitalo, C Wheldon (2005)Application of ultra-fast timing techniques to the study of exotic and weakly produced nuclei, In: JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS31(10)pp. S1421-S1426
    AB Garnsworthy, PH Regan, L Caceres, S Pietri, Y Sun, D Rudolph, M Gorska, Z Podolyak, SJ Steer, R Hoischen, A Heinz, F Becker, P Bednarczyk, P Doornenbal, H Geissel, J Gerl, H Grawe, J Grebosz, A Kelic, I Kojouharov, N Kurz, F Montes, W Prokopowicz, T Saito, H Schaffner, S Tachenov, E Werner-Malento, HJ Wollersheim, G Benzoni, BB Blank, C Brandau, AM Bruce, F Camera, WN Catford, IJ Cullen, Z Dombradi, E Estevez, W Gelletly, G Ilie, J Jolie, GA Jones, A Jungclaus, M Kmiecik, FG Kondev, T Kurtukian-Nieto, S Lalkovski, Z Liu, A Maj, S Myalski, M Pfutzner, S Schwertel, T Shizuma, AJ Simons, PM Walker, O Wielandi, FR Xu (2008)Neutron-proton pairing competition in N = Z nuclei: Metastable state decays in the proton dripline nuclei Nb-82(41) and Tc-86(43), In: PHYSICS LETTERS B660(4)pp. 326-330 ELSEVIER SCIENCE BV
    S Perries, A Astier, L Ducroux, M Meyer, N Redon, CM Petrache, D Bazzacco, G Falconi, S Lunardi, M Lunardon, CR Alvarez, CA Ur, R Venturelli, G Viesti, I Deloncle, MG Porquet, G de Angelis, M de Poli, C Fahlander, E Farnea, D Foltescu, A Gadea, DR Napoli, Z Podolyak, A Bracco, S Frattini, S Leoni, B Cederwall, A Johnson, RA Wyss (1999)Decay-out of the yrast superdeformed band in Nd-136: Towards an experimental extraction of the neutron pairing gap at large deformation, In: PHYSICAL REVIEW C60(6)ARTN 06431 AMERICAN PHYSICAL SOC
    PR John, JJ Valiente-Dob on, D Mengoni, V Modamio, S Lunardi, D Bazzacco, A Gadea, C Wheldon, TR Rodr guez, T Alexander, G de Angelis, N Ashwood, M Barr, G Benzoni, B Birkenbach, PG Bizzeti, AM Bizzeti-Sona, S Bottoni, M Bowry, A Bracco, F Browne, M Bunce, F Camera, L Corradi, FCL Crespi, B Melon, E Farnea, E Fioretto, A Gottardo, L Grente, H Hess, T Kokalova, T Mijatovi c, G Montagnoli, D Montanari, DR Napoli, Zsolt Podolyak, G Pollarolo, F Recchia, P Reiter, OJ Roberts, E Sahin, M-D Salsac, F Scarlassara, M Sferrazza, P-A Soderstrom, AM Stefanini, S Szilner, CA Ur, A Vogt, A Walshe (2017)In-beam gamma-ray spectroscopy of the neutron-rich platinum isotope 200Pt toward the N = 126 shell gap, In: Physical Review C: Nuclear Physics95064321pp. 064321-1 American Physical Society

    The neutron-rich nucleus ____nucleus{200}{Pt} is investigated via in-beam ____gamma-ray spectroscopy in order to study the shape evolution in the neutron-rich platinum isotopes towards the N = 126 shell closure. The two-neutron transfer reaction ____nucleus{198}{Pt}(____nucleus{82}{Se}, ____nucleus{80}{Se})____nucleus{200}{Pt} is used to populate excited states of ____nucleus{200}{Pt}. The Advanced Gamma Ray Tracking Array (AGATA) demonstrator coupled with the PRISMA spectrometer detects ____gamma rays coincident with the ____nucleus{80}{Se} recoils, the binary partner of ____nucleus{200}{Pt}. The binary partner method is applied to extract the ____gamma-ray transitions and build the level scheme of ____nucleus{200}{Pt}. The level at 1884____,keV reported by Yates et. al [Phys. Rev. C 37, 1889] was confirmed to be at 1882.1____,keV and assigned as the (6^+_1) state. An additional ____gamma ray was found and it presumably de-excites the (8^+_1) state. The results are compared with state-of-the-art beyond mean-field calculations, performed for the even-even ____nucleus{190-204}{Pt} isotopes, revealing that ____nucleus{200}{Pt} marks the transition from the ____gamma-unstable behaviour of lighter Pt nuclei towards a more spherical one when approaching the N=126 shell closure.

    Z Patel, Philip Walker, Zsolt Podolyak, Patrick Regan, Thomas Berry, P-A Söderström, H Watanabe, E Ideguchi, GS Simpson, S Nishimura, Q Wu, FR Xu, F Browne, P Doornenbal, G Lorusso, S Rice, L Sinclair, T Sumikama, J Wu, ZY Xu, N Aoi, H Baba, FL Bello Garrote, G Benzoni, R Daido, Zs Dombrádi, Y Fang, N Fukuda, G Gey, S Go, A Gottardo, N Inabe, T Isobe, D Kameda, K Kobayashi, M Kobayashi, T Komatsubara, I Kojouharov, T Kubo, N Kurz, I Kuti, Z Li, M Matsushita, S Michimasa, C-B Moon, H Nishibata, I Nishizuka, A Odahara, E Sahin, H Sakurai, H Schaffner, H Suzuki, H Takeda, M Tanaka, J Taprogge, Zs Vajta, A Yagi, R Yokoyama (2017)Isomer-delayed -ray spectroscopy of A = 159 - 164 midshell nuclei and the variation of K-forbidden E1 transition hindrance factors, In: Physical Review C96(3)034305 American Physical Society

    Excited states have been studied in ____iso{159}{Sm}, ____iso{161}{Sm}, ____iso{162}{Sm} (Z~=~62), ____iso{163}{Eu} (Z~=~63), and ____iso{164}{Gd} (Z~=~64), populated by isomeric decay following 238U projectile fission at RIBF, RIKEN. The isomer half-lives range from 50 ns to 2.6 ____mus. In comparison with other published data, revised interpretations are proposed for ____iso{159}{Sm} and ____iso{163}{Eu}. The first data for excited states in ____iso{161}{Sm} are presented, where a 2.6 ____mus isomer is assigned a three-quasiparticle, K^____pi = 17/2^- structure. The interpretation is supported by multi-quasiparticle Nilsson-BCS calculations, including the blocking of pairing correlations. A consistent set of reduced E1 hindrance factors is obtained. Limited evidence is also reported for isomeric decay in 163Sm, 164Eu and 165Eu.

    KA Gladnishki, Z Podolyak, J Gerl, M Hellstrom, Y Kopatch, S Mandal, M Gorska, PH Regan, HJ Wollersheim, A Banu, G Benzoni, H Boardman, M La Commara, J Ekman, C Fahlander, H Geissel, H Grawe, E Kaza, A Korgul, M Matos, MN Mineva, RD Page, CJ Pearson, C Plettner, D Rudolph, C Scheidenberger, V Shishkin, D Sohler, K Summerer, JJ Valiente-Dobon, H Weick, M Winkler (2003)Isomer spectroscopy in the neutron-deficient lead region following projectile fragmentation, In: ACTA PHYSICA POLONICA B34(4)pp. 2395-2398
    FR Espinoza-Quinones, MA Rizzutto, EW Cybulska, WA Seale, JRB Oliveira, NH Medina, RV Ribas, MN Rao, D Bazzacco, F Brandolini, S Lunardi, CM Petrache, Z Podolyak, C Rossi-Alvarez, F Soramel, CA Ur, MA Cardona, G de Angelis, DR Napoli, P Spolaore, A Gadea, D De Acuna, M De Poli, E Farnea, D Foltescu, M Ionescu-Bujor, A Iordachescu, V Roca, F Terrasi, A Chatterjee, A Saxena, LS Bohus (1999)High-spin state spectroscopy in Tb-143, In: PHYSICAL REVIEW C60(5)ARTN 05430 AMERICAN PHYSICAL SOC
    OJ Roberts, AM Bruce, PH Regan, Z Podolyak, CM Townsley, JF Smith, KF Mulholland, A Smith (2014)A LaBr3: Ce fast-timing array for DESPEC at FAIR, In: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT748pp. 91-95 ELSEVIER SCIENCE BV
    AN Mineva, M Hellstrom, M Bernas, J Gerl, H Grawe, M Pfutzner, PH Regan, M Rejmund, D Rudolph, F Becker, CR Bingham, T Enqvist, B Fogelberg, H Gausemel, H Geissel, J Genevey, M Gorska, R Grzywacz, K Hauschild, Z Janas, I Kojouharov, Y Kopatch, A Korgul, W Korten, J Kurcewicz, M Lewitowicz, R Lucas, H Mach, S Mandal, P Mayet, C Mazzocchi, JA Pinston, Z Podolyak, H Schaffner, C Schlegel, K Schmidt, K Summerer, HJ Wollersheim (2001)A new mu s isomer in Sb-136 produced in the projectile fission of U-238, In: EUROPEAN PHYSICAL JOURNAL A11(1)pp. 9-13 SPRINGER-VERLAG
    Z Podolyak, S Mohammadi, G De Angelis, YH Zhang, M Axiotis, D Bazzacco, PG Bizzeti, F Brandolini, R Broda, D Bucurescu, E Farnea, W Gelletly, A Gadea, M Ionescu-Bujor, A Iordachescu, T Kroll, SD Langdown, S Lunardi, N Marginean, T Martinez, NH Medina, B Quintana, PH Regan, B Rubio, CA Ur, JJ Valiente-Dobon, PM Walker (2004)Structure of neutron-rich nuclei from deep-inelastic reactions, In: INTERNATIONAL JOURNAL OF MODERN PHYSICS E-NUCLEAR PHYSICS13(1)pp. 123-126
    GA Jones, Z Podolyak, PM Walker, PH Regan, G de Angelis, M Axiotis, D Bazzacco, PG Bizzeti, F Brandolini, R Broda, D Bucurescu, E Farnea, W Gelletly, A Gadea, M Ionescu-Bujor, A Iordachescu, T Kroll, SD Langdown, S Lunardi, N Marginean, T Martinez, NH Medina, B Quintana, B Rubio, CA Ur, JJ Valiente-Dobon, SJ Williams, YH Zhang (2005)Population of yrast states in Os-191 using deep-inelastic reactions, In: JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS31(10)pp. S1891-S1894
    CR Nita, D Bucurescu, N Marginean, M Avrigeanu, G Bocchi, S Bottoni, A Bracco, AM Bruce, G Cata-Danil, G Colo, D Deleanu, D Filipescu, DG Ghita, T Glodariu, S Leoni, C Mihai, PJR Mason, R Marginean, A Negret, D Pantelica, Z Podolyak, PH Regan, T Sava, L Stroe, S Toma, CA Ur, E Wilson (2014)Fast-timing lifetime measurements of excited states in Cu-67, In: PHYSICAL REVIEW C89(6)ARTN 06431 AMER PHYSICAL SOC
    L Chen, WR Plaß, H Geissel, R Knöbel, C Kozhuharov, YA Litvinov, Z Patyk, C Scheidenberger, K Siegień-Iwaniuk, B Sun, H Weick, K Beckert, P Beller, F Bosch, D Boutin, L Caceres, JJ Carroll, DM Cullen, IJ Cullen, B Franzke, J Gerl, M Górska, GA Jones, A Kishada, J Kurcewicz, SA Litvinov, Z Liu, S Mandal, F Montes, G Münzenberg, F Nolden, T Ohtsubo, Z Podolyák, R Propri, S Rigby, N Saito, T Saito, M Shindo, M Steck, P Ugorowski, PM Walker, S Williams, M Winkler, H-J Wollersheim, T Yamaguchi (2010)Discovery and investigation of heavy neutron-rich isotopes with time-resolved Schottky spectrometry in the element range from thallium to actinium, In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics691(6)pp. 234-237 Elsevier

    238U projectile fragments have been created at the entrance of the fragment separator FRS, spatially separated in flight within 0.45 μs and injected into the storage-cooler ring ESR at 7.9 Tm corresponding to about 70% light velocity. Accurate new mass values and lifetime information of the stored exotic nuclei in the element range from platinum to uranium have been obtained with single-particle Schottky spectrometry. In this experiment the new isotopes of 236Ac, 224At, 221Po, 222Po, and 213Tl were discovered. The isotopes were unambiguously identified and their masses measured. In addition, the time-correlated data have provided information on the lifetime of the new nuclides. The discovery of isotopes along with accurate mass measurement has been achieved for the first time at the FRS-ESR facility. The results will contribute to the knowledge of the decay products from the r-process nuclei and enable a crucial test of the predictive power of modern nuclear mass and half-life models.

    L Cáceres, D Sohler, S Grévy, O Sorlin, Z Dombrádi, B Bastin, NL Achouri, JC Angélique, F Azaiez, D Baiborodin, R Borcea, C Bourgeois, A Buta, A Bürger, R Chapman, JC Dalouzy, Z Dlouhy, A Drouard, Z Elekes, S Franchoo, L Gaudefroy, S Iacob, B Laurent, M Lazar, X Liang, E Liénard, J Mrazek, L Nalpas, F Negoita, F Nowacki, NA Orr, Y Penionzhkevich, Z Podolyák, F Pougheon, A Poves, P Roussel-Chomaz, MG Saint-Laurent, M Stanoiu, I Stefan (2012)In-beam spectroscopic studies of the 44S nucleus, In: Physical Review C - Nuclear Physics85(2)024311pp. ?-? American Physical Society
    A. Vogt, M. Siciliano, B. Birkenbach, P. Reiter, K. Hadyńska-Klęk, C. Wheldon, J.J. Valiente-Dobón, E Teruya, N. Yoshinaga, K. Arnswald, D. Bazzacco, A. Blazhev, A. Bracco, B Bruyneel, R.S. Chakrawarthy, R. Chapman, D. Cline, L. Corradi, F.C.L. Crespi, M. Cromaz, G. de Angelis, J. Eberth, P. Fallon, E. Farnea, E. Fioretto, H. Hess, R. Hetzenegger, R. Hirsch, H. Hua, P.R. John, J. Jolie, A. Jungclaus, V. Karayonchev, L. Kaya, W. Korten, I.Y. Lee, S. Leoni, X. Liang, S. Lunardi, A.O. Macchiavelli, R. Menegazzo, D. Mengoni, C. Michelagnoli, T. Mijatovic, G. Montagnoli, D. Montanari, C. Müller-Gatermann, D. Napoli, C.J. Pearson, Zsolt Podolyak, G. Pollarolo, A. Pullia, M. Queiser, F. Recchia, P.H. Regan, J.-M. Régis, N. Saed-Samii, E. Sahin, F. Scarlassara, M. Seidlitz, B. Siebeck, G. Sletten, J.F. Smith, P.-A. Söderström, A.M. Stefanini, O. Stezowski, S. Szilner, B. Szpak, R. Teng, C. Ur, D.D. Warner, K. Wolf, C.Y. Wu, K.O. Zell (2017)High-spin structures in ¹³²_mathrmXe and ¹³³_mathrmXe and evidence for isomers along the ℕ=79 isotones, In: Physical Review C - Nuclear Physics96(2)pp. 024321-1 American Physical Society

    The 50 N,Z 82 region of the Segrè chart, spanning the nuclei “northwest” of doubly-magic 132Sn, is an intriguing study ground to test the suitability and predictive power of nuclear models at both low and high spins. Low-spin excited states in the nearly spherical nuclei near proton- and neutronshell closures are well described as anharmonic vibrations [1] with a gradual change to rotational structures further away from the closed shells. Further on, quasiparticle excitations play a key role and are responsible for the presence of yrast-trap isomers. These long-lived states interrupt and fragment the decay flux in spectroscopic investigations. High-j couplings involving the unique-parity h11/2 neutron-hole orbital give rise to a wealth of high-spin states with multi-quasiparticle character. In particular, detailed knowledge of isomers is crucial to ascertain the active quasiparticle configurations in the specific nucleus.

    J J Valiente-Dobon, R H Regan, C Wheldon, C Y Wu, N Yoshinaga, K Higashiyama, J F Smith, D Cline, R S Chakrawarthy, R Chapman, M Cromaz, P Fallon, S J Freeman, A Gorgen, W Gelletly, A Hayes, H Hua, S D Langdown, I Y Lee, X Liang, A O Macchiavelli, C J Pearson, Z Podolyak, G Sletten, R Teng, D Ward, D D Warner, A D Yamamoto (2004)Ba-136 Studied Via Deep-Inelastic Collisions: Identification of the (vh(11/2))(10+)(-2) Isomer, In: Physical Review C69(2)

    A multinucleon transfer reaction between a thin self-supporting Pt-198(78) target and an 850 MeV Xe-136(54) beam has been used to populate and study the structure of the N=80 isotone Ba-136(56). Making use of time-correlated gamma-ray spectroscopy, evidence for an I-pi=(10(+)) isomeric state has been found with a measured half-life of 91+/-2 ns. Prompt-delayed correlations have also enabled the tentative, measurement of the near-yrast states which lie above the isomer. Shell-model calculations suggest that the isomer has a structure which can be assigned predominantly as (nuh(11/2))(10+)(-2). The results are discussed in terms of standard and pair-truncated shell-model calculations, and compared to the even-Z N=80 isotones ranging from Sn-130(50) to Er-148(68). A qualitative explanation of the observed dramatic decrease in the B(E2:10(+)-->8(+)) value for the N=80 isotones at Ba-136 is given in terms of the increasing single-hole energy of the h(11/2) neutron configuration as the proton subshell is filled. The angular momentum transfer to the binary fragments in the reaction has also been investigated in terms of the average total gamma-ray fold versus the scattering angle of the recoils.

    A Tarifeno-Saldivia, JL Tain, C Domingo-Pardo, F Calvino, G Cortes, VH Phong, A Riego, J Agramunt, A Algora, N Brewer, R Caballero-Folch, P Coleman-Smith, T Davinson, I Dillmann, A Estrade, C Griffin, R Grzywacz, L Harkness-Brennan, GG Kiss, M Kogimtzis, I Lazarus, G Lorusso, K Matsui, K Miernik, F Montes, A Morales, S Nishimura, RD Page, Z Podolyak, VF Pucknell, BC Rasco, Patrick Regan, P Rubio, KP Rykaczewski, H Sakurai, J Simpson, E Sokol, R Surman, A Svirkhin, SL Thomas, A Tolosa, P Woods (2017)Conceptual design of a hybrid neutron-gamma detector for study of -delayed neutrons at the RIB facility of RIKEN, In: Journal of Instrumentation12 Institute of Physics

    The conceptual design of the BRIKEN neutron detector at the radioactive ion beam factory (RIBF) of the RIKEN Nishina Center is reported. The BRIKEN setup is a complex system aimed at detecting heavy-ion implants, β particles, γ rays and β-delayed neutrons. The whole setup includes the Advanced Implantation Detection Array (AIDA), two HPGe Clover detectors and up to 166 3He-filled counters embedded in a high-density polyethylene moderator. The design is quite complex due to the large number and different types of 3He-tubes involved and the additional constraints introduced by the ancillary detectors for charged particles and γ rays. This article reports on a novel methodology developed for the conceptual design and optimisation of the 3He-counter array, aiming for the best possible performance in terms of neutron detection. The algorithm is based on a geometric representation of two selected detector parameters of merit, namely, the average neutron detection efficiency and the efficiency flatness as a function of a reduced number of geometric variables. The response of the neutron detector is obtained from a systematic Monte Carlo simulation implemented in Geant4. The robustness of the algorithm allowed us to design a versatile detection system, which operated in hybrid mode includes the full neutron counter and two clover detectors for high-precision gamma spectroscopy. In addition, the system can be reconfigured into a compact mode by removing the clover detectors and re-arranging the 3He tubes in order to maximize the neutron detection performance. Both operation modes shows a rather flat and high average efficiency. In summary, we have designed a system which shows an average efficiency for hybrid mode (3He tubes + clovers) of 68.6% and 64% for neutron energies up to 1 and 5 MeV, respectively. For compact mode (only 3He tubes), the average efficiency is 75.7% and 71% for neutron energies up to 1 and 5 MeV, respectively. The performance of the BRIKEN detection system has been also quantified by means of Monte Carlo simulations with different neutron energy distributions.

    S Lalkovski, D Ivanova, EA Stefanova, A Korichi, P Petkov, J Kownacki, T Kutsarova, A Minkova, D Bazzacco, M Bergstroem, A Goergen, B Herskind, H Huebel, A Jansen, S Kisyov, TL Khoo, FG Kondev, A Lopez-Martens, Z Podolyak, G Schoenwasser, O Yordanov (2014)Coexisting structures in Ru-105, In: PHYSICAL REVIEW C89(6)ARTN 06431 AMER PHYSICAL SOC
    Z Podolyak, SJ Steer, S Pietri, M Gorska, PH Regan, D Rudolph, AB Garnsworthy, R Hoischen, J Gerl, HJ Wollersheim, H Grawe, KH Maier, F Becker, P Bednarczyk, L Caceres, P Doornenbal, H Geissel, J Grebosz, A Kelic, I Kojouharov, N Kurz, F Montes, W Prokopowicz, T Saito, H Schaffner, S Tashenov, A Heinz, T Kurtukian-Nieto, G Benzoni, M Pfuetzner, A Jungclaus, DL Balabanski, C Brandau, BA Brown, AM Bruce, WN Catford, IJ Cullen, Z Dombradi, ME Estevez, W Gelletly, G Ilie, J Jolie, GA Jones, M Kmiecik, FG Kondev, R Kruecken, S Lalkovski, Z Liu, A Maj, S Myalski, S Schwertel, T Shizuma, PM Walker, E Werner-Malento, O Wieland (2009)Structure of neutron-rich nuclei around the N=126 closed shell; the yrast structure of Au-205(126) up to spin-parity I-pi = (19/2(+)), In: EUROPEAN PHYSICAL JOURNAL A42(3)pp. 489-493
    T. A. Berry, Zs. Podolyak, R. J. Carroll, R. Lică, B. A. Brown, H. Grawe, Ch. Sotty, N. K. Timofeyuk, T. Alexander, A. N. Andreyev, S. Ansari, M. J. G. Borge, M. Brunet, J. R. Cresswell, C. Fahlander, L. M. Fraile, H. O. U. Fynbo, E. Gamba, W. Gelletly, R.-B. Gerst, M. Górska, A. Gredley, P. Greenlees, L. J. Harkness-Brennan, M. Huyse, S. M. Judge, D. S. Judson, J. Konki, M. Kowalska, J. Kurcewicz, I. Kuti, S. Lalkovski, I. Lazarus, M. Lund, M. Madurga, N. Mărginean, R. Mărginean, I. Marroquin, C. Mihai, R. E. Mihai, E. Nácher, A. Negret, S. Nae, C. Niţă, S. Pascu, R. D. Page, Z. Patel, A. Perea, J. Phrompao, M. Piersa, V. Pucknell, P. Rahkila, E. Rapisarda, P. H. Regan, F. Rotaru, M. Rudigier, C. M. Shand, R. Shearman, E. C. Simpson, S. Stegemann, T. Stora, O. Tengblad, A. Turturica, P. Van Duppen, V. Vedia, P. M. Walker, N. Warr, F. P. Wearing, H. De Witte (2020)Octupole states in 207Tl studied through β decay, In: Physical Review C101(5)054311 American Physical Society

    The β decay of 207Hg into the single-proton-hole nucleus 207Tl has been studied through γ-ray spectroscopy at the ISOLDE Decay Station (IDS) with the aim of identifying states resulting from coupling of the πs−11/2, πd−13/2, and πh−111/2 shell model orbitals to the collective octupole vibration. Twenty-two states were observed lying between 2.6 and 4.0 MeV, eleven of which were observed for the first time, and 78 new transitions were placed. Two octupole states (s1/2-coupled) are identified and three more states (d3/2-coupled) are tentatively assigned using spin-parity inferences, while further h11/2-coupled states may also have been observed for the first time. Comparisons are made with state-of-the-art large-scale shell model calculations and previous observations made in this region, and systematic underestimation of the energy of the octupole vibrational states is noted. We suggest that in order to resolve the difference in predicted energies for collective and noncollective t=1 states (t is the number of nucleons breaking the 208Pb core), the effect of t=2 mixing may be reduced for octupole-coupled states. The inclusion of mixing with t=0,2,3 excitations is necessary to replicate all t=1 state energies accurately.

    HM El-Masri, PM Walker, Z Podolyak, M Caamano, GD Dracoulis, AP Byrne, T Kibedi, AM Baxter, J Hazel, AM Bruce, JN Orce, A Emmanoulidis, DM Cullen, C Wheldon (2003)High-K states in Re-180, In: ACTA PHYSICA POLONICA B34(4)pp. 2301-2304
    N Nishimura, Z Podolyak, D-L Fang, T Suzuki (2016)Impact of the first-forbidden beta decay on the production of A = 195 r-process peak, In: Physics Letters B756pp. 273-277 Elsevier

    We investigated the effects of first-forbidden transitions in β decays on the production of the r -process A∼195 peak. The theoretical calculated β-decay rates with β-delayed neutron emission were examined using several astrophysical conditions. As the FF decay is dominant in N∼126 neutron-rich nuclei, their inclusion shortens β-decay lifetimes and shifts the abundance peak towards higher masses. Additionally, the inclusion of the β -delayed neutron emission results in a wider abundance peak, and smoothens the mass distribution by removing the odd–even mass staggering. The effects are commonly seen in the results of all adopted astrophysical models. Nevertheless there are quantitative differences, indicating that remaining uncertainty in the determination of half-lives for N=126 nuclei is still significant in order to determine the production of the r-process peak.

    PH Regan, JJ Valiente-Dobon, C Wheldon, CY Wu, JF Smith, AO Macchiavelli, D Cline, RS Chakrawarthy, R Chapman, M Cromaz, P Fallon, SJ Freeman, A Gorgen, W Gelletly, A Hayes, SD Langdown, IY Lee, X Liang, CJ Pearson, Z Podolyak, R Teng, D Ward, DD Warner, AD Yamamoto (2004)Production of exotic nuclear isomers in multi-nucleon transfer reactions, In: LASER PHYSICS LETTERS1(6)pp. 317-324 IOP PUBLISHING LTD
    M Caamano, PM Walker, PH Regan, M Pfutzner, Z Podolyak, J Gerl, M Hellstrom, P Mayet, MN Mineva, A Aprahamian, J Benlliure, AM Bruce, PA Butler, DC Gil, DM Cullen, J Doring, T Enqvist, C Fox, JG Narro, H Geissel, W Gelletly, J Giovinazzo, M Gorska, H Grawe, R Grzywacz, A Kleinbohl, W Korten, M Lewitowicz, R Lucas, H Mach, CD O'Leary, F De Oliveira, CJ Pearson, F Rejmund, M Rejmund, M Sawicka, H Schaffner, C Schlegel, K Schmidt, KH Schmidt, PD Stevenson, C Theisen, F Vives, DD Warner, C Wheldon, HJ Wollersheim, S Wooding, F Xu, O Yordanov (2005)Isomers in neutron-rich A approximate to 190 nuclides from Pb-208 fragmentation, In: EUROPEAN PHYSICAL JOURNAL A23(2)pp. 201-215 SPRINGER
    M Stanoiu, F Azaiez, F Becker, M Belleguic, C Borcea, C Bourgeois, BA Brown, Z Dlouhy, Z Dombradi, Z Fulop, H Grawe, S Grevy, F Ibrahim, A Kerek, A Krasznahorkay, M Lewitowicz, S Lukyanov, H van der Marel, P Mayet, J Mrazek, S Mandal, D Guillemaud-Mueller, F Negoita, YE Penionzhkevich, Z Podolyak, P Roussel-Chomaz, MG Saint Laurent, H Savajols, O Sorlin, G Sletten, D Sohler, J Timar, C Timis, A Yamamoto (2004)Study of drip line nuclei through two-step fragmentation, In: EUROPEAN PHYSICAL JOURNAL A20(1)pp. 95-96
    S Myalski, A Maj, Z Podolyak, F Becker, P Bednarczyk, G Benzoni, B Blank, C Brandau, AM Bruce, L Caceres, F Camera, WN Catford, IJ Cullen, Z Dombradi, P Doornenbal, E Estevez, AB Garnsworthy, H Geissel, W Gelletly, J Gerl, M Corska, H Grawe, J Grebosz, A Heinz, R Hoischen, G Ilie, GA Jones, A Jungclaus, A Kelic, M Kmiecik, I Kojouharov, FG Kondev, T Kurtukian-Nieto, N Kurz, S Lalkovski, Z Liu, F Montes, M Pfuetzner, S Pietri, W Prokopowicz, PH Regan, D Rudolph, T Saito, H Schaffner, S Schwertel, T Shizuma, AJ Simon, SJ Steer, S Tashenov, PM Walker, E Werner-Malento, O Wieland, HJ Wollersheim (2009)ISOMERIC RATIOS FOR NUCLEI WITH Z=62-67 AND A=142-152 PRODUCED IN THE RELATIVISTIC FRAGMENTATION OF Pb-208, In: ACTA PHYSICA POLONICA B40(3)pp. 879-883
    PJR Mason, T Alharbi, PH Regan, N Marginean, Z Podolyak, EC Simpson, N Alkhomashi, PC Bender, M Bowry, M Bostan, D Bucurescu, AM Bruce, G Cata-Danil, I Cata-Danil, R Chakrabarti, D Deleanu, P Detistov, MN Erduran, D Filipescu, U Garg, T Glodariu, D Ghita, SS Ghugre, A Kusoglu, R Marginean, C Mihai, M Nakhostin, A Negret, S Pascu, CR Triguero, T Sava, AK Sinha, L Stroe, G Suliman, NV Zamfir (2012)Half-life of the I-pi=4(-) intruder state in P-34: M2 transition strengths approaching the island of inversion, In: PHYSICAL REVIEW C85(6)ARTN 0pp. ?-? AMER PHYSICAL SOC
    M Gorska, H Grawe, L Caceres, A Algora, M Boehmer, P Boutachkov, K Eppinger, T Faestermann, Y Fujita, A Gadea, A Garnsworthy, W Gelletly, J Gerl, R Gernhaeuser, C Hinke, A Jungclaus, I Kojouharov, R Kruecken, L Maier, P Molina, M Pfuetzner, S Pietri, Z Podolyak, PH Regan, B Rubio, D Rudolph, HJ Wollersheim (2009)NUCLEAR STRUCTURE ADDRESSED AT GSI/RISING, In: INTERNATIONAL JOURNAL OF MODERN PHYSICS E-NUCLEAR PHYSICS18(4)pp. 759-766
    C Yuan, Z Liu, F Xu, PM Walker, Z Podolyak, C Xu, ZZ Ren, B Ding, XY Liu, HS Xu, YH Zhang, XH Zhou, W Zuo (2016)Isomerism in the “south-east” of 132Sn and a predicted neutron-decaying isomer in 129Pd, In: Physics Letters B762pp. 237-242

    Excited states in neutron-rich nuclei located south-east of 132Sn are investigated by shell-model calculations. A new shell-model Hamiltonian is constructed for the present study. The proton–proton and neutron–neutron interactions of the Hamiltonian are obtained through the existing CD-Bonn G matrix results, while the proton–neutron interaction across two major shells is derived from the monopole based universal interaction plus the M3Y spin–orbit force. The present Hamiltonian can reproduce well the experimental data available in this region, including one-neutron separation energies, level energies and the experimental B(E2)B(E2) values of isomers in 134,136,138Sn, 130Cd, and 128Pd. New isomers are predicted in this region, e.g. in 135Sn, 131Cd, 129Pd, 132,134In and 130Ag, in which almost no excited states are known experimentally yet. In the odd–odd 132,134In and 130Ag, the predicted very long E 2 life-times of the low-lying 5−5− states are discussed, demanding more information on the related proton–neutron interaction. The low-lying states of 132In are discussed in connection with the recently observed γ rays. The predicted 19/2−19/2− isomer in 129Pd could decay by both electromagnetic transitions and neutron emission with comparable partial life-times, making it a good candidate for neutron radioactivity, a decay mode which is yet to be discovered.

    SJ Steer, Z Podolyak, S Pietri, M Gorska, H Grawe, KH Maier, PH Regan, D Rudolph, AB Garnsworthy, R Hoischen (2011)Isomeric states observed in heavy neutron-rich nuclei populated in the fragmentation of a (208)Pb beam, In: PHYSICAL REVIEW C84(4)ARTN 0 American Physical Society
    J Agramunt, JL Tain, MB Gomez-Hornillos, AR Garcia, E Albiol, A Algora, R Caballero-Folch, E Calvino, D Cano-Ott, G Cortes, C Domingo-Pardo, T Eronen, W Gelletly, D Gorelov, V Gorlychev, H Hakala, A Jokinen, MD Jordan, A Kankainen, V Kolhinen, L Kucuk, T Martinez, PJR Mason, I Moore, H Penttila, Z Podolyak, C Pretel, M Reponen, A Riego, J Rissanen, B Rubio, A Saastamoinen, A Tarifeno-Saldivia, E Valencia (2016)Characterization of a neutron-beta counting system with beta-delayed neutron emitters, In: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT807pp. 69-78 ELSEVIER SCIENCE BV
    T Alharbi, PH Regan, PJR Mason, N Marginean, Z Podolyak, AM Bruce, EC Simpson, A Algora, N Alazemi, R Britton, MR Bunce, D Bucurescu, N Cooper, D Deleanu, D Filipescu, W Gelletly, D Ghita, T Glodariu, G Ilie, S Kisyov, J Lintott, S Lalkovski, S Liddick, C Mihai, K Mulholland, R Marginean, A Negret, M Nakhostin, CR Nita, OJ Roberts, S Rice, JF Smith, L Stroe, T Sava, C Townsley, E Wilson, V Werner, M Zhekova, NV Zamfir (2013)Electromagnetic transition rates in the N=80 nucleus Ce-138(58), In: PHYSICAL REVIEW C87(1)ARTN 01432 AMER PHYSICAL SOC
    Z Podolyak, PG Bizzeti, AM Bizzeti-Sona, S Lunardi, D Bazzacco, A Dewald, A Algora, G de Angelis, E Farnea, A Gadea, DR Kasemann, T Klug, T Kroll, S Lenzi, DR Napoli, CM Petrache, R Peusquens, CR Alvarez, T Martinez, CA Ur (2003)Lifetime measurements in Gd-148, In: EUROPEAN PHYSICAL JOURNAL A17(1)pp. 29-36 SPRINGER-VERLAG
    NH Medina, JRB Oliveira, EW Cybulska, MN Rao, RV Ribas, MA Rizzutto, WA Seale, FR Espinoza-Quinones, D Bazzacco, F Brandolini, S Lunardi, CM Petrache, Z Podolyak, C Rossi-Alvarez, F Soramel, CA Ur, MA Cardona, G de Angelis, DR Napoli, P Spolaore, A Gadea, D De Acuna, M De Poli, E Farnea, D Foltescu, M Ionescu-Bujor, A Iordachescu (2004)First allowed bandcrossing in neutron deficient nucleus Tb-141, In: BRAZILIAN JOURNAL OF PHYSICS34(3A)pp. 1002-1004
    M Stanoiu, F Azaiez, Z Dombradi, O Sorlin, BA Brown, M Belleguic, D Sohler, MG Saint Laurent, YE Penionzhkevich, G Sletten, C Borcea, C Bourgeois, A Bracco, JM Daugas, Z Dlouhy, C Donzaud, Z Fulop, D Guillemaud-Mueller, S Grevy, F Ibrahim, A Kerek, A Krasznahorkay, M Lewitowicz, S Lukyanov, P Mayet, S Mandal, W Mittig, J Mrazek, F Negoita, F De Oliveira-Santos, Z Podolyak, F Pougheon, P Roussel-Chomaz, H Savajols, Y Sobolev, C Stodel, J Timar, A Yamamoto (2004)Study of neutron rich carbon and oxygen nuclei up to drip line, In: NUCLEAR PHYSICS A746pp. 135C-139C
    AI Morales, J Benlliure, PH Regan, Z Podolyak, M Gorska, N Alkhomashi, S Pietri, R Kumar, E Casarejos, J Agramunt, A Algora, H Alvarez-Pol, G Benzoni, A Blazhev, P Boutachkov, AM Bruce, LS Caceres, IJ Cullen, AMD Bacelar, P Doornenbal, D Dragosavac, ME Estevez, G Farrelly, Y Fujita, AB Garnsworthy, W Gelletly, J Gerl, J Grebosz, R Hoischen, I Kojouharov, N Kurz, S Lalkovski, Z Liu, D Perez-Loureiro, W Prokopowicz, C Mihai, F Molina, D Muecher, B Rubio, H Schapffner, SJ Steer, A Tamii, S Tashenov, JJV Dobon, S Verma, PM Walker, HJ Wollersheim, PJ Woods (2009)beta-DELAYED gamma-RAY SPECTROSCOPY OF HEAVY NEUTRON RICH NUCLEI "SOUTH" OF LEAD, In: ACTA PHYSICA POLONICA B40(3)pp. 867-870
    Z Patel, Z Podolyak, PM Walker, PH Regan, P-A Soederstroem, H Watanabe, E Ideguchi, GS Simpson, S Nishimura, F Browne, R Doornenbal, G Lorusso, S Rice, L Sinclair, T Sumikama, J Wu, ZY Xu, N Aoi, H Baba, FLB Garrote, G Benzoni, R Daido, Z Dombradi, Y Fang, N Fukuda, G Gey, S Go, A Gottardo, N Inabe, T Isobe, D Kameda, K Kobayashi, M Kobayashi, T Komatsubara, I Kojouharov, T Kubo, N Kurz, I Kuti, Z Li, HL Liu, M Matsushita, S Michimasa, C-B Moony, H Nishibata, I Nishizuka, A Odahara, E Sahin, H Sakurai, H Schaffner, H Suzuki, H Takeda, M Tanaka, J Taprogge, Z Vajta, FR Xu, A Yagi, R Yokoyama (2016)Decay spectroscopy of Sm-160: The lightest four-quasiparticle K isomer, In: PHYSICS LETTERS B753pp. 182-186 ELSEVIER SCIENCE BV
    O Izotova, D Rudolph, J Ekman, C Fahlander, A Algora, C Andreoiu, R Cardona, C Chandler, G de Angelis, E Farnea, A Gadea, J Gardes-Narro, J Nyberg, M Palacz, Z Podolyak, T Steinhardt, O Thelen (2004)Survey of E1 Transitions in the Mass A Similar to 60 Region, In: Physical Review C69(3)

    A survey of parity-changing E1 transitions has been pursued in Ngreater than or similar toZ nuclei near Ni-56 using data from an EUROBALL experiment. Linear polarization measurements have been combined with angular correlations of coincident gamma rays to determine the electromagnetic character of numerous transitions. The impact of the results on shell-model parametrizations is briefly discussed.

    H Watanabe, K Asahi, T Kishida, H Ueno, W Sato, A Yoshimi, Y Kobayashi, D Kameda, H Miyoshi, T Fukuchi, Y Wakabayashi, T Sasaki, M Kibe, N Hokoiwa, A Odahara, B Cederwall, K Lagergren, Z Podolyak, M Ishihara, Y Gono (2004)Application of the high-spin isomer beams to the secondary fusion reaction and the measurement of g-factor, In: NUCLEAR PHYSICS A746pp. 540C-543C
    AMD Bacelar, AM Bruce, Z Podolyak, S Lalkovski, S Pietri, N Al-Dahan, M Gorska, A Algora, N Alkhomashi, J Benlliure, P Boutachkov, A Bracco, E Calore, E Casarejos, IJ Cullen, AY Deo, P Detistov, Z Dombradi, C Domingo-Pardo, M Doncel, F Farinon, GF Farrelly, H Geissel, W Gelletly, J Gerl, N Goel, J Grebosz, R Hoischen, I Kojouharov, N Kurz, S Leoni, F Molina, AI Morales, D Montanari, A Musumarra, R Nicolini, DR Napoli, C Nociforo, A Prochazka, W Prokopowicz, PH Regan, B Rubio, D Rudolph, S Verma, SJ Steer, P Strmen, TPD Swan, I Szarka, JJ Valiente-Dobon, PM Walker, H Weick, HJ Wollersheim (2009)ANGULAR MOMENTUM POPULATION IN FRAGMENTATION REACTIONS, In: ACTA PHYSICA POLONICA B40(3)pp. 889-892
    A Gottardo, JJ Valiente-Dobón, G Benzoni, R Nicolini, JA Núñez, A Algora, N Al-Dahan, GD Angelis, Y Ayyad, N Alkhomashi, PRP Allegro, J Benlliure, P Boutachkov, M Bowry, A Bracco, AM Bruce, M Bunce, E Casarejos, L Cortes, FCL Crespi, F Camera, A Corsi, AMD Bacelar, A Deo, C Domingo-Pardo, M Doncel, Z Dombradi, T Engert, K Eppinger, GF Farrelly, F Farinon, A Gadea, H Geissel, J Gerl, N Goel, M Górska, J Grebosz, E Gregor, T Haberman, R Hoischen, R Janik, S Klupp, I Kojouharov, N Kurz, S Leoni, S Lunardi, S Mandal, R Menegazzo, D Mengoni, B Million, DR Napoli, F Naqvi, C Nociforo, M Pfützner, S Pietri, Z Podolyak, A Prochazka, W Prokopowicz, F Recchia, RV Ribas, MW Reed, PH Regan, D Rudolph, E Sahin, H Schaffner, A Sharma, B Sitar, D Siwal, K Steger, P Strmen, TPD Swan, I Szarka, PM Walker, O Wieland, H Weick, H-J Wollersheim (2011)Isomers in neutron-rich lead isotopes populated via the fragmentation of 238U at 1 GeV A, In: Journal of Physics: Conference Series: International Nuclear Physics Conference312(Sectio)pp. 092019-?

    Neutron-rich nuclei beyond N = 126 in the lead region were populated by fragmenting a 238U beam at 1 GeV A on a Be target and then separated by the Fragment Separator (FRS) at GSI. Their isomeric decays were observed, enabling study of the shell structure of neutron-rich nuclei around the Z=82 shell closure. Some preliminary results are reported in this paper.

    CB Hinke, M Boehmer, P Boutachkov, T Faestermann, H Geissel, J Gerl, R Gernhaeuser, M Gorska, A Gottardo, H Grawe, JL Grebosz, R Kruecken, N Kurz, Z Liu, L Maier, F Nowacki, S Pietri, Z Podolyak, K Sieja, K Steiger, K Straub, H Weick, H-J Wollersheim, PJ Woods, N Al-Dahan, N Alkhomashi, A Atac, A Blazhev, NF Braun, IT Celikovic, T Davinson, I Dillmann, C Domingo-Pardo, PC Doornenbal, G de France, GF Farrelly, F Farinon, N Goel, TC Habermann, R Hoischen, R Janik, M Karny, A Kaskas, IM Kojouharov, T Kroell, Y Litvinov, S Myalski, F Nebel, S Nishimura, C Nociforo, J Nyberg, AR Parikh, A Prochazka, PH Regan, C Rigollet, H Schaffner, C Scheidenberger, S Schwertel, P-A Soederstroem, SJ Steer, A Stolz, P Strmen (2012)Superallowed Gamow-Teller decay of the doubly magic nucleus Sn-100, In: NATURE486(7403)pp. 341-345 NATURE PUBLISHING GROUP
    A. Frotscher, M. Gomez-Ramos, A. Obertelli, P. Doornenbal, G. Authelet, H. Baba, D. Calvet, F. Chateu, S. Chen, A. Corsi, A. Delbart, J.M Gheller, A. Giagnon, A. Gillibert, T. Isobe, V. Lapoux, M. Matsushita, S. Momiyama, T. Motobayashi, M. Niikura, H. Otsu, N. Paul, C. Peron, A. Peyaud, E.C Pollacco, J.Y Rousse, H. Sakurai, C. Santamaria, M. Sasano, Y. Shiga, N. Shimizu, D. Steppenbeck, S. Takeuchi, R. Taniuchi, T. Uesaka, H. Wang, K. Yoneda, T. Ando, T. Arici, A. Blazhev, F. Browne, A.M Bruce, R. Carroll, L.X Chung, M.L Cortes, M. Dewald, B. Ding, Zs Dombradi, F. Flavigny, S. Franchoo, F. Giacoppo, M. Gorska, A. Gottardo, K. Hadynska-Klek, Z. Korkulu, S. Koyama, Y. Kubota, A. Jungeclaus, J. Lee, M. Lettmann, B.D Linh, J. Liu, Z. Liu, C. Lizarazo, C. Louchart, R. Lozeva, K. Matsui, T. Miyazaki, K. Moschner, S. Nagamine, N. Nakatsuka, C. Nita, S. Nishimura, C.R Nobs, L. Olivier, S. Ota, Z. Patel, Zs. Podolyak, M. Rudigier, E. Sahin, T.Y Saito, C. Shand, P.A Söderström, I.G Stefan, T. Sumikama, D. Suzuki, R. Orlandi, V. Vaquero, Zs Vajta, V. Werner, K. Wimmer, J. Wu, Z. Xu (2020)Sequential nature of (p; 3p) two-proton knockout from neutron-rich nuclei, In: Physical Review Letters American Physical Society

    Twenty-one two-proton knockout (p; 3p) cross sections from neutron-rich nuclei at ~ 250 MeV/nucleon were measured. For the first time, the angular distribution of the three emitted protons were measured in coincidence with the tracker and hydrogen target MINOS, demonstrating that the (p; 3p) kinematics is consistent with two sequential proton-proton collisions within the projectile nucleus. Ratios of (p; 3p) over (p; 2p) inclusive cross sections follow the trend of other many-proton (neutron) removal reactions, further reinforcing the sequential nature of (p; 3p) in neutron-rich nuclei.

    D.A. Nesterenko, A. Kankainen, J. Kostensalo, C.R. Nobs, A.M. Bruce, O. Beliuskina, L. Canete, T. Eronen, E.R. Gamba, S. Geldhof, R. de Groote, A. Jokinen, J. Kurpeta, I.D. Moore, L. Morrison, Zs. Podolyak, I. Pohjalainen, S. Rinta-Antila, A. de Roubin, M. Rudigier, J. Suhonen, M. Vilén, V. Virtanen, J. Äystö (2020)Three beta-decaying states in 128In and 130In resolved for the first time using Penning-trap techniques, In: Physics Letters B135642 Elsevier

    Isomeric states in 128In and 130In have been studied with the JYFLTRAP Penning trap at the IGISOL facility. By employing state-of-the-art ion manipulation techniques, three different beta-decaying states in 128In and 130In have been separated and their masses measured. JYFLTRAP was also used to select the ions of interest for identification at a post-trap decay spectroscopy station. A new beta-decaying high-spin isomer feeding the isomer in 128Sn has been discovered in 128In at 1797.6(20) keV. Shell-model calculations employing a CD-Bonn potential re-normalized with the perturbative G-matrix approach suggest this new isomer to be a 16⁺ spin-trap isomer. In 130In, the lowest-lying (10⁻) isomeric state at 58.6(82) keV was resolved for the first time using the phase-imaging ion cyclotron resonance technique. The energy difference between the 10⁻ and 1⁻ states in 130In, stemming from parallel/antiparallel coupling of (π0g-19/2) ⊗ (v0h-111/2), has been found to be around 200 keV lower than predicted by the shell model. Precise information on the energies of the excited states determined in this work is crucial for producing new improved effective interactions for the nuclear shell model description of nuclei near 132Sn.

    Z Podolyak, PH Regan, M Pfutzner, J Gerl, M Hellstrom, M Caamano, P Mayet, C Schlegel, A Aprahamian, J Benlliure, AM Bruce, PA Butler, DC Gil, DM Cullen, J Doring, T Enqvist, F Rejmund, C Fox, JG Narro, H Geissel, W Gelletly, J Giovinazzo, M Gorska, H Grawe, R Grzywacz, A Kleinbohl, W Korten, M Lewitowicz, R Lucas, H Mach, M Mineva, CD O'Leary, F De Oliveira, CJ Pearson, M Rejmund, M Sawicka, H Schaffner, K Schmidt, C Theisen, PM Walker, DD Warner, C Wheldon, HJ Wollersheim, SC Wooding, FR Xu (2000)Isomer spectroscopy of neutron rich W-190(116), In: PHYSICS LETTERS B491(3-4)pp. 225-231 ELSEVIER SCIENCE BV
    T Sumikama, K Yoshinaga, H Watanabe, S Nishimura, Y Miyashita, K Yamaguchi, K Sugimoto, J Chiba, Z Li, H Baba, JS Berryman, N Blasi, A Bracco, F Camera, P Doornenbal, S Go, T Hashimoto, S Hayakawa, C Hinke, E Ideguchi, T Isobe, Y Ito, DG Jenkins, Y Kawada, N Kobayashi, Y Kondo, R Kruecken, S Kubono, G Lorusso, T Nakano, M Kurata-Nishimura, A Odahara, HJ Ong, S Ota, Z Podolyak, H Sakurai, H Scheit, K Steiger, D Steppenbeck, S Takano, A Takashima, K Tajiri, T Teranishi, Y Wakabayashi, PM Walker, O Wieland, H Yamaguchi (2011)Structural Evolution in the Neutron-Rich Nuclei Zr-106 and Zr-108, In: PHYSICAL REVIEW LETTERS106(20)ARTN 2pp. ?-? AMER PHYSICAL SOC
    S Mohammadi, G De Angelis, M Axiotis, D Bazzacco, PG Bizzeti, F Brandolini, R Broda, D Bucurescu, E Farnea, W Gelletly, A Gadea, M Ionescu-Bujor, A Iordachescu, T Kroll, S Longdown, S Lunardi, N Marginean, T Martinez, N Medina, Z Podolyak, B Quintana, PH Regan, B Rubio, CA Ur, J-JV Dobon, PM Walker, YH Zhang (2006)Yrast states in Os-188,Os-190 nuclei, In: INTERNATIONAL JOURNAL OF MODERN PHYSICS E-NUCLEAR PHYSICS15(8)pp. 1797-1802
    K. A. Gladnishki, Zs. Podolyák, P. H. Regan, J. Gerl, M. Hellström, Y. Kopatch, S. Mandal, M. Górska, R. D. Page, H. J. Wollersheim, A. Banu, G. Benzoni, H. Boardman, M. La Commara, J. Ekman, C. Fahlander, H. Geissel, H. Grawe, E. Kaza, A. Korgul, M. Matos, M. N. Mineva, C. J. Pearson, C. Plettner, D. Rudolph, Ch. Scheidenberger, K. -H. Schmidt, V. Shishkin, D. Sohler, K. Sümmerer, J. J. Valiente-Dobón, P. M. Walker, H. Weick, M. Winkler, O. Yordanov (2004)Angular momentum population in the projectile fragmentation of 238U at 750 MeV/nucleon, In: Physical Review C69(024617)
    DM Cullen, LK Pattison, JF Smith, AM Fletcher, PM Walker, HM El-Masri, Z Podolyak, RJ Wood, C Scholey, C Wheldon, G Mukherjee, D Balabanski, M Djongolov, T Dalsgaard, H Thisgaard, G Sletten, F Kondev, D Jenkins, GD Dracoulis, GJ Lane, IY Lee, AO Macchiavelli, F Xu (2003)High-spin states, lifetime measurements and isomers in Os-181, In: NUCLEAR PHYSICS A728(3-4)pp. 287-338 ELSEVIER SCIENCE BV
    G. Fruet, S. Courtin, M. Heine, D. G. Jenkins, P. Adsley, A. Brown, R. Canavan, W. N. Catford, E. Charon, D. Curien, S. Della Negra, J. Duprat, F. Hammache, J. Lesrel, G. Lotay, A. Meyer, D. Montanari, L. Morris, M. Moukaddam, J. Nippert, Zs. Podolyak, P. H. Regan, I. Ribaud, M. Richer, M. Rudigier, R. Shearman, N. de Séréville, C. Stodel (2020)Advances in the Direct Study of Carbon Burning in Massive Stars, In: Physical Review Letters124192701 American Physical Society

    The 12C + 12C fusion reaction plays a critical role in the evolution of massive stars and also strongly impacts various explosive astrophysical scenarios. The presence of resonances in this reaction at energies around and below the Coulomb barrier makes it impossible to carry out a simple extrapolation down to the Gamow window—the energy regime relevant to carbon burning in massive stars. The 12C + 12C system forms a unique laboratory for challenging the contemporary picture of deep sub-barrier fusion (possible sub-barrier hindrance) and its interplay with nuclear structure (sub-barrier resonances). Here, we show that direct measurements of the 12C + 12C fusion cross section may be made into the Gamow window using an advanced particle-gamma coincidence technique. The sensitivity of this technique effectively removes ambiguities in existing measurements made with gamma ray or charged-particle detection alone. The present cross-section data span over 8 orders of magnitude and support the fusion-hindrance model at deep sub-barrier energies.

    YH Zhang, ML Liu, G de Angelis, Z Podolyak, WT Guo, A Gadea, C Ur, N Marginean, C Rusu, R Schwengner, DR Napoli, R Menegazzo, S Lunardi, D Bazzacco, T Martinez, M Axiotis, A Gargano, SM Lenzi, F Brandolini, W von Oertzen (2004)Level scheme of Mo-94 at high angular momentum, In: HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION28(9)pp. 941-946 SCIENCE CHINA PRESS
    J Jolie, JM Régis, D Wilmsen, S Ahmed, M Pfeiffer, N Saed-Samii, N Warr, A Blanc, M Jentschel, U Köster, P Mutti, T Soldner, G Simpson, G De France, W Urban, AM Bruce, OJ Roberts, LM Fraile, V Paziy, A Ignatov, S Ilieva, T Kröll, M Scheck, M Thürauf, D Ivanova, S Kisyov, S Lalkovski, Z Podolyak, PH Regan, W Korten, D Habs, PG Thirolf, CA Ur (2014)First results of the (n,γ) EXILL campaigns at the Institut Laue Langevin using EXOGAM and FATIMA, In: Journal of Physics: Conference Series533(1)

    At the PF1B cold neutron beam line at the Institut Laue Langevin the EXILL array consisting of EXOGAM, GASP and LOHENGRIN detectors was used to perform (n,γ) measurements under very high coincidence rates. About ten different reactions were then measured in autumn 2012. In spring 2013 the EXOGAM array was combined with 16 LaBr3(Ce) scintillators in the FATIMA@EXILL campaign for the measurement of lifetimes using the generalised centroid difference method. We report on the properties of both set-ups and present first results on Pt isotopes from both campaigns.

    JN Orce, AM Bruce, A Emmanouilidis, C Wheldon, FR Xu, PM Walker, M Caamano, Z Podolyak, H El-Masri, PD Stevenson, AP Byrne, GD Dracoulis, JC Hazel, T Kibedi, DM Cullen (2003)Interplay between K-isomerism and gamma-softness in Xe-128, In: ACTA PHYSICA POLONICA B34(4)pp. 2253-2256
    R Caballero-Folch, C Domingo-Pardo, J Agramunt, A Algora, F Ameil, Y Ayyad, J Benlliure, M Bowry, F Calvino, D Cano-Ott, G Cortes, T Davinson, I Dillmann, A Estrade, A Evdokimov, T Faestermann, F Farinon, D Galaviz, AR Garcia, H Geissel, William Gelletly, R Gernhauser, MB Gomez-Hornillos, C Guerrero, M Heil, C Hinke, R Knobel, I Kojouharov, J Kurcewicz, N Kurz, Yu A Litvinov, L Maier, J Marganiec, M Marta, T Martinez, F Montes, I Mukha, DR Napoli, C Nociforo, C Paradela, S Pietri, Zsolt Podolyak, A Prochazka, S Rice, A Riego, B Rubio, H Schaffner, Ch Scheidenberger, K Smith, E Sokol, K Steiger, B Sun, JL Tain, M Takechi, D Testov, H Weick, E Wilson, JS Winfield, Rachael Wood, PJ Woods, A Yeremin (2017)Beta-decay half-lives and Beta-delayed neutron emission probabilities for several isotopes of Au, Hg, Tl, Pb and Bi, beyond N=126, In: PHYSICAL REVIEW C95(6)064322 AMER PHYSICAL SOC

    Background: Previous measurements of Beta-delayed neutron emitters comprise around 230 nuclei, spanning from the 8He up to 150La. Apart from 210Tl, with a minuscule branching ratio of 0.07%, no other neutron emitter is measured yet beyond A = 150. Therefore new data are needed, particularly in the heavy mass region around N=126, in order to guide theoretical models and to understand the formation of the third r-process peak at A 195. Purpose: To measure both, Beta-decay half-lives and neutron branching ratios of several neutron-rich Au, Hg, Tl, Pb and Bi isotopes beyond N = 126. Method: Ions of interest are produced by fragmentation of a 238U beam, selected and identifed via the GSI-FRS fragment separator. A stack of segmented silicon detectors (SIMBA) is used to measure ion-implants and -decays. An array of 30 3He tubes embedded in a polyethylene matrix (BELEN) is used to detect neutrons with high efficiency and selectivity. A self-triggered digital system is employed to acquire data and to enable time-correlations. The latter are analyzed with an analytical model and results for the half-lives and neutron-branching ratios are derived using the binned Maximum-Likelihood method. Results: Twenty new Beta-decay half-lives are reported for 204

    P. Napiralla, M. Lettmann, C. Stahl, G. Rainovski, N. Pietralla, S. Afara, F. Ameil, T. Arici, S. Aydin, D. Barrientos, P. Bednarczyk, M. A. Bentley, G. Benzoni, B. Birkenbach, A. Blazhev, A. J. Boston, P. Boutachkov, A. Bracco, B. Bruyneel, E. Clément, M. L. Cortés, F. C. L. Crespi, D. M. Cullen, D. Curien, P. Désesquelles, F. Didierjean, C. Domingo-Pardo, G. Duchêne, J. Eberth, H. Egger, C. Fahlander, J. Gerl, K. A. Gladnishki, P. Golubev, V. González, M. Górska, A. Gottardo, L. Grassi, T. Habermann, L. J. Harkness-Brennan, H. Hess, D. G. Jenkins, P. R. John, J. Jolie, D. S. Judson, I. Kojouharov, W. Korten, M. Labiche, N. Lalović, C. Lizarazo, C. Louchart-Henning, A. Maj, R. Menegazzo, D. Mengoni, E. Merchan, B. Million, O. Möller, T. Möller, K. Moschner, V. Modamio, D. Napoli, B. S. Nara Singh, Zs. Podolyak, S. Pietri, D. Ralet, M. Reese, P. Reiter, D. Rudolph, E. Sanchis, L. G. Sarmiento, H. Schaffner, J. Simpson, P. P. Singh, J. J. Valiente-Dobón, V. Werner, O. Wieland (2020)Benchmarking the PreSPEC@GSI experiment for Coulex-multipolarimetry on the π(p3/2) → π(p1/2) spin-flip transition in 85Br, In: The European Physical Journal A56(5) EDP Sciences

    A first performance test of the Coulomb excitation multipolarimetry (Coulex-multipolarimetry) method is presented. It is based on a 85Br π(p3/2) → π(p1/2) spin-flip experiment performed as part of the PreSPEC-AGATA campaign at the GSI Helmholtzzentrum für Schwerionenforschung (GSI). Via determination of background levels around the expected 85Br excitations as well as measured 197Au excitations, an upper limit for the M1 transition strength of the 1/2⁻₁ → 3/2⁻g.s. transition in 85Br and a lower beam time limit for upcoming experimental campaigns utilizing Coulex-multipolarimetry have been inferred. The impact of the use of AGATA in its anticipated 1π configuration on these estimates is deduced via Geant4 simulations.

    C Wheldon, JG Narro, CJ Pearson, PH Regan, Z Podolyak, DD Warner, P Fallon, AO Macchiavelli, M Cromaz (2001)Yrast states in Os-194: The prolate-oblate transition region, In: PHYSICAL REVIEW C63(1)ARTN 01130 AMERICAN PHYSICAL SOC
    A. Goldkuhle, C. Fransen, A. Blazhev, M. Beckers, B. Birkenbach, T. Braunroth, E. Clément, A. Dewald, J. Dudouet, J. Eberth, H. Hess, B. Jacquot, J. Jolie, Y.-H. Kim, A. Lemasson, S. M. Lenzi, H. J. Li, J. Litzinger, C. Michelagnoli, C. Müller-Gatermann, R. M. Perez-Vidal, D. Ralet, P. Reiter, M. Rejmund, A. Vogt, N. Warr, K. O. Zell, N. Alahari, A. Ataç, D. Barrientos, C. Barthe-Dejean, G. Benzoni, A. J. Boston, H. C. Boston, P. Bourgault, I. Burrows, J. Cacitti, B. Cederwall, M. Ciemala, D.M. Cullen, G. De France, C. Domingo-Pardo, F. J. Egea Canet, J. L. Egido, J.-L. Foucher, G. Fremont, A. Gadea, P. Gangnant, V. González, J. Goupil, C. Henrich, C. Houarner, M. Jean, D. S. Judson, A. Korichi, W. Korten, A. Lefevre, L. Legeard, F. Legruel, S. Leoni, J. Ljungvall, A. Maj, C. Maugeais, L. Ménager, N. Ménard, R. Menegazzo,, D. Mengoni, B. Million, H. Munoz, B. S. Nara Singh, D. R. Napoli, J. Nyberg, M. Ozille, Zs. Podolyak, A. Pullia, B. Raine, F. Recchia, J. Ropert, F. Saillant, M. D. Salsac, E. Sanchis, C. Schmitt, J. Simpson, C. Spitaels, O. Stezowski, Ch. Theisen, M. Toulemonde, M. Tripon, J.-J. Valiente Dobón, G. Voltolini, M. Zielinska (2019)Measurements of transition probabilities in 52;54Ti to probe shell evolution toward N = 32, In: Physical Review C100(5)054317 The American Physical Society

    Transition probabilities from lifetimes of excited states in neutron-rich nuclei 52;54Ti, produced in a multinucleon-transfer reaction, were measured employing the recoil distance Doppler-shift (RDDS) method. The experiment was performed at the Grand Accélérateur National d’Ions Lourds (GANIL) facility by using the Advanced Gamma Tracking Array (AGATA) for the γ- ray detection and the Cologne plunger device for deep inelastic reactions, coupled to the large-acceptance variable mode spectrometer (VAMOS++) for an event-by-event particle identification. The aim was the investigation of the evolution of the shell structure in the vicinity of the N = 32 subshell. Level lifetimes and lifetime limits of the 2+1 to 8+1 states of the yrast bands in 52;54Ti are determined. The obtained transition probabilities are compared to shell-model calculations based on established fp shell interactions.

    P-A Soederstroem, PH Regan, PM Walker, H Watanabe, P Doornenbal, Z Korkulu, P Lee, HL Liu, JJ Liu, G Lorusso, S Nishimura, T Sumikama, VH Phong, J Wu, FR Xu, A Yagi, GX Zhang, T Alharbi, H Baba, F Browne, AM Bruce, R Carroll, KY Chae, Z Dombradi, A Estrade, N Fukuda, C Griffin, E Ideguchi, N Inabe, T Isobe, H Kanaoka, I Kojouharov, FG Kondev, T Kubo, S Kubono, N Kurz, I Kuti, S Lalkovski, GJ Lane, CS Lee, EJ Lee, G Lotay, C-B Moon, I Nishizuka, CR Nita, A Odahara, Z Patel, Z Podolyak, OJ Roberts, H Sakurai, H Schaffner, CM Shand, H Suzuki, H Takeda, S Terashima, Z Vajta, JJ Valiente-Dobon, ZY Xu, S Yoshida (2015)Heavy Rotation - Evolution of quadrupole collectivity centred at the neutron-rich doubly mid-shell nucleus Dy-170, In: NUCLEAR STRUCTURE AND DYNAMICS '151681
    R. Broda, Ł. W. Iskra, R. V. F. Janssens, B. A. Brown, B. Fornal, J. Wrzesiński, N. Cieplicka-Oryńczak, M. P. Carpenter, C. J. Chiara, C. R. Hoffman, F. G. Kondev, G. J. Lane, T. Lauritsen, Zs. Podolyak, D. Seweryniak, W. B. Walters, S. Zhu (2018)Two-neutron and core-excited states in Pb210 : Tracing E3 collectivity and evidence for a new β -decaying isomer in Tl210, In: Physical Review C98(2)024324 American Physical Society

    Yrast and near-yrast levels up to an I=17ℏ spin value and a 6-MeV excitation energy have been delineated in the “two-neutron” 210Pb nucleus following deep-inelastic reactions involving 208Pb targets and a number of heavy-ion beams at energies ∼25% above the Coulomb barrier. The level scheme was established on the basis of multifold prompt and delayed coincidence relationships measured with the Gammasphere array. In addition to the previously known states, many new levels were identified. For most of the strongly populated states, spin-parity assignments are proposed on the basis of angular distributions. The reinvestigation of the ν(g9/2)2, 8+ isomeric decay results in the firm identification of the low-energy E2 transitions involved in the 8+→6+→4+ cascade, and in a revised 6+ level half-life of 92(10) ns, nearly a factor of 2 longer than previously measured. Among the newly identified states figure spin I=4–10ℏ levels associated with the νg9/2i11/2 multiplet, as well as yrast states involving νg9/2j15/2, νi11/2j15/2, and ν(j15/2)2 neutron couplings. The highest-spin excitations are understood as 1p−1h core excitations and the yrast population is found to be fragmented to the extent that levels of spin higher than I=17ℏ could not be reached. Four E3 transitions are present in the 210Pb yrast decay; three of these involve the g9/2→j15/2 octupole component, as reflected in the 21(2) and >10 Weisskopf unit enhancements of the B(E3) rates of the first two. The fourth, 16+→13−E3 transition corresponds to the 3− core octupole excitation built on the νi11/2j15/2 state, in analogy to a similar E3 coupling to the νj15/2 level in 209Pb. Shell-model calculations performed for two-neutron states and 1p−1h 208Pb core excitations are in good agreement with the data. Evidence was found for the existence of a hitherto unknown high-spin β-decaying isomer in 210Tl. Shell-model calculations of the 210Tl levels suggest the possibility of a 11+ long-lived, β-decaying state, and the delayed yields observed in various reactions fit rather well with a 210Tl assignment.

    SJ Steer, Z Podolyak, S Pietri, PH Regan, D Rudolph, E Werner-Malento, AB Garnsworthy, R Hoischen, M Gorska, J Gerl, HJ Wollersheim, F Becker, P Bednarczyk, L Caceres, P Doornenbal, H Geissel, J Grebosz, A Kelic, N Kurz, F Montes, W Prokopowicz, T Saito, H Schaffner, S Tachenov, A Heinz, M Pfuetzner, T Kurtukian-Nieto, G Benzoni, A Jungclaus, DL Balabanski, C Brandau, AM Bruce, WN Catford, IJ Cullen, Z Dombradi, E Estevez, W Gelletly, G Ilie, J Jolie, GA Jones, M Kmiecik, FG Kondev, S Lalkovski, Z Liu, A Maj, S Myalski, T Shizuma, S Schwertel, PM Walker, O Wieland (2007)Identification of isomeric states 'south' of Pb-208 via projectile fragmentation, In: ACTA PHYSICA POLONICA B38(4)pp. 1283-1286
    M. Heine, S. Courtin, G. Fruet, D.G. Jenkins, L. Morris, D. Montanari, M. Rudigier, P. Adsley, D. Curien, S. Della Negra, J. Lesrel, C. Beck, L. Charles, P. Dené, F. Haas, F. Hammache, G. Heitz, M. Krauth, A. Meyer, Zs. Podolyak, P.H. Regan, M. Richer, N. de Séréville, C. Stodel (2018)The STELLA apparatus for particle-Gamma coincidence fusion measurements with nanosecond timing, In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment903pp. 1-7 Elsevier

    The STELLA (STELlar LAboratory) experimental station for the measurement of deep sub-barrier light heavy-ion fusion cross sections has been installed at the Andromède accelerator at the Institut de Physique Nucléaire, Orsay (France). The setup is designed for the direct experimental determination of heavy-ion fusion cross sections as low as tens of picobarn. The detection concept is based on the coincident measurement of emitted gamma rays with the UK FATIMA (FAst TIMing Array) and evaporated charged particles using a silicon detector array. Key developments relevant to reaching the extreme sub-barrier fusion region are a rotating target mechanism to sustain beam intensities above 10μA, an ultra-high vacuum of 10−8 mbar to prevent carbon built-up and gamma charged-particle timing in the order of nanoseconds sufficient to separate proton and alpha particles.

    Z Podolyak, PM Walker, H Mach, G de France, G Sletten, F Azaiez, JM Casandjian, B Cederwall, DM Cullen, Z Dombradi, GD Dracoulis, LM Fraile, S Franchoo, H Fynbo, M Gorska, Y Kopatch, GJ Lane, S Mandal, L Milechina, J Molnar, C O'Leary, W Plociennik, V Pucknell, P Raddon, N Redon, E Ruchowska, M Stanoiu, O Tengblad, C Wheldon, R Wood (2003)gamma-ray spectroscopy with a He-8 beam, In: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT511(3)pp. 354-359 ELSEVIER SCIENCE BV
    JL Tain, A Algora, J Agramunt, V Guadilla, MD Jordan, A Montaner-Piza, B Rubio, E Valencia, D Cano-Ott, W Gelletly, T Martinez, E Mendoza, Z Podolyak, P Regan, J Simpson, AJ Smith, J Strachan (2015)A decay total absorption spectrometer for DESPEC at FAIR, In: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT803pp. 36-46 ELSEVIER SCIENCE BV
    PH Regan, AB Garnsworthy, S Pietri, L Caceres, M Gorska, D Rudolph, Z Podolyak, SJ Steer, R Hoischen, J Gerl, HJ Wollersheim, J Grebosz, H Schaffner, W Prokopwicz, I Kojouharov, F Becker, P Bednarczyk, P Doornenball, H Geissel, H Grawe, A Kelic, N Kurz, F Montes, T Saito, S Tashenov, E Werner-Malento, A Heinz, L Atanasova, D Balabanski, G Benzoni, B Blank, A Blazhev, C Brandau, AM Bruce, F Camera, IJ Cullen, ME Estevez, C Fahlander, W Gelletly, G Ilie, A Jungclaus, J Jolie, T Kurtukian-Nieto, Z Liu, M Kmiecik, A Maj, S Myalski, S Schwertel, T Shizuma, AJ Simons, PM Walker, O Wieland (2007)Isomer spectroscopy using relativistic projectile fragmentation at the N=Z line for A similar to 80 -> 90., In: NUCLEAR PHYSICS A787pp. 491C-498C ELSEVIER SCIENCE BV

    The preliminary results from the RISING Stopped Beam Isomer Campaign are presented, with specific focus on results of the initial experiment to investigate isomeric decays along the N=Z line around A similar to 80-90 following the projectile fragmentation of a Ag-107 primary beam at an energy of 750 MeV per nucleon. A description of the technical aspects behind the design of the RISING array is presented, together with evidence for previously unreported isomeric decays in Tc-87,Tc-88 and the N=Z nuclei Nb-82(41) and Tc-86(43).

    R Kumar, FG Molina, S Pietri, E Casarejos, A Algora, J Benlliure, P Doornenbal, J Gerl, M Gorska, I Kojouharov, Z Podolyak, W Prokopowicz, PH Regan, B Rubio, H Schaffner, S Tashenov, H-J Wollersheim (2009)Testing of a DSSSD detector for the stopped RISING project, In: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT598(3)pp. 754-758 ELSEVIER SCIENCE BV
    JL Tain, E Valencia, A Algora, J Agramunt, B Rubio, S Rice, W Gelletly, P Regan, A-A Zakari-Issoufou, M Fallot, A Porta, J Rissanen, T Eronen, J Aysto, L Batist, M Bowry, VM Bui, R Caballero-Folch, D Cano-Ott, V-V Elomaa, E Estevez, GF Farrelly, AR Garcia, B Gomez-Hornillos, V Gorlychev, J Hakala, MD Jordan, A Jokinen, VS Kolhinen, FG Kondev, T Martinez, E Mendoza, I Moore, H Penttila, Z Podolyak, M Reponen, V Sonnenschein, AA Sonzogni (2015)Enhanced gamma-Ray Emission from Neutron Unbound States Populated in beta Decay, In: PHYSICAL REVIEW LETTERS115(6)ARTN 06250 AMER PHYSICAL SOC
    R Caballero-Folch, C Domingo-Pardo, G Cortes, JL Tain, J Agramunt, A Algora, F Ameil, Y Ayyad, J Benlliure, M Bowry, F Calvino, D Cano-Ott, T Davinson, I Dillmann, A Estrade, A Evdokimov, T Faestermann, F Farinon, D Galaviz, A Garcia-Rios, H Geissel, W Gelletly, R Gernhauser, MB Gomez-Hornillos, C Guerrero, M Heil, C Hinke, R Knobel, I Kojouharov, J Kurcewicz, N Kurz, Y Litvinov, L Maier, J Marganiec, M Marta, T Martinez, F Montes, I Mukha, DR Napoli, C Nociforo, C Paradela, S Pietri, Z Podolyak, A Prochazka, S Rice, A Riego, B Rubio, H Schaffner, C Scheidenberger, K Smith, E Sokol, K Steiger, B Sun, M Takechi, D Testov, H Weick, E Wilson, JS Winfield, R Wood, PJ Woods, A Yeremin (2014)beta-decay and beta-delayed Neutron Emission Measurements at GSI-FRS Beyond N=126, for r-process Nucleosynthesis, In: NUCLEAR DATA SHEETS120pp. 81-83 ACADEMIC PRESS INC ELSEVIER SCIENCE
    S Calinescu, L Caceres, S Grevy, O Sorlin, D Sohler, M Stanoiu, F Negoita, E Clement, R Astabatyan, C Borcea, R Borcea, M Bowry, W Catford, Z Dombradi, S Franchoo, R Garcia, R Gillibert, H Guerin, JC Thomas, I Kuti, S Lukyanov, A Lepailleur, V Maslov, P Morfouace, J Mrazek, M Niikura, L Perrot, Z Podolyak, C Petrone, Y Penionzhkevich, T Roger, F Rotaru, I Stefan, Z Vajta, E Wilson (2014)STUDY OF THE NEUTRON-RICH ISOTOPE Ar-46 THROUGH INTERMEDIATE ENERGY COULOMB EXCITATION, In: ACTA PHYSICA POLONICA B45(2)pp. 199-204
    G Guastalla, DD Dijulio, M Górska, J Cederkäll, P Boutachkov, P Golubev, S Pietri, H Grawe, F Nowacki, A Algora, F Ameil, T Arici, A Atac, MA Bentley, A Blazhev, D Bloor, S Brambilla, N Braun, F Camera, CD Pardo, A Estrade, F Farinon, J Gerl, N Goel, J Grbosz, T Habermann, R Hoischen, K Jansson, J Jolie, A Jungclaus, I Kojouharov, R Knoebel, R Kumar, J Kurcewicz, N Kurz, N Lalović, E Merchan, K Moschner, F Naqvi, BSN Singh, J Nyberg, C Nociforo, A Obertelli, M Pfützner, N Pietralla, Z Podolyák, A Prochazka, D Ralet, P Reiter, D Rudolph, H Schaffner, F Schirru, L Scruton, T Swaleh, J Taprogge, R Wadsworth, N Warr, H Weick, A Wendt, O Wieland, JS Winfield, HJ Wollersheim (2014)Analysis and results of the 104Sn Coulomb excitation experiment, In: Journal of Physics: Conference Series533(1)

    The analysis of the Coulomb excitation experiment conducted on 104Sn required a strict selection of the data in order to reduce the large background present in the γ-ray energy spectra and identify the γ-ray peak corresponding to the Coulomb excitation events. As a result the B(E2; 0+→ 2+) value could be extracted, which established the downward trend towards 100Sn and therefore the robustness of the N=Z=50 core against quadrupole excitations.

    A Gottardo, JJ Valiente-Dobon, G Benzoni, S Lunardi, A Gadea, A Algora, N Al-Dahan, G de Angelis, Y Ayyad, D Bazzacco, J Benlliure, P Boutachkov, M Bowry, A Bracco, AM Bruce, M Bunce, F Camera, E Casarejos, ML Cortes, FCL Crespi, A Corsi, AMD Bacelar, AY Deo, C Domingo-Pardo, M Doncel, T Engert, K Eppinger, GF Farrelly, F Farinon, E Farnea, H Geissel, J Gerl, N Goel, M Gorska, J Grebosz, E Gregor, T Habermann, R Hoischen, R Janik, PR John, S Klupp, I Kojouharov, N Kurz, SM Lenzi, S Leoni, S Mandal, R Menegazzo, D Mengoni, B Million, V Modamio, AI Morales, DR Napoli, F Naqvi, R Nicolini, C Nociforo, M Pfuetzner, S Pietri, Z Podolyak, A Prochazka, W Prokopowicz, F Recchia, PH Regan, MW Reed, D Rudolph, E Sahin, H Schaffner, A Sharma, B Sitar, D Siwal, K Steiger, P Strmen, TPD Swan, I Szarka, CA Ur, PM Walker, H Weick, O Wieland, H-J Wollersheim (2014)Isomeric decay spectroscopy of the Bi-217 isotope, In: PHYSICAL REVIEW C90(3)ARTN 0pp. ?-? AMER PHYSICAL SOC
    J Agramunt, AR Garcia, A Algora, J Aysto, R Caballero-Folch, F Calvino, D Cano-Ott, G Cortes, C Domingo-Pardo, T Eronen, W Gelletly, MB Gomez-Hornillos, J Hakala, A Jokinen, D Jordan, A Kankainen, V Kolkinen, T Martinez, PJ Mason, I Moore, H Penttila, Z Podolyak, M Reponen, A Riego, J Rissanen, B Rubio, A Saastamoinen, JL Tain, E Valencia (2014)New Beta-delayed Neutron Measurements in the Light-mass Fission Group, In: NUCLEAR DATA SHEETS120pp. 74-77 ACADEMIC PRESS INC ELSEVIER SCIENCE
    C Fahlander, G de Angelis, D Bazzacco, S Beghini, F Brandolini, D Cline, L Corradi, M De Poli, E Farnea, A Gadea, T Hartlein, S Lunardi, G Montagnoli, DR Napoli, CM Petrache, Z Podolyak, CR Alvarez, F Scarlassara, AM Stefanini, CY Wu (1998)Fragmentation of the two-phonon gamma-vibration in Er-166, In: ACTA PHYSICA HUNGARICA NEW SERIES-HEAVY ION PHYSICS7(1)pp. 109-110
    H Watanabe, G Lorusso, S Nishimura, ZY Xu, T Sumikama, P-A Soederstroem, P Doornenbal, F Browne, G Gey, HS Jung, J Taprogge, Z Vajta, J Wu, A Yagi, H Baba, G Benzoni, KY Chae, FCL Crespi, N Fukuda, R Gernhaeuser, N Inabe, T Isobe, A Jungclaus, D Kameda, GD Kim, YK Kim, I Kojouharov, FG Kondev, T Kubo, N Kurz, YK Kwon, GJ Lane, Z Li, C-B Moon, A Montaner-Piza, K Moschner, F Naqvi, M Niikura, H Nishibata, D Nishimura, A Odahara, R Orlandi, Z Patel, Z Podolyak, H Sakurai, H Schaffner, GS Simpson, K Steiger, H Suzuki, H Takeda, A Wendt, K Yoshinaga (2013)Isomers in Pd-128 and Pd-126: Evidence for a Robust Shell Closure at the Neutron Magic Number 82 in Exotic Palladium Isotopes, In: PHYSICAL REVIEW LETTERS111(15)ARTN 15250 AMER PHYSICAL SOC
    G Georgiev, G Neyens, M Hass, DL Balabanski, C Bingham, C Borcea, N Coulier, R Coussement, JM Daugas, G De France, FD Santos, M Gorska, H Grawe, R Grzywacz, M Lewitowicz, H Mach, I Matea, RD Page, M Pfutzner, YE Penionzhkevich, Z Podolyak, PH Regan, K Rykaczewski, M Sawicka, NA Smirnova, YG Sobolev, M Stanoiu, S Teughels, K Vyvey (2002)g factor measurements of mu s isomeric states in neutron-rich nuclei around Ni-68 produced in projectile-fragmentation reactions, In: JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS28(12)PII S0954-pp. 2993-3006 IOP PUBLISHING LTD
    A Algora, E Valencia, JL Tain, MD Jordan, J Agramunt, B Rubio, E Estevez, F Molina, A Montaner, V Guadilla, M Fallot, A Porta, A-A Zakari-Issoufou, VM Bui, S Rice, Z Podolyak, PH Regan, W Gelletly, M Bowry, P Mason, GF Farrelly, J Rissanen, T Eronen, I Moore, H Penttila, J Aysto, V Eloma, J Hakala, A Jokinen, V Kolkinen, M Reponen, V Sonnenschein, D Cano-Ott, T Martinez, E Mendoza, AR Garcia, MB Gomez-Hornillos, V Gorlychev, R Caballero-Folch, FG Kondev, AA Sonzogni (2014)Total Absorption Study of Beta Decays Relevant for Nuclear Applications and Nuclear Structure, In: NUCLEAR DATA SHEETS120pp. 12-15 ACADEMIC PRESS INC ELSEVIER SCIENCE
    Z Podolyak, CM Shand, E Wilson, BA Brown, H Grawe, CJ Chiara, S Zhu, B Fornal, RVF Janssens, M Bowry, M Bunce, MP Carpenter, N Cieplicka, AY Deo, GD Dracoulis, CR Hoffman, RS Kempley, FG Kondev, GJ Lane, T Lauritsen, G Lotay, MW Reed, PH Regan, CR Triguero, D Seweryniak, B Szpak, PM Walker, A Gargano, L Coraggio, N Itaco (2015)Octupole transitions in the Pb-208 region, In: 11TH INTERNATIONAL SPRING SEMINAR ON NUCLEAR PHYSICS: SHELL MODEL AND NUCLEAR STRUCTURE - ACHIEVEMENTS OF THE PAST TWO DECADES580ARTN 0pp. ?-? IOP PUBLISHING LTD
    CM Petrache, S Brant, D Bazzacco, G Falconi, E Farnea, S Lunardi, V Paar, Z Podolyak, R Venturelli, D Vretenar (1998)Detailed spectroscopy and IBFFM interpretation of the odd-odd nuclei Pr-132 and Pr-130, In: NUCLEAR PHYSICS A635(3)pp. 361-383 ELSEVIER SCIENCE BV
    T Alharbi, PH Regan, N Marginean, Z Podolyak, A Bajoga, R Britton, D Bucurescu, D Deleanu, D Filipescu, D Ghita, T Glodariu, C Mihai, K Mulholland, R Marginean, A Negret, CR Nita, Z Patel, OJ Roberts, L Stroe, T Sava, C Townsley, NV Zamfir (2014)Sub-nanosecond Half-life Measurement of the Yrast I-pi=5(-) State in the N=78 Nucleus Ce-136(58) using Fast-timing Coincident Gamma-ray Spectroscopy, In: NUCLEAR DATA SHEETS120pp. 59-61 ACADEMIC PRESS INC ELSEVIER SCIENCE
    R Caballero-Folch1, C Domingo-Pardo, J Agramunt, A Algora, F Ameil, A Arcones, Y Ayyad, J Benlliure, IN Borzov, M Bowry, F Calvino, D Cano-Ott, G Cortes, T Davinson, I Dillmann, A Estrade, A Evdokimov, T Faestermann, F Farinon, D Galaviz, AR Garcıa, H Geissel, William Gelletly, R Gernhauser, MB Gomez-Hornillos, C Guerrero, M Heil, C Hinke, R Knobel, I Kojouharov, J Kurcewicz, N Kurz, YA Litvinov, L Maier, J Marganiec, T Marketin, M Marta, T Martınez, G Martınez-Pinedo, F Montes, I Mukha, DR Napoli, C Nociforo, C Paradela, S Pietri, Zsolt Podolyak, A Prochazka, S Rice, A Riego, B Rubio, H Schaffner, C Scheidenberger, K Smith, E Sokol, K Steiger, B Sun, JL Taın, M Takechi, D Testov, H Weick, E Wilson, JS Winfield, Rachael Wood, P Woods, A Yeremin (2017)First measurement of several β-delayed neutron emitting isotopes beyond N=126, In: Physical Review Letters.117(1)012501 American Physical Society

    The β-delayed neutron emission probabilities of neutron rich Hg and Tl nuclei have been measured together with β-decay half-lives for 20 isotopes of Au, Hg, Tl, Pb and Bi in the mass region N&126. These are the heaviest species where neutron emission has been observed so far. These measurements provide key information to evaluate the performance of nuclear microscopic and phenomenological models in reproducing the high-energy part of the β-decay strength distribution. This provides important constraints to global theoretical models currently used in r-process nucleosynthesis.

    C Wheldon, PM Walker, P Chowdhury, I Shestakova, R D'Alarcao, I Ahmad, MP Carpenter, DM Cullen, RVF Janssens, TL Khoo, FG Kondev, CJ Lister, CJ Pearson, Z Podolyak, D Seweryniak, I Wiedenhoever (2001)First observation of a rotational band in neutron-rich Lu-180, In: JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS27(2)pp. L13-L17 IOP PUBLISHING LTD
    D Bucurescu, C Rusu, N Marginean, C A Ur, G de Angelis, L Corradi, D Bazzacco, S Beghini, F Della Vedova, G Duchene, E Farnea, T Faul, E Fioretto, A Gadea, W Gelletly, B Guiot, M Ionescu-Bujor, A Lordachescu, S D Landown, S M Lenzi, S Lunardi, P Mason, C Mihai, R Marginean, R Menegazzo, G Montagnoli, D Napoli, Z Podolyak, P H Regan, F Scarlassara, A M Stefanini, G Suliman, S Szilner, M Trotta, J J Valiente-Dobon, Y H Zhang (2007)Gamma-ray Spectroscopy of the Neutron-Rich Nuclei Rb-89, Y-92, and Y-93 with Multinucleon Transfer Reactions, In: Physical Review C76(6)

    The positive-parity yrast states in the Rb-89, Y-92, and Y-93 nuclei were studied using gamma-ray spectroscopy with heavy-ion induced reactions. In the multinucleon transfer reactions Pb-208+Zr-90 (590 MeV) and U-238+Se-82 (505 MeV), several gamma-ray transitions were identified in these nuclei by means of coincidences between recoiling ions identified with the PRISMA spectrometer and gamma rays detected with the CLARA gamma-ray array in thin target experiments. Level schemes were subsequently determined from triple-gamma coincidences recorded with the GASP array in a thick target experiment, in the reactions produced by a 470 MeV Se-82 beam with a Os-192 target. The observed level schemes are compared to shell-model calculations.

    MA Najem, FA Abolaban, Z Podolyak, NM Spyrou (2015)Neutron production from flattening filter free high energy medical linac: A Monte Carlo study, In: RADIATION PHYSICS AND CHEMISTRY116pp. 176-180 PERGAMON-ELSEVIER SCIENCE LTD
    PH Regan, GA Jones, Z Podolyak, N Yoshinaga, K Higashiyama, G de Angelis, YH Zhang, A Gadea, CA Ur, M Axiotis, D Bazzacco, R Broda, D Bucurescu, E Farnea, W Gelletly, M Ionescu-Bujor, A Iordachescu, T Kroll, SD Langdown, S Lenzi, S Lunardi, N Marginean, T Martinez, N Medina, R Menegazzo, DR Napoli, B Quintana, B Rubio, C Rusu, R Schwenger, D Tonev, JJ Valiente Dobon, W von Oertzen (2006)Multinucleon transfer reactions to study single-particle evolution in Se isotopes, In: Capture Gamma-Ray Spectroscopy and Related Topics819pp. 464-471
    M Stanoiu, F Azaiez, Z Dombradi, O Sorlin, B A Brown, M Belleguic, D Sohler, M G Saint-Laurent, M J Lopez-Jimenez, Y E Penionzhkevich, G Sletten, N L Achouri, J C Angelique, F Becker, C Borcea, C Bourgeois, A Bracco, J M Daugas, Z Dlouhy, C Donzaud, J Duprat, Z Fulop, D Guillemaud-Mueller, S Grevy, F Ibrahim, A Kerek, A Krasznahorkay, M Lewitowicz, S Leenhardt, S Lukyanov, P Mayet, S Mandal, H van der Marel, W Mittig, J Mrazek, F Negoita, F De Oliveira-Santos, Z Podolyak, F Pougheon, M G Porquet, P Roussel-Chomaz, H Savajols, Y Sobolev, C Stodel, J Timar, A Yamamota (2004)N=14 and 16 Shell Gaps in Neutron-Rich Oxygen Isotopes, In: Physical Review C69(3)

    In-beam gamma-ray spectroscopy using fragmentation reactions of both stable and radioactive beams has been performed in order to study the structure of excited states in neutron-rich oxygen isotopes with masses ranging from A=20 to 24. For the produced fragments, gamma-ray energies, intensities, and gamma-gamma coincidences have been measured. Based on this information new level schemes are proposed for O-21,O-22 up to the neutron separation energy. The nonobservation of any gamma-decay branch from O-23 and O-24 suggests that their excited states lie above the neutron decay thresholds. From this, as well as from the level schemes proposed for O-21 and O-22, the size of the N=14 and 16 shell gaps in oxygen isotopes is discussed in the light of shell-model calculations.

    XL Tu, B Mei, YH Zhang, HS Xu, YA Litvinov, WJ Huang, Z Podolyak, A Kelic-Heil, W Zhang, SA Litvinov, K Blaum, XH Zhou, P Shuai, M Wang, BS Gao, XC Chen, YJ Yuan, JW Xia, JC Yang, ZG Hu, XW Ma, BH Sun, XL Yan, RS Mao, ZY Sun, GQ Xiao, X Xu, PM Walker, T Yamaguchi, F Bosch, N Winckler, RJ Chen, YM Xing, CY Fu, DW Liu, Q Zeng, Z Ge, Y Sun, HW Zhao, TC Zhao (2015)Study of projectile fragmentation reaction with isochronous mass spectrometry, In: PHYSICA SCRIPTAT166ARTN 01400 IOP PUBLISHING LTD
    L Morrison, K Hadyńska-Klek, Zs Podolyák, D. T Doherty, L. P Gaffney, L Kaya, L Próchniak, J Samorajczyk-Pyśk, J Srebrny, T Berry, A Boukhari, M Brunet, R Canavan, R Catherall, S. J Colosimo, J. G Cubiss, H De Witte, Ch Fransen, E Giannopoulos, T Kröll, H Hess, N Lalović, B Marsh, Y. Martinez Palenzuela, P. J Napiorkowski, G O'Neill, J Pakarinen, J. P Ramos, P Reiter, J. A Rodriguez, D Rosiak, S Rothe, M Rudigier, M Siciliano, J Snäll, P Spagnoletti, S Thiel, N Warr, F Wenander, R Zidarova, ZSOLT PODOLYAK, M Zielińska (2020)Quadrupole deformation of Xe 130 measured in a Coulomb-excitation experiment, In: Physical Review. C102054304

    Low-lying states in the isotope Xe130 were populated in a Coulomb-excitation experiment performed at CERN's HIE-ISOLDE facility. The magnitudes and relative signs of seven E2 matrix elements and one M1 matrix element coupling five low-lying states in Xe130 were determined using the semiclassical coupled-channel Coulomb-excitation least-squares search code gosia. The diagonal E2 matrix elements of both the 21+ and 41+ states were extracted for the first time. The reduced transition strengths are in line with those obtained from previous measurements. Experimental results were compared with the general Bohr Hamiltonian with the microscopic input from mean-field theory utilizing universal nuclear energy density functional (UNEDF0), shell-model calculations using the GCN50:82 and SN100PN interactions, and simple phenomenological models (Davydov-Filippov and γ-soft). The extracted shape parameters indicate triaxial-prolate deformation in the ground-state band. In general, good agreement between theoretical predictions and experimental values was found, while neither phenomenological model was found to provide an adequate description of Xe130.

    A Gottardo, JJ Valiente-Dobón, G De Angelis, DR Napoli, E Sahin, A Gottardo, S Lunardi, SM Lenzi, E Maglione, G Benzoni, R Nicolini, A Bracco, F Camera, FCL Crespi, A Corsi, S Leoni, B Million, AI Morales, O Wieland, R Nicolini, A Bracco, F Camera, A Corsi, S Leoni, A Gadea, A Algora, S Lunardi, D Bazzacco, E Farnea, SM Lenzi, R Menegazzo, D Mengoni, F Recchia, CA Ur, E Maglione, P Boutachkov, M Górska, S Pietri, H Weick, ML Cortes, C Domingo-Pardo, T Engert, F Farinon, H Geissel, J Gerl, N Goel, E Gregor, T Habermann, R Hoischen, I Kojouharov, N Kurz, F Naqvi, C Nociforo, A Prochazka, W Prokopowicz, H Schaffner, A Sharma, H-J Wollersheim, AM Bruce, M Bunce, AM Denis Bacelar, J Grebosz, Z Podolyák, PH Regan, N Al-Dahan, M Bowry, AY Deo, GF Farrelly, MW Reed, TPD Swan, PM Walker, M Pfützner, J Alcántara Núñez, Y Ayyad, J Benlliure, N Alkhomashi, PRP Allegro, RV Ribas, E Casarejos, M Doncel, Z Dombradi, K Eppinger, S Klupp, K Steiger, R Hoischen, D Rudolph, R Janik, B Sitar, P Strmen, I Szarka, S Mandal, D Siwal, F Naqvi, PM Walker, F Nowacki, AP Zuker (2012)New isomers in the full seniority scheme of neutron-rich lead isotopes: The role of effective three-body forces, In: Physical Review Letters109(16) American Physical Society

    The neutron-rich lead isotopes, up to Pb216, have been studied for the first time, exploiting the fragmentation of a primary uranium beam at the FRS-RISING setup at GSI. The observed isomeric states exhibit electromagnetic transition strengths which deviate from state-of-the-art shell-model calculations. It is shown that their complete description demands the introduction of effective three-body interactions and two-body transition operators in the conventional neutron valence space beyond Pb208. © 2012 American Physical Society.

    M. Jentschel, A. Blanc, G. de France, U. Köster, S. Leoni, P. Mutti, G. Simpson, T. Soldner, C. Ur, W. Urban, S. Ahmed, A. Astier, L. Augey, T. Back, P. Ba̧czyk, A. Bajoga, D. Balabanski, T. Belgya, G. Benzoni, C. Bernards, D.C. Biswas, G. Bocchi, S. Bottoni, R. Britton, B. Bruyneel, J. Burnett, R.B. Cakirli, R. Carroll, Wilton Catford, B. Cederwall, I. Celikovic, N. Cieplicka-Oryńczak, E. Clement, N. Cooper, F. Crespi, M. Csatlos, D. Curien, M. Czerwiński, L.S. Danu, A. Davies, F. Didierjean, F. Drouet, G. Duchêne, C. Ducoin, K. Eberhardt, S. Erturk, L.M. Fraile, A. Gottardo, L. Grente, L. Grocutt, C. Guerrero, D. Guinet, A.-L. Hartig, C. Henrich, A. Ignatov, S. Ilieva, D. Ivanova, B.V. John, R. John, J. Jolie, S. Kisyov, M. Krticka, T. Konstantinopoulos, A. Korgul, A. Krasznahorkay, T. Kröll, J. Kurpeta, I. Kuti, S. Lalkovski, C. Larijani, R. Leguillon, R. Lica, O. Litaize, R. Lozeva, C. Magron, C. Mancuso, E. Ruiz Martinez, R. Massarczyk, C. Mazzocchi, B. Melon, D. Mengoni, C. Michelagnoli, B. Million, C. Mokry, S. Mukhopadhyay, K. Mulholland, A. Nannini, D.R. Napoli, B. Olaizola, R. Orlandi, Z. Patel, V. Paziy, C. Petrache, M. Pfeiffer, N. Pietralla, Z. Podolyak, M. Ramdhane, N. Redon, Patrick Regan, J.M. Regis, D. Regnier, R. J. Oliver, Matthias Rudigier, J. Runke, T. Rza̧ca-Urban, N. Saed-Samii, M.D. Salsac, M. Scheck, R. Schwengner, L. Sengele, P. Singh, J. Smith, O. Stezowski, B. Szpak, T. Thomas, M. Thürauf, J. Timar, A. Tom, I. Tomandl, T. Tornyi, C. Townsley, A. Tuerler, S. Valenta, A. Vancraeyenest, V. Vandone, J. Vanhoy, V. Vedia, N. Warr, V. Werner, D. Wilmsen, E. Wilson, T. Zerrouki, M. Zielinska (2017)EXILL—a high-efficiency, high-resolution setup for γ-spectroscopy at an intense cold neutron beam facility, In: Journal of Instrumentation12(11)pp. P11003-P11003 IOP Publishing

    In the EXILL campaign a highly efficient array of high purity germanium (HPGe) detectors was operated at the cold neutron beam facility PF1B of the Institut Laue-Langevin (ILL) to carry out nuclear structure studies, via measurements of γ-rays following neutron-induced capture and fission reactions. The setup consisted of a collimation system producing a pencil beam with a thermal capture equivalent flux of about 108 n s−1cm−2 at the target position and negligible neutron halo. The target was surrounded by an array of eight to ten anti-Compton shielded EXOGAM Clover detectors, four to six anti-Compton shielded large coaxial GASP detectors and two standard Clover detectors. For a part of the campaign the array was combined with 16 LaBr3:(Ce) detectors from the FATIMA collaboration. The detectors were arranged in an array of rhombicuboctahedron geometry, providing the possibility to carry out very precise angular correlation and directional-polarization correlation measurements. The triggerless acquisition system allowed a signal collection rate of up to 6 × 105 Hz. The data allowed to set multi-fold coincidences to obtain decay schemes and in combination with the FATIMA array of LaBr3:(Ce) detectors to analyze half-lives of excited levels in the pico- to microsecond range. Precise energy and efficiency calibrations of EXILL were performed using standard calibration sources of 133Ba, 60Co and 152Eu as well as data from the reactions 27Al(n,γ)28Al and 35Cl(n,γ)36Cl in the energy range from 30 keV up to 10 MeV.

    P M Walker, Y Hirayama, G J Lane, H Watanabe, G D Dracoulis, M Ahmed, M Brunet, T Hashimoto, S Ishizawa, F G Kondev, Yu A Litvinov, H Miyatake, J Y Moon, M Mukai, T Niwase, J H Park, Zs Podolyák, M Rosenbusch, P Schury, M Wada, X Y Watanabe, W Y Liang, ZSOLT PODOLYAK, F R Xu (2020)Properties of 187 Ta Revealed through Isomeric Decay, In: Physical Review Letters125(19) American Physical Society

    Mass-separated 187Ta114 in a high-spin isomeric state has been produced for the first time by multinucleon transfer reactions, employing an argon gas-stopping cell and laser ionization. Internal γ rays revealed a T1/2 = 7.3 ± 0.9     s isomer at 1778 ± 1     keV , which decays through a rotational band with perturbations associated with the approach to a prolate-oblate shape transition. Model calculations show less influence from triaxiality compared to heavier elements in the same mass region. The isomer-decay reduced E 2 hindrance factor fν = 27 ± 1 supports the interpretation that axial symmetry is approximately conserved.

    S Akkoyun, A Algora, B Alikhani, F Ameil, G De Angelis, L Arnold, A Astier, A Ataç, Y Aubert, C Aufranc, A Austin, S Aydin, F Azaiez, S Badoer, DL Balabanski, D Barrientos, G Baulieu, R Baumann, D Bazzacco, FA Beck, T Beck, P Bednarczyk, M Bellato, MA Bentley, G Benzoni, R Berthier, L Berti, R Beunard, G Lo Bianco, B Birkenbach, PG Bizzeti, AM Bizzeti-Sona, F Le Blanc, JM Blasco, N Blasi, D Bloor, C Boiano, M Borsato, D Bortolato, AJ Boston, HC Boston, P Bourgault, P Boutachkov, A Bouty, A Bracco, S Brambilla, IP Brawn, A Brondi, S Broussard, B Bruyneel, D Bucurescu, I Burrows, A Bürger, S Cabaret, B Cahan, E Calore, F Camera, A Capsoni, F Carrió, G Casati, M Castoldi, B Cederwall, J-L Cercus, V Chambert, M El Chambit, R Chapman, L Charles, J Chavas, E Clément, P Cocconi, S Coelli, PJ Coleman-Smith, A Colombo, S Colosimo, C Commeaux, D Conventi, RJ Cooper, A Corsi, A Cortesi, L Costa, FCL Crespi, JR Cresswell, DM Cullen, D Curien, A Czermak, D Delbourg, R Depalo, T Descombes, P Désesquelles, P Detistov, C Diarra, F Didierjean, MR Dimmock, QT Doan, C Domingo-Pardo, M Doncel, F Dorangeville, N Dosme, Y Drouen, G Duchêne, B Dulny, J Eberth, P Edelbruck, J Egea, T Engert, MN Erduran, S Ertürk, C Fanin, S Fantinel, E Farnea, T Faul, M Filliger, F Filmer, C Finck, G De France, A Gadea, W Gast, A Geraci, J Gerl, R Gernhäuser, A Giannatiempo, A Giaz, L Gibelin, A Givechev, N Goel, V González, A Gottardo, X Grave, J Grȩbosz, R Griffiths, AN Grint, P Gros, L Guevara, M Gulmini, A Görgen, HTM Ha, T Habermann, LJ Harkness, H Harroch, K Hauschild, C He, A Hernández-Prieto, B Hervieu, H Hess, T Hüyük, E Ince, R Isocrate, G Jaworski, A Johnson, J Jolie, P Jones, B Jonson, P Joshi, DS Judson, A Jungclaus, M Kaci, N Karkour, M Karolak, A Kaşkaş, M Kebbiri, RS Kempley, A Khaplanov, S Klupp, M Kogimtzis, I Kojouharov, A Korichi, W Korten, T Kröll, R Krücken, N Kurz, BY Ky, M Labiche, X Lafay, L Lavergne, IH Lazarus, S Leboutelier, F Lefebvre, E Legay, L Legeard, F Lelli, SM Lenzi, S Leoni, A Lermitage, D Lersch, J Leske, SC Letts, S Lhenoret, RM Lieder, D Linget, J Ljungvall, A Lopez-Martens, A Lotodé, S Lunardi, A Maj, J Van Der Marel, Y Mariette, N Marginean, R Marginean, G Maron, AR Mather, W Mȩczyński, V Mendéz, P Medina, B Melon, R Menegazzo, D Mengoni, E Merchan, L Mihailescu, C Michelagnoli, J Mierzejewski, L Milechina, B Million, K Mitev, P Molini, D Montanari, S Moon, F Morbiducci, R Moro, PS Morrall, O Möller, A Nannini, DR Napoli, L Nelson, M Nespolo, VL Ngo, M Nicoletto, R Nicolini, Y Le Noa, PJ Nolan, M Norman, J Nyberg, A Obertelli, A Olariu, R Orlandi, DC Oxley, C Özben, M Ozille, C Oziol, E Pachoud, M Palacz, J Palin, J Pancin, C Parisel, P Pariset, G Pascovici, R Peghin, L Pellegri, A Perego, S Perrier, M Petcu, P Petkov, C Petrache, E Pierre, N Pietralla, S Pietri, M Pignanelli, I Piqueras, Z Podolyak, P Le Pouhalec, J Pouthas, D Pugnére, VFE Pucknell, A Pullia, B Quintana, R Raine, G Rainovski, L Ramina, G Rampazzo, G La Rana, M Rebeschini, F Recchia, N Redon, M Reese, P Reiter, PH Regan, S Riboldi, M Richer, M Rigato, S Rigby, G Ripamonti, AP Robinson, J Robin, J Roccaz, J-A Ropert, B Rossé, C Rossi Alvarez, D Rosso, B Rubio, D Rudolph, F Saillant, E Şahin, F Salomon, M-D Salsac, J Salt, G Salvato, J Sampson, E Sanchis, C Santos, H Schaffner, M Schlarb, DP Scraggs, D Seddon, M Şenyiǧit, M-H Sigward, G Simpson, J Simpson, M Slee, JF Smith, P Sona, B Sowicki, P Spolaore, C Stahl, T Stanios, E Stefanova, O Stézowski, J Strachan, G Suliman, P-A Söderström, JL Tain, S Tanguy, S Tashenov, C Theisen, J Thornhill, F Tomasi, N Toniolo, R Touzery, B Travers, A Triossi, M Tripon, KMM Tun-Lanoë, M Turcato, C Unsworth, CA Ur, JJ Valiente-Dobon, V Vandone, E Vardaci, R Venturelli, F Veronese, C Veyssiere, E Viscione, R Wadsworth, PM Walker, N Warr, C Weber, D Weisshaar, D Wells, O Wieland, A Wiens, G Wittwer, HJ Wollersheim, F Zocca, NV Zamfir, M Ziȩbliński, A Zucchiatti (2012)AGATA - Advanced GAmma Tracking Array, In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment668pp. 26-58 Elsevier
    T Sumikama, K Yoshinaga, H Watanabe, S Nishimura, Y Miyashita, K Yamaguchi, K Sugimoto, J Chiba, Z Li, H Baba, JS Berryman, N Blasi, A Bracco, F Camera, P Doornenbal, S Go, T Hashimoto, S Hayakawa, C Hinke, E Ideguchi, T Isobe, Y Ito, DG Jenkins, Y Kawada, N Kobayashi, Y Kondo, R Krücken, S Kubono, G Lorusso, T Nakano, M Kurata-Nishimura, A Odahara, HJ Ong, S Ota, Z Podolyák, H Sakurai, H Scheit, K Steiger, D Steppenbeck, S Takano, A Takashima, K Tajiri, T Teranishi, Y Wakabayashi, PM Walker, O Wieland, H Yamaguchi (2012)Search for spin-orbit-force reduction at 106,108Zr around r-process path, In: AIP Conference Proceedings1484pp. 156-160

    Shell gap at the magic number N = 82 is important to reproduce the 2nd peak of r-process abundance. If a spin-orbit force is reduced in a very neutron-rich region, a shell quenching at N = 82 and a new shell closure at N = 70 are predicted. A shell evolution by the spin-orbit-force reduction can be searched for through the shape evolution of Zr isotopes around an expected double magic nuclei, 110Zr(Z=40,N=70). We performed β-γ and isomer spectroscopy at RIBF to observe low-lying states in 106,108Zr. The present results indicate a well deformed shape for 106,108Zr. The drastic reduction of the spin-orbit force most likely does not occur around 110Zr on an r-process path. © 2012 American Institute of Physics.

    L Knafla, P Alexa, U Köster, G Thiamova, J.M Régis, J Jolie, A Blanc, A.M Bruce, A Esmaylzadeh, L.M Fraile, G De France, G Häfner, S Ilieva, M Jentschel, V Karayonchev, W Korten, T Kröll, S Lalkovski, S Leoni, H Mach, N Mărginean, P Mutti, G Pascovici, V Paziy, ZSOLT PODOLYAK, P.H Regan, O.J Roberts, N Saed-Samii, G.S Simpson, J.F Smith, T Soldner, C Townsley, C.A Ur, W Urban, A Vancraeyenest, N Warr (2020)Lifetime measurements in the odd-A nucleus $^{177}$Hf, In: Phys.Rev.C102(5)054322 American Physical Society

    Lifetimes of low- and high-spin states in the odd-A nucleus Hf177 were measured during the EXILL&FATIMA campaign using a spectrometer equipped with eight HPGe-Clover detectors and 16 fast-timing LaBr3(Ce) detectors. For the determination of lifetimes in the pico- to nanosecond regime, the well-established generalized centroid difference method was used. Lifetimes of the 9/2−, 9/2+, 11/2−, 11/2+ states were remeasured, the lifetimes of the 13/2−, 17/2−, 13/2+, 15/2+, and 17/2+ states were determined for the first time and an upper limit for the 19/2+ state has been established. From these lifetimes absolute reduced transition probabilities were extracted and compared to particle-rotor-model calculations and quasiparticle-phonon-model calculations showing the importance of including multipole-multipole interactions in the description of odd-A nuclei in the rare earth region.

    R Avigo, O Wieland, A Bracco, F Camera, F Ameil, T Arici, A Ataç, D Barrientos, D Bazzacco, P Bednarczyk, G Benzoni, B Birkenbach, N Blasi, H.C Boston, S Bottoni, S Brambilla, B Bruyneel, M Ciemała, E Clément, M.L Cortés, F.C.L Crespi, D.M Cullen, D Curien, F Didierjean, C Domingo-Pardo, G Duchêne, J Eberth, A Görgen, A Gadea, J Gerl, N Goel, P Golubev, V González, M Górska, A Gottardo, E Gregor, G Guastalla, T Habermann, L.J Harkness-Brennan, A Jungclaus, M Kmiecik, I Kojouharov, W Korten, N Kurz, M Labiche, N Lalović, S Leoni, M Lettmann, A Maj, R Menegazzo, D Mengoni, E Merchan, B Million, A.I Morales, D.R Napoli, C Nociforo, J Nyberg, N Pietralla, S Pietri, Zs Podolyák, V.Yu Ponomarev, A Pullia, B Quintana, G Rainovski, D Ralet, F Recchia, M Reese, P Regan, P Reiter, S Riboldi, D Rudolph, M.D Salsac, E Sanchis, L.G Sarmiento, H Schaffner, J Simpson, O Stezowski, J.J Valiente-Dobón, H.J Wollersheim, ZSOLT PODOLYAK, (2020)Low-lying electric dipole γ-continuum for the unstable 62,64Fe nuclei: Strength evolution with neutron number, In: Physics Letters. B811135951 Elsevier B.V

    The γ-ray emission from the nuclei 62,64Fe following Coulomb excitation at bombarding energy of 400-440 AMeV was measured with special focus on E1 transitions in the energy region 4-8 MeV. The unstable neutron-rich nuclei 62,64Fe were produced at the FAIR-GSI laboratories and selected with the FRS spectrometer. The γ decay was detected with AGATA. From the measured γ-ray spectra the summed E1 strength is extracted and compared to microscopic quasi-particle phonon model calculations. The trend of the E1 strength with increasing neutron number is found to be fairly well reproduced with calculations that assume a rather complex structure of the 1− states (three-phonon states) inducing a strong fragmentation of the E1 nuclear response below the neutron binding energy.

    P Čolović, S Szilner, A Illana, J. J Valiente-Dobón, L Corradi, G Pollarolo, T Mijatović, A Goasduff, G Benzoni, M. J.G Borge, A Boso, A Boukhari, S Ceruti, J. G Cubiss, G De Angelis, H De Witte, E Fioretto, Ch Fransen, F Galtarossa, L. P Gaffney, E Giannopoulos, H Hess, M. L Jurado-Gomez, L Kaya, Th Kröll, T Marchi, R Menegazzo, D Mengoni, D. R Napoli, G O'Neill, J Pakarinen, Zs Podolyák, F Recchia, P Reiter, D Rosiak, J Snall, P Spagnoletti, D Testov, S Thiel, N Warr, ZSOLT PODOLYAK, R Zidarova (2020)Population of lead isotopes in binary reactions using a Rb 94 radioactive beam, In: Physical Review. C102(5)

    We measured absolute cross sections for neutron transfer channels populated in the Rb94+Pb208 binary reaction. Cross sections have been extracted identifying directly the lead isotopes with the high efficiency MINIBALL γ-ray array coupled to a particle detector combined with a radioactive Rb94 beam delivered at Elab=6.2 MeV/nucleon by the HIE-ISOLDE facility. We observed sizable cross sections in the neutron-rich mass region, where the heavy partner acquires neutrons. A fair agreement between the measured cross sections with those from GRAZING calculations gives confidence in the cross-section predictions of more neutron-rich nuclei produced via a larger number of transferred nucleons.

    AI Morales, G Benzoni, A Gottardo, JJ Valiente-Dobon, N Blasi, A Bracco, F Camera, FCL Crespi, A Corsi, S Leoni, B Million, R Nicolini, O Wieland, A Gadea, S Lunardi, M Gorska, PH Regan, Z Podolyak, M Pfuetzner, S Pietri, P Boutachkov, H Weick, J Grebosz, AM Bruce, J Alcantara Nunez, A Algora, N Al-Dahan, Y Ayyad, N Alkhomashi, PRP Allegro, D Bazzacco, J Benlliure, M Bowry, M Bunce, E Casarejos, ML Cortes, AMD Bacelar, AY Deo, G de Angelis, C Domingo-Pardo, M Doncel, Z Dombradi, T Engert, K Eppinger, GF Farrelly, F Farinon, E Farnea, H Geissel, J Gerl, N Goel, E Gregor, T Habermann, R Hoischen, R Janik, S Klupp, I Kojouharov, N Kurz, S Mandal, R Menegazzo, D Mengoni, DR Napoli, F Naqvi, C Nociforo, A Prochazka, W Prokopowicz, F Recchia, RV Ribas, MW Reed, D Rudolph, E Sahin, H Schaffner, A Sharma, B Sitar, D Siwal, K Steiger, P Strmen, TPD Swan, I Szarka, CA Ur, PM Walker, H-J Wollersheim (2014)beta-decay studies of neutron-rich Tl, Pb, and Bi isotopes, In: PHYSICAL REVIEW C89(1)ARTN 0pp. ?-? AMER PHYSICAL SOC
    RHIANN CANAVAN, M. Rudigier, PATRICK HENRY REGAN, D. Thisse, M. Lebois, J N Wilson, N. Jovancevic, P.-A. Söderström, SEAN MICHAEL COLLINS, Jaime Benito García, S. Bottoni, MATTHEW HENRY BRUNET, N. Cieplicka-Orynczak, S. Courtin, DANIEL THOMAS DOHERTY, Luis Mario Fraile Prieto, K. Hadynska-Klek, G. Hafner, M. Heine, V. Karayonchev, Ł.W. Iskra, ADAM RUSSELL KENNINGTON, P. Koseoglou, GAVIN JAMES LOTAY, G Lorusso, M Nakhostin, C.R. Nita, S. Oberstedt, ZSOLT PODOLYAK, L Qi, J.-M. Régis, V. Sánchez-Tembleque, R Shearman, María Victoria Vedia Fernández, W. Witt (2020)Half-life measurements in Dy-164,Dy-166 using γ−γ fast-timing spectroscopy with the ν-Ball spectrometer, In: Physical Review. C101(2) American Physical Society

    We report on the measurement of lifetimes of excited states in the near-mid-shell nuclei Dy-164,Dy-166 using the gamma-ray coincidence fast-timing method. The nuclei of interest were populated using reactions between an O-18 beam and a gold-backed isotopically enriched Dy-164 target of thickness 6.3 mg/cm(2) at primary beam energies of 71, 76, and 80 MeV from the IPN-Orsay laboratory, France. Excited states were populated in Dy-164, Dy-166, and W-178,W-179 following Coulomb excitation, inelastic nuclear scattering, two-neutron transfer, and fusion-evaporation reaction channels respectively. Gamma rays from excited states were measured using the nu-Ball high-purity germanium (HPGe)-LaBr3 hybrid gamma-ray spectrometer with the excited state lifetimes extracted using the fast-timing coincidence method using HPGe-gated LaBr3-LaBr3 triple coincident events. The lifetime of the first I-pi = 2(+) excited state in Dy-166 was used to determine the transition quadrupole deformation of this neutron-rich nucleus for the first time. The experimental methodology was validated by showing consistency with previously determined excited state lifetimes in Dy-164. The half-lives of the yrast 2(+) states in Dy-164 and Dy-166 were 2.35(6) and 2.3(2) ns, respectively, corresponding to transition quadrupole moment values of Q(0) = 7.58(9) and 7.5(4) eb, respectively. The lifetime of the yrast 2(+) state in Dy-166 is consistent with a quenching of nuclear quadrupole deformation at beta approximate to 0.35 as the N = 104 mid-shell is approached.

    J.J Valiente-Dobón, A Gottardo, G Benzoni, A Gadea, S Lunardi, A Algora, G de Angelis, D Bazzacco, J Benlliure, A.M Bruce, F Camera, E Casarejos, M.L Cortés, F. C. L Crespi, A Corsi, C Domingo-Pardo, M Doncel, T Engert, H Geissel, J Gerl, A Goasduff, N Goel, M Górska, J Grebosz, E Gregor, T Habermann, S Klupp, I Kojouharov, N Kurz, S. M Lenzi, S Leoni, S Mandal, R Menegazzo, D Mengoni, B Million, A. I Morales, D.R Napoli, F Naqvi, C Nociforo, M Pfützner, S Pietri, ZSOLT PODOLYAK, A Prochazka, F Recchia, P.H Regan, D Rudolph, E Sahin, H Schaffner, A Sharma, B Sitar, D Siwal, P Strmen, I Szarka, C.A Ur, P.M Walker, H Weick, O Wieland, H.‐J Wollersheim, P Van Isacker (2021)Manifestation of the Berry phase in the atomic nucleus 213Pb, In: Physics Letters. B816136183 Elsevier

    The neutron-rich 213Pb isotope was produced in the fragmentation of a primary 1 GeV A 238U beam, separated in FRS in mass and atomic number, and then implanted for isomer decay γ-ray spectroscopy with the RISING setup at GSI. A newly observed isomer and its measured decay properties indicate that states in 213Pb are characterized by the seniority quantum number that counts the nucleons not in pairs coupled to angular momentum J=0. The conservation of seniority is a consequence of a geometric phase associated with particle-hole conjugation, which becomes observable in semi-magic nuclei where nucleons half-fill the valence shell. The γ-ray spectroscopic observables in 213Pb are thus found to be driven by two mechanisms, particle-hole conjugation and seniority conservation, which are intertwined through a Berry phase.

    E Rapisarda, R Shearman, M Rudigier, M Huyse, M Piersa, T Alexander, P Van Duppen, D S Judson, R Marginean, T Stora, R Lică, P M Walker, R E Mihai, S Stegemann, M Madurga, A Gredley, R D Page, L J Harkness-Brennan, F Rotaru, R Wadsworth, M Brunet, P Rahkila, V Vedia, H O U Fynbo, M Lund, L M Fraile, J R Creswell, T Berry, S Lalkovski, S Ansari, F Wearing, N Warr, S M Judge, V Pucknell, E R Gamba, C Nita, C M Shand, P H Regan, Ch Sotty, A Perea, R J Carroll, Z Patel, A N Andreyev, N Marginean, I H Lazarus, I Marroquin, O Tengblad, M Górska, Zs Podolyák, C Mihai, H Grawe, R B Gerst, M J G Borge, C Fahlander, A Negret, P T Greenlees, J Phrompao, H De Witte, I Kuti, J Kurcewicz, E Nácher, J Konki, S Pascu, W Gelletly, ZSOLT PODOLYAK (2020)Competition between Allowed and First-Forbidden β Decay: The Case of 208Hg → 208Tl, In: Physical review letters125192501 American Physical Society

    The β decay of 208Hg into the one-proton hole, one neutron-particle 20881Tl127 nucleus was investigated at CERN-ISOLDE. Shell-model calculations describe well the level scheme deduced, validating the proton-neutron interactions used, with implications for the whole of the N>126, Z

    K Alzimami, E Abuelhia, Z Podolyak, A Ioannou, NM Spyrou (2008)Characterization of LaBr(3): Ce and LaCl(3): Ce scintillators for gamma-ray spectroscopy, In: JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY278(3)pp. 755-759 SPRINGER
    T Alharbi, PH Regan, N Marginean, Z Podolyak, OJ Roberts, AM Bruce, N Alkhomashi, R Britton, D Bucurescu, D Deleanu, D Filipescu, D Ghita, T Glodariu, C Mihai, K Mulholland, R Lica, R Marginean, M Nakhostin, A Negret, CR Nita, L Stroe, T Sava, C Townsley, NV Zamfir (2015)Lifetime of the yrast I-pi=5(-) state and E1 hindrance in the transitional nucleus Ce-136(58), In: PHYSICAL REVIEW C91(2)ARTN 02730 AMER PHYSICAL SOC
    N Marginean, D Bucurescu, CR Alvarez, CA Ur, Y Sun, D Bazzacco, S Lunardi, G de Angelis, M Axiotis, E Farnea, A Gadea, M Ionescu-Bujor, A Iordachescu, W Krolas, T Kroll, SM Lenzi, T Martinez, R Menegazzo, DR Napoli, P Pavan, Z Podolyak, M De Poli, B Quintana, P Spolaore (2002)Delayed alignments in the N=Z nuclei Mo-84 and Ru-88, In: PHYSICAL REVIEW C65(5)ARTN 05130 AMER PHYSICAL SOC
    AB Garnsworthy, PH Regan, L Caceres, Y Pietri, Y Sun, D Rudolph, M Gorska, Z Podolyak, SJ Steer, R Hoischen, A Heinz, F Becker, R Bednarczyk, P Doornenbal, H Geissel, J Gerl, H Grawe, J Grebosz, A Kelic, I Kojouharov, N Kurz, F Montes, W Prokopowicz, T Saito, H Schaffner, S Tachenov, E Werner-Malento, HJ Wollersheim, G Benzoni, BB Blank, C Brandau, AM Bruce, F Camera, WN Catford, IJ Cullen, Z Dornbradi, E Estevez, W Gelletly, G Ilie, J Jolie, GA Jones, A Jungclaus, M Kmiecik, FG Kondev, T Kurtukian-Nieto, S Lalkovski, Z Liu, A Maj, S Myalski, M Pfutzner, S Schwertel, T Shizuma, AJ Simons, PM Walker, O Wieland, FR Xu (2008)Neutron-proton pairing competition in N = Z nuclei: Metastable state decays in the proton dripline nuclei (82)(41)Nb and (86)(43)TC (vol 660, pg 326, 2008), In: PHYSICS LETTERS B668(5)pp. 460-460 ELSEVIER SCIENCE BV
    E Farnea, G de Angelis, A Gadea, PG Bizzeti, A Dewald, J Eberth, A Algora, M Axiotis, D Bazzacco, AM Bizzeti-Sona, F Brandolini, G Colo, W Gelletly, MA Kaci, N Kintz, T Klug, T Kroll, SM Lenzi, S Lunardi, N Marginean, T Martinez, R Menegazzo, DR Napoli, J Nyberg, P Pavan, Z Podolyak, CM Petrache, B Quintana, B Rubio, P Spolaore, T Steinhardt, JL Tain, O Thelen, CA Ur, R Venturelli, M Wesizflog (2003)Isospin mixing in the N = Z nucleus Ge-64, In: PHYSICS LETTERS B551(1-2)PII S0370-pp. 56-62 ELSEVIER SCIENCE BV
    M Ionescu-Bujor, A Iordachescu, F Brandolini, M De Poli, N Marginean, D Bucurescu, SM Lenzi, NH Medina, DR Napoli, Z Podolyak, P Pavan, RV Ribas, CR Alvarez, CA Ur (2002)Quadrupole moment of the K-pi=14(+) isomer in W-176, In: PHYSICS LETTERS B541(3-4)PII S0370-pp. 219-226 ELSEVIER SCIENCE BV
    Callum Shand, Zsolt Podolyak, M. Górska, P. Doornenbal, A. Obertelli, F. Nowacki, T. Otsuka, K. Sieja, Jeffrey Tostevin, Y. Tsunoda, G. Authelet, H. Baba, D. Calvet, A. Château, S. Chen, A. Corsi, A. Delbart, J.M. Gheller, A. Giganon, A. Gillibert, T. Isobe, V. Lapoux, M. Matsushita, S. Momiyama, T. Motobayashi, M. Niikura, H. Otsu, N. Paul, C. Péron, A. Peyaud, E.C. Pollacco, J.-Y. Roussé, H. Sakurai, C. Santamaria, M. Sasano, Y. Shiga, D. Steppenbeck, S. Takeuchi, R. Taniuchi, T. Uesaka, H. Wang, K. Yoneda, T. Ando, T. Arici, A. Blazhev, F. Browne, A.M. Bruce, R.J. Carroll, L.X. Chung, M.L. Cortés, M. Dewald, B. Ding, Zs. Dombrádi, F. Flavigny, S. Franchoo, F. Giacoppo, A. Gottardo, K. Hadyńska-Klęk, A. Jungclaus, Z. Korkulu, S. Koyama, Y. Kubota, J. Lee, M. Lettmann, B.D. Linh, J. Liu, Z. Liu, C. Lizarazo, C. Louchart, R. Lozeva, K. Matsui, T. Miyazaki, K. Moschner, M. Nagamine, N. Nakatsuka, S. Nishimura, C.R. Nita, C.R. Nobs, L. Olivier, S. Ota, R. Orlandi, Z. Patel, P.H. Regan, Matthias Rudigier, E. Şahin, T. Saito, P.-A. Söderström, I. Stefan, T. Sumikama, D. Suzuki, Zs. Vajta, V. Vaquero, V. Werner, K. Wimmer, J. Wu, Z.Y. Xu (2017)Shell evolution beyond Z = 28 and N = 50: Spectroscopy of 81,82,83,84 Zn, In: Physics Letters B773pp. 492-497 Elsevier

    We report on the measurement of new low-lying states in the neutron-rich 81,82,83,84Zn nuclei via in-beam γ -ray spectroscopy. These include the View the MathML source41+→21+ transition in 82Zn, the View the MathML source21+→0g.s.+ and View the MathML source41+→21+ transitions in 84Zn, and low-lying states in 81,83Zn were observed for the first time. The reduced View the MathML sourceE(21+) energies and increased View the MathML sourceE(41+)/E(2+1) ratios at N=52N=52, 54 compared to those in 80Zn attest that the magicity is confined to the neutron number N=50N=50 only. The deduced level schemes are compared to three state-of-the-art shell model calculations and a good agreement is observed with all three calculations. The newly observed 2+2+ and 4+4+ levels in 84Zn suggest the onset of deformation towards heavier Zn isotopes, which has been incorporated by taking into account the upper sdg orbitals in the Ni78-II and the PFSDG-U models.

    RM Lieder, T Rzaca-Urban, H Brands, W Gast, HM Jager, L Mihailescu, Z Marcinkowska, W Urban, T Morek, C Droste, P Szymanski, S Chmel, D Bazzacco, G Falconi, R Menegazzo, S Lunardi, CR Alvarez, G de Angelis, E Farnea, A Gadea, DR Napoli, Z Podolyak, T Venkova, R Wyss (2002)Development of magnetic rotation in light Gd nuclei; study of Gd-142, In: EUROPEAN PHYSICAL JOURNAL A13(3)pp. 297-305 SPRINGER-VERLAG
    A Bracco, G Duchêne, ZSOLT PODOLYAK, P Reiter (2021)Gamma spectroscopy with AGATA in its first phases: New insights in nuclear excitations along the nuclear chart, In: Progress in Particle and Nuclear Physics103887 Elsevier B.V

    The Advanced GAmma Tracking Array (AGATA), the new generation high-resolution γ-ray spectrometer, has seen the realization of the first phases of its construction and exploitation. A number of nuclear structure studies based on experiments utilizing the principle of γ-ray tracking were carried out in this decade. The combination of highest detection efficiency and position sensitivity allowed very selective spectroscopic studies with stable beams and the use of instable ion beams with the lowest intensities. Nuclear-structure studies commenced already at INFN-LNL (Legnaro, Italy) with a first implementation of the array consisting of five AGATA modules. A larger array of AGATA modules was used at GSI (Darmstadt, Germany) for experiments with unstable ion beams at relativistic energies. The spectrometer was then mounted in a beam line at GANIL (Caen, France). This review discusses several of the obtained results, underlying the progress made and future perspectives. The performed experiments give insights into nuclear structure issues which are connected to single particles, collective degrees of freedom, nucleon interactions and symmetries. Most of the investigated nuclei are located outside the stability line and for stable nuclei the investigations concern unexplored configurations. Altogether the obtained results represent advances which could test theory in exclusive way and motivate new theoretical developments. Opportunities for further γ-ray spectroscopy with the foreseen more advanced phase of the AGATA emerge in the discussions of the presented data.

    MATTHEW HENRY BRUNET, ZSOLT PODOLYAK, T. A. Berry, B. A. Brown, R. J. Carroll, R Lica, Ch. Sotty, A. N. Andreyev, M. J. G. Borge, J. G. Cubiss, L.M. Fraile, H. O. U. Fynbo, E. Gamba, P Greenlees, L. J. Harkness-Brennan, M Huyse, D. S. Judson, J. Konki, J Kurcewicz, M Madurga, I. Lazarus, N Mărginean, R Mărginean, I. Marroquin, C Mihai, E Nacher, A Negret, S Pascu, R. D. Page, A Perea, J. Phrompao, M. Piersa, V. Pucknell, P Rahkila, E. Rapisarda, PATRICK HENRY REGAN, F Rotaru, M. Rudigier, C.M. Shand, R Shearman, E. C. Simpson, T Stora, O Tengblad, P Van Duppen, V. Vedia, S. Vinals, R Wadsworth, N Warr, H. De Witte (2021)Competition between allowed and first forbidden β decays of 208 At and expansion of the 208 Po level scheme, In: Physical Review C American Physical Society

    The structure of 208 Po populated through the EC/β + decay of 208 At was investigated using γ-ray spectroscopy at the ISOLDE Decay Station. The presented level scheme contains 27 new excited states and 43 new transitions, as well as a further 50 previously-observed γ rays which have been (re)assigned a position. The level scheme was compared to shell model calculations. Through this analysis approximately half of the β decay strength of 208 At was found to proceed via allowed and half via first forbidden decay. The first forbidden transitions predominantly populate core excited states at high excitation energies, which was qualitatively understood using shell model considerations. This mass region provides an excellent testing ground for the competition between allowed and first forbidden β-decay calculations, important for the detailed understanding of the nucleosynthesis of heavy elements.

    T Sumikama, N Fukuda, N Inabe, D Kameda, T Kubo, Y Shimizu, H Suzuki, H Takeda, K Yoshida, H Baba, F Browne, A.M Bruce, R Carroll, N Chiga, R Daido, F Didierjean, P Doornenbal, Y Fang, G Gey, E Ideguchi, T Isobe, S Lalkovski, Z Li, G Lorusso, R Lozeva, H Nishibata, S Nishimura, I Nishizuka, A Odahara, Z Patel, ZSOLT PODOLYAK, P.H Regan, S Rice, O.J Roberts, H Sakurai, G.S Simpson, L Sinclair, P.A Söderström, M Tanaka, J Taprogge, H Watanabe, V Werner, O Wieland, J Wu, Z.Y Xu, A Yagi (2021)Observation of new neutron-rich isotopes in the vicinity of $^{110}$Zr, In: PHYSICAL REVIEW C103(1)014614

    Neutron-rich radioactive isotope (RI) beams in the vicinity of Zr110 were produced using the in-flight fission of a 345-MeV/nucleon U238 beam at the RIKEN Radioactive Isotope Beam Factory. The RI beams were separated in flight by the large-acceptance two-stage fragment separator BigRIPS. Isotopes were clearly identified in a low-background particle-identification plot, which was obtained from the measurements of time of flight, magnetic rigidity, and energy loss using beam-line detectors placed in the BigRIPS separator and the ZeroDegree spectrometer. Nine new isotopes, Br101, Kr102, Rb105,106, Sr108, Y110,111, Zr114, and Nb117, are reported for the first time, with their measured production cross sections compared with the extrapolations of lighter isotopes down to the femtobarn regime.

    E Abuelhia, K Alzimami, M Alkhorayef, Z Podolyak, NM Spyrou (2008)Measurement of coincidence timing resolution of scintillation detectors compared to semiconductor detectors to image three-photon positron annihilation, In: JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY278(3)pp. 767-771 SPRINGER
    TPD Swan, PM Walker, Z Podolyak, MW Reed, GD Dracoulis, GJ Lane, T Kibedi, ML Smith (2012)Hindered decays from a non-yrast four-quasiparticle isomer in Er-164, In: PHYSICAL REVIEW C86(4)ARTN 0pp. ?-? AMER PHYSICAL SOC
    A Algora, J Jolie, Z Dombradi, D Sohler, Z Podolyak, T Fenyes (2003)Supersymmetry model in As-73 revisited: Electromagnetic transition rates and U(6/12), In: PHYSICAL REVIEW C67(4)ARTN 04430 AMERICAN PHYSICAL SOC
    A Jungclaus, L Caceres, M Gorska, M Pfutzner, S Pietri, E Werner-Malento, H Grawe, K Langanke, G Martinez-Pinedo, F Nowacki, A Poves, J J Cuenca-Garcia, D Rudolph, Z Podolyak, P H Regan, P Detistov, S Lalkovski, V Modamio, J Walker, P Bednarczyk, P Doornenbal, H Geissel, J Gerl, J Grebosz, I Kojouharov, N Kurz, W Prokopowicz, H Schaffner, H J Wollersheim, K Andgren, J Benlliure, G Benzoni, A M Bruce, E Casarejos, B Cederwall, F C Crespi, B Hadinia, M Hellstrom, R Hoischen, G Ilie, J Jolie, A Khaplanov, M Kmiecik, R Kumar, A Maj, S Mandal, F Montes, S Myalski, G S Simpson, S J Steer, S Tashenov, O Wieland (2007)Observation of Isomeric Decays in the R-Process Waiting-Point Nucleus Cd-130(82), In: Physical Review Letters99(13)

    The gamma decay of excited states in the waiting-point nucleus Cd-130(82) has been observed for the first time. An 8(+) two-quasiparticle isomer has been populated both in the fragmentation of a Xe-136 beam as well as in projectile fission of U-238, making Cd-130 the most neutron-rich N=82 isotone for which information about excited states is available. The results, interpreted using state-of-the-art nuclear shell-model calculations, show no evidence of an N=82 shell quenching at Z=48. They allow us to follow nuclear isomerism throughout a full major neutron shell from Cd-98(50) to Cd-130(82) and reveal, in comparison with Ni-76(48) one major proton shell below, an apparently abnormal scaling of nuclear two-body interactions.

    OJ Roberts, AM Bruce, Z Patel, Z Podolyák, PH Regan, CM Townsley, A Smith, KF Mulholland, JF Smith (2013)Development of a LaBr3(Ce) Fast-timing Array for FAIR, In: EPJ Web of Conferences63

    A γ-ray spectrometer with fast-timing capabilities, constructed of LaBr3(Ce:5%) detectors, is under development for use at the future Facility for Anti-proton and Ion Research (FAIR). The physics aims of this device are to measure the half-lives of excited states in the region of ∼50 ps to several ns, in exotic nuclei. Monte-Carlo simulations using the GEANT4 software package have determined the final design of this fast-timing array by calculating the full-energy peak efficiencies of several different detector geometries. The results of the simulated efficiencies for each configuration were used to calculate the timing precision. Consequently, an array of thirty six, ø3.8×5.1 cm cylindrical crystals was found to be the optimum configuration. The detectors were purchased and subsequently characterised, with each detector found to have intrinsic energy and timing resolutions of ∼ 2.8 % (FWHM) and ∼ 210 ps (FWHM) for the 1173 and 1332 keV decays from 60Co. © Owned by the authors, published by EDP Sciences, 2013.

    N Orce, AM Bruce, A Emmanouilidis, AP Byrne, GD Dracoulis, JC Hazel, T Kibedi, PM Walker, Z Podolyak, M Caamano, H El-Masri, C Wheldon, DM Cullen (2002)Study of the K-pi=8(-) isomeric decay in the N=74 isotone Xe-128, In: PROGRESS OF THEORETICAL PHYSICS SUPPLEMENT(146)pp. 611-612
    G Viesti, V Rizzi, M Cinausero, N Gelli, A Gadea, D Bazzacco, A Algora-Pineda, D Appelbee, G De Angelis, N Belcari, M De Poli, TE Drake, D Fabris, E Farnea, E Fioretto, A Galindo-Uribarri, W Krolas, T Kroll, F Lucarelli, S Lunardi, M Lunardon, T Martinez, R Menegazzo, BK Nayak, G Nebbia, DR Napoli, B Nyako, C Petrache, Z Podolyak, G Prete, C Rossi Alvarez, P Spolaore, C Ur, K Zuber (2001)Observation of a double giant dipole resonance in fusion-evaporation reactions, In: Physical Review C - Nuclear Physics63(3)pp. 346111-346115

    The emission of two coincident energetic (E≥8 MeV) gamma rays has been observed in the 187 MeV 37Cl+ 120Sn reaction by using the cluster detectors of the EUROBALL III array. Those events are attributed to the decay of the double giant dipole resonance built on highly excited states.

    BS Nara Singh, R Wadsworth, P Boutachkov, A Blazhev, Z Liu, H Grawe, TS Brock, N Braun, M Go, S Pietri, D Rudolph, C Domingo-Pardo, SJ Steer, A Atac, L Bettermann, L Cáceres, K Eppinger, T Engert, T Faestermann, F Farinon, F Finke, K Geibel, J Gerl, R Gernhäuser, N Goel, A Gottardo, J Grȩbosz, C Hinke, R Hoischen, G Llie, H Iwasaki, J Jolie, A Kaşkaş, I Kojouharov, R Krücken, N Kurz, E Merchánt, C Nociforo, J Nyberg, M Pfützner, A Prochazka, Z Podolyák, PH Regan, P Reiter, S Rinta-Antila, C Scholl, H Schaffner, P-A Söderström, N Warr, H Weick, H-J Wollersheim, PJ Woods, F Nowacki, K Sieja (2011)Exotic nuclear studies around and below A=100, In: AIP Conference Proceedings1409pp. 19-24

    A RISING experiment with an aim to study exotic Cd nuclei was carried out at GSI‐FRS facility. Some preliminary results from this experiment are presented here. In particular, the β decay of 96Cd to 96Ag revealed the existence of a high spin isomer predicted a few decades ago. In this context, the structures of both these nuclei are discussed. Shell model calculations using the Gross‐Frenkel interaction are used to interpret the results.

    Z Podolyak, PG Bizzeti, AM Bizzeti-Sona, A Gadea, S Lunardi, D Bazzacco, A Dewald, A Algora, G de Angelis, M De Poli, E Farnea, DR Kasemann, T Klug, T Kroll, S Lenzi, T Martinez, DR Napoli, CM Petrache, R Peusquens, CR Alvarez, CA Ur, P Kleinheinz, J Blomqvist (2001)Competition between octupole and shell model states near the doubly closed Gd-146, In: INTERNATIONAL SYMPOSIUM ON NUCLEAR STRUCTURE PHYSICSpp. 391-392
    M A Najem, A Alrushoud, S M Jafari, Z Podolyak, N M Spyrou (2018)Dosimetric Properties of Varian TrueBeam with and without Flattening Filter: A Monte Carlo Simulation University of Surrey
    M Sawicka, JM Daugas, H Grawe, S Cwiok, DL Balabanski, R Beraud, C Bingham, C Borcea, M La Commara, G de France, G Georgiev, M Gorska, R Grzywacz, M Hass, M Hellstrom, Z Janas, M Lewitowicz, H Mach, I Matea, G Neyens, C O'Leary, FD Santos, RD Page, M Pfutzner, Z Podolyak, K Rykaczewski, M Stanoiu, J Zylicz (2003)Isomeric decay of Fe-67 - Evidence for deformation, In: EUROPEAN PHYSICAL JOURNAL A16(1)pp. 51-54 SPRINGER-VERLAG
    C Wheldon, JJ Valiente-Dobon, PH Regan, CJ Pearson, CY Wu, JF Smith, AO Macchiavelli, D Cline, RS Chakrawarthy, R Chapman, M Cromaz, P Fallon, SJ Freeman, W Gelletly, AG Goergen, AB Hayes, H Hua, SD Langdown, IY Lee, X Liang, Z Podolyak, G Sletten, R Teng, D Ward, DD Warner, AD Yamamoto (2006)Observation of an isomeric state in Au-197, In: PHYSICAL REVIEW C74(2)ARTN 0pp. ?-? AMERICAN PHYSICAL SOC
    G A Jones, P H Regan, Z Podolyak, N Yoshinaga, K Higashiyama, G de Angelis, Y H Zhang, A Gadea, C A Ur, M Axiotis, D Bazzacco, D Bucurescu, E Farnea, W Gelletly, M Ionescu-Bujor, A Lordachescu, T Kroll, S D Langdown, S Lenzi, S Lunardi, N Marginean, T Martinez, N H Medina, R Menegazzo, D R Napoli, B Quintana, B Rubio, C Rusu, R Schwenger, D Tonev, J J Doban, W van Oertzen (2007)Yrast Studies of Se-80,Se-82 Using Deep-Inelastic Reactions, In: Physical Review C76(5)

    We report the results of an experiment in which we studied the near-yrast states in selenium isotopes approaching N=50 following their population in multinucleon transfer reactions between a Se-82 beam and a Os-192 target. The level schemes for Se-80,Se-82 derived from the current work are compared with restricted-basis shell-model calculations and pair-truncated shell-model calculations. These provide a good description of the yrast sequences in these nuclei using a basis space limited to excitations in the nu(p3/2, p1/2, p1/2) and pi(f5/2, p3/2, p1/2) orbitals.

    N Al-Dahan, Z Podolyák, PH Regan, SJ Steer, AMD Bacelar, N Alkhomashi, M Górska, J Gerl, HJ Wollersheim, SB Pietri, H Grawe, AY Deo, G Farrelly, P Boutachkov, C Domingo-Pardo, A Algora, J Benlliure, A Bracco, AM Bruce, E Calore, E Casarejos, IJ Cullen, P Detistov, Z Dombrádi, M Doncel, F Farinon, H Geissel, W Gelletly, N Goel, J Grebosz, R Hoischen, I Kojouharov, N Kurz, S Lalkovski, S Leoni, F Molina, D Montanari, AI Morales, A Musumarra, DR Napoli, R Nicolini, C Nociforo, A Prochazka, W Prokopowicz, B Rubio, D Rudolph, H Schaffner, P Strmen, I Szarka, T Swan, JJ Valiente-Dobon, S Verma, PM Walker, H Weick (2009)Isomeric states in 208Hg and 209Tl populated in fragmentation of 238U, In: Acta Physica Polonica B40(3)pp. 871-874 Jagellonian University

    The nuclear structure of neutron-rich N > 126 nuclei has been investigated following their production via relativistic projectile fragmentation of a E/A = 1 GeV (238)U beam on a Be target. The preliminary analysis indicates the presence of previously unreported isomeric states in the N = 128 isotones (208)Hg and (209)Tl.

    S Lalkovski, AM Bruce, A Jungclaus, M Gorska, M Pfuetzner, L Caceres, F Naqvi, S Pietri, Z Podolyak, GS Simpson, K Andgren, P Bednarczyk, T Beck, J Benlliure, G Benzoni, E Casarejos, B Cederwall, FCL Crespi, JJ Cuenca-Garcia, IJ Cullen, AMD Bacelar, P Detistov, P Doornenbal, GF Farrelly, AB Garnsworthy, H Geissel, W Gelletly, J Gerl, J Grebosz, B Hadinia, M Hellstrom, C Hinke, R Hoischen, G Ilie, G Jaworski, J Jolie, A Khaplanov, S Kisyov, M Kmiecik, I Kojouharov, R Kumar, N Kurz, A Maj, S Mandal, V Modamio, F Montes, S Myalski, M Palacz, W Prokopowicz, P Reiter, PH Regan, D Rudolph, H Schaffner, D Sohler, SJ Steer, S Tashenov, J Walker, PM Walker, H Weick, E Werner-Malento, O Wieland, HJ Wollersheim, M Zhekova (2013)Core-coupled states and split proton-neutron quasiparticle multiplets in Ag122-126, In: PHYSICAL REVIEW C87(3)ARTN 0pp. ?-? AMER PHYSICAL SOC
    L Chen, PM Walker, H Geissel, YA Litvinov, K Beckert, P Beller, F Bosch, D Boutin, L Caceres, JJ Carroll, DM Cullen, IJ Cullen, B Franzke, J Gerl, M Gorska, GA Jones, A Kishada, R Knoebel, C Kozhuharov, J Kurcewicz, SA Litvinov, Z Liu, S Mandal, F Montes, G Muenzenberg, F Nolden, T Ohtsubo, Z Patyk, WR Plass, Z Podolyak, S Rigby, N Saito, T Saito, C Scheidenberger, EC Simpson, M Shindo, M Steck, B Sun, SJ Williams, H Weick, M Winkler, H-J Wollersheim, T Yamaguchi (2013)Direct Observation of Long-Lived Isomers in Bi-212, In: PHYSICAL REVIEW LETTERS110(12)ARTN 1pp. ?-? AMER PHYSICAL SOC
    Z Marcinkowska, T Rzaca-Urban, C Droste, T Morek, B Czajkowska, W Urban, R Marcinkowski, P Olbratowski, RM Lieder, H Brans, W Gast, HM Jager, L Mihailescu, D Bazzacco, G Falconi, R Menegazzo, S Lunardi, C Rossi-Alvarez, G de Angelis, E Farnea, A Gadea, DR Napoli, Z Podolyak (2003)Magnetic rotation in the nucleus Eu-141, In: ACTA PHYSICA POLONICA B34(4)pp. 2319-2322
    YH Zhang, Z Podolyak, G de Angelis, A Gadea, C Ur, S Lunardi, N Marginean, C Rusu, R Schwengner, T Kroll, DR Napoli, R Menegazzo, D Bazzacco, E Farnea, S Lenzi, T Martinez, M Axiotis, D Tonev, W Gelletly, S Langdown, PH Regan, JJV Dobon, W von Oertzen, B Rubio, B Quintana, N Medina, R Broda, D Bucurescu, M Ionescu-Bujor, A Iordachescu (2004)Stability of the N=50 shell gap in the neutron-rich Rb, Br, Se, and Ge isotones, In: PHYSICAL REVIEW C70(2)ARTN 0pp. ?-? AMERICAN PHYSICAL SOC
    J N Orce, A M Bruce, A Emmanouilidis, A P Byrne, G D Dracoulis, T Kibedi, M Caamano, H El-Masri, C J Pearson, Z Podolyak, P D Stevenson, P M Walker, F R Xu, D M Cullen, C Wheldon (2006)Shape-Driving Effects in the Triaxial Nucleus, Xe-128, In: Physical Review C74(3)

    An extended decay scheme for Xe-128 has been constructed by using data from the Sn-124(Be-9, 5n)Xe-128 reaction at a beam energy of 58 MeV. Bands have been identified as being built on several intrinsic states, including a proposed 9/2(-)[514] circle times 1/2(+)[400] two-quasineutron configuration that forms the K-pi=5(-) intrinsic state at 2228 keV, and on a previously assigned K-pi=8(-) intrinsic state at 2786 keV. A half-life of 73(3) ns has been measured for the latter. Theoretical calculations have been performed by using the configuration-constrained blocking method based on a nonaxial Woods-Saxon potential. Large gamma deformation and gamma softness are predicted for the ground state and the K-pi=5(-) intrinsic state, whereas a nearly axially symmetric shape is predicted for the K-pi=8(-) two-quasiparticle configuration. The low value of the hindrance factor for the E1 transition depopulating the K-pi=8(-) intrinsic state is discussed in the context of analogous transitions in neighbouring N=74 isotones.

    D Bucurescu, CR Alvarez, CA Ur, N Marginean, P Spolaore, D Bazzacco, S Lunardi, DR Napoli, M IonescuBujor, A Iordachescu, CM Petrache, G deAngelis, A Gadea, D Foltescu, F Brandolini, G Falconi, E Farnea, SM Lenzi, NH Medina, Z Podolyak, M DePoli, MN Rao, R Venturelli (1997)Evolution of collectivity along the N=Z line: The Mo-84 nucleus, In: PHYSICAL REVIEW C56(5)pp. 2497-2501 AMERICAN PHYSICAL SOC
    D Bucurescu, CA Ur, SM Lenzi, DR Napoli, J Sanchez-Solano, D Bazzacco, F Brandolini, G de Angelis, E Farnea, A Gadea, S Lunardi, N Marginean, Z Podolyak, A Poves, CR Alvarez (2003)Band terminations in the nucleus Ti-46, In: PHYSICAL REVIEW C67(3)ARTN 03430 AMERICAN PHYSICAL SOC
    G A Jones, P H Regan, P M Walker, Z Podolyak, P D Stevenson, M P Carpenter, J J Carroll, R S Chakrawarthy, P Chowdhury, A B Garnsworthy, R V Janssens, T L Khoo, F G Kondev, G J Lane, Z Liu, D Seweryniak, N J Thompson, S Zhu, S J Williams (2007)Identification of a High-Spin Isomer in Mo-99, In: Physical Review C76(4)

    A previously unreported isomer has been identified in Mo-99 at an excitation energy of E-x = 3010 keV, decaying with a half-life of T-1/2 = 8(2) ns. The nucleus of interest was produced following fusion-fission reactions between a thick Al-27 target frame and a Hf-178 beam at a laboratory energy of 1150 MeV. This isomeric state is interpreted as an energetically favored, maximally aligned configuration of nu h (11/2) circle times pi(g (9/2))(2).

    D Bucurescu, N Marginean, C R Alvarez, Y Sun, C A Ur, L C Mihailescu, G Suliman, D Bazzacco, S Lunardi, G de Angelis, M Axiotis, E Farnea, A Gadea, M Ionescu-Bujor, A Iordachescu, W Krolas, T Kroll, S M Lenzi, T Martinez, R Menegazzo, D R Napoli, P Pavan, Z Podolyak, C Rusu, M De Poli, B Quintana, P Spolaore (2004)High-Spin States in Ru-90 and the Projected Shell Model Description, In: Physical Review C69(6)

    The neutron deficient Asimilar to90 nuclei constitute a good testing ground for shell model approaches based on spherical or deformed basis. New experimental data are presented for the Ru-90 nucleus, as obtained with the reaction Ca-40+Ni-58 at 135 MeV. The yrast band has been extended to higher spin states and a new band, tentatively assigned as a negative parity band, has been identified. The observed structures are compared with predictions of the projected shell model, which uses a deformed basis. Possibility of the occurrence of low-lying high- K states in this nucleus is discussed.

    JN Wilson, M Lebois, L Qi, P Amador-Celdran, D Bleuel, JA Briz, R Carroll, Wilton Catford, H De Witte, D Doherty, R Eloirdi, G Georgiev, A Gottardo, A Goasduff, K Hadynska-Klek, K Hauschild, M Hess, V Ingeberg, T Konstantinopoulos, J Ljungvall, A Lopez-Martens, G Lorusso, R Lozeva, R Lutter, P Marini, I Matea, T Materna, L Mathieu, A Oberstedt, S Oberstedt, S Panebianco, Zsolt Podolyak, D Porta, Patrick Regan, P Reiter, K Rezynkina, SJ Rose, E Sahin, M Seidlitz, Robert Shearman, B Siebeck, S Siem, AG Smith, GM Tveten, D Verney, N Warr, F Zeiser, M Zielinska (2017)PRODUCTION AND STUDY OF NEUTRON-RICH NUCLEI USING THE LICORNE DIRECTIONAL NEUTRON SOURCE, In: Acta Physica Polonica B48(3)pp. 395-401 Państwowe Wydawn. Naukowe

    We have recently successfully demonstrated a new technique for production and study of many of the most exotic neutron-rich nuclei at moderate spins. LICORNE, a newly developed directional inverse-kinematic fast neutron source at the IPN Orsay, was coupled to the MINIBALL high resolution -ray spectrometer to study nuclei the furthest from stability using the 238U(n; f) reaction. This reaction and 232Th(n; f) are the most neutron-rich fission production mechanisms achievable and can be used to simultaneously populate hundreds of neutron-rich nuclei up to spins of 16 ~. High selectivity in the experiment was achieved via triple -ray coincidences and the use of a 400 ns period pulsed neutron beam, a technique which is unavailable to other population mechanisms such as 235U(nth; f) and 252Cf(SF). The pulsing allows time correlations to be exploited to separate delayed rays from isomeric states in the hundreds of nuclei produced, which are then used to cleanly select a particular nucleus and its exotic binary partners. In the recent experiment, several physics cases are simultaneously addressed such as shape coexistence, the evolution of shell closures far from stability, and the spectroscopy of nuclei in the r-process path near N = 82. Preliminary physics results on anomalies in the 238U(n; f) fission yields and the structure of the 138Te and 100Sr nuclei will soon be published. A future project, -ball, to couple LICORNE with a hybrid escape-suppressed spectrometer to refine further the technique and achieve a large increase in the observational limit is discussed.

    P Boutachkov, N Braun, T Brock, BSN Singh, A Blazhev, Z Liu, R Wadsworth, M Górska, H Grawe, S Pietri, C Domingo-Pardo, T Faestermann, F Farinon, J Grebosz, I Kojuharov, N Kurz, C Nociforo, Z Podolyák, A Prochazka, S Steer, L Cáceres, T Engert, J Gerl, N Goel, R Hoischen, H Schaffner, H Weick, HJ Wollersheim, L Bettermann, F Finke, K Geibel, G Ilie, H Iwasaki, J Jolie, J Nyberg, P Reiter, C Scholl, PA Söderström, N Warr, K Eppinger, A Gottardo, C Hinke, R Krücken, M Pfützner, P Regan, S Rinta-Antila, D Rudolph, P Woods, A Ataç, E Merchán (2011)Isomer and β-decay spectroscopy of Tz=1 isotopes below the N=Z=50 shell gap, In: Journal of Physics: Conference Series312(SECTIO)

    The RISING setup at the GSI-FRS facility was used to investigate the isomer and beta decays in N∼Z∼50 Cd, Ag and Pd isotopes. A preliminary analysis of the data has revealed new results on the Tz=1, 94Pd, 96Ag and 98Cd isotopes. In 94Pd a new high-spin isomer was observed, whilst in 96Ag 3 new isomeric states were identified, including core-excited states. In 98Cd a new high-energy isomeric γ-ray transition is observed, thus enabling us to confirm the previous spin assignment for the core-excited 12+ isomer.

    P-A Soderstrom, J Nyberg, PH Regan, A Algora, G de Angelis, SF Ashley, S Aydin, D Bazzacco, RJ Casperson, WN Catford, J Cederkall, R Chapman, L Corradi, C Fahlander, E Farnea, E Fioretto, SJ Freeman, A Gadea, W Gelletly, A Gottardo, E Grodner, CY He, GA Jones, K Keyes, M Labiche, X Liang, Z Liu, S Lunardi, N Marginean, P Mason, R Menegazzo, D Mengoni, G Montagnoli, D Napoli, J Ollier, S Pietri, Z Podolyak, G Pollarolo, F Recchia, E Sahin, F Scarlassara, R Silvestri, JF Smith, K-M Spohr, SJ Steer, AM Stefanini, S Szilner, NJ Thompson, GM Tveten, CA Ur, JJ Valiente-Dobon, V Werner, SJ Williams, FR Xu, JY Zhu (2010)Spectroscopy of neutron-rich Dy-168,Dy-170: Yrast band evolution close to the NpNn valence maximum, In: PHYSICAL REVIEW C81(3)ARTN 0pp. ?-? AMER PHYSICAL SOC
    J Kurcewicz, F Farinon, H Geissel, S Pietri, C Nociforo, A Prochazka, H Weick, JS Winfield, A Estradé, I Dillmann, A Evdokimov, J Gerl, E Gregor, A Kelić-Heil, R Knöbel, Y Litvinov, E Merchan, I Mukha, F Naqvi, M Pfützner, B Riese, MV Ricciardi, C Scheidenberger, P Spiller, J Stadlmann, S Terashima, M Winkler, F Farinon, H Geissel, A Prochazka, I Dillmann, A Evdokimov, B Riese, C Scheidenberger, B Sun, A Estradé, PRP Allegro, A Bail, G Bélier, J Taïeb, J Benlliure, G Benzoni, M Bunce, M Bowry, Z Podolyák, PH Regan, R Caballero-Folch, A Gottardo, JJ Valiente-Dobón, R Janik, B Sitar, P Strmen, I Szarka, T Kubo, S Terashima, Y Litvinov, E Merchan, F Naqvi, M Pfützner, M Pomorski, B Sun, P Woods (2012)Discovery and cross-section measurement of neutron-rich isotopes in the element range from neodymium to platinum with the FRS, In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics717(4-5)pp. 371-375 ELSEVIER SCIENCE BV

    Using the high-resolution performance of the fragment separator FRS at GSI we have discovered 60 new neutron-rich isotopes in the atomic number range of 60≥Z≥78. The new isotopes were unambiguously identified in reactions with a U238 beam impinging on a Be target at 1 GeV/nucleon. The production cross-section for the new isotopes have been measured down to the pico-barn level and compared with predictions of different model calculations. For elements above hafnium fragmentation is the dominant reaction mechanism which creates the new isotopes, whereas fission plays a dominant role for the production of the new isotopes up to thulium. © 2012 Elsevier B.V.

    AB Garnsworthy, NJ Thompson, Z Podolyak, PM Walker, SJ Williams, GD Dracoulis, G de France, GJ Lane, K Andgren, AM Bruce, AP Byrne, WN Catford, B Cederwall, GA Jones, B McGuirk, S Mandal, ES Paul, V Pucknell, N Redon, B Rosse, RJ Senior, G Sletten (2005)Spectroscopy of Po-212 and At-213 using a He-8 radioactive beam and EXOGAM, In: JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS31(10)pp. S1851-S1854
    M. Stryjczyk, B. Andel, A.N Andreyev, J. Cubiss, J. Pakarinen, K. Rezynkina, P. Van Duppen, S. Antalic, T. Berry, M.J.G Borge, C. Clisu, D.M Cox, H. De Witte, L.M Fraile, H.O.U Fynbo, L.P Gaffney, L.J Harkness-Brennan, M. Huyse, A. Illana, D.S Judson, J. Konki, J. Kurcewicz, I. Lazarus, R. Lica, M. Madurga, N. Marginean, R. Marginean, C. Mihai, P. Mosat, E. Nacher, A. Negret, J. Ojala, J.D Ovejas, R.D Page, P. Papadakis, S. Pascu, A. Perea, Zsolt Podolyak, V. Pucknell, E. Rapisarda, F. Rotaru, Ch. Sotty, O. Tengblad, V. Vedia, S. Vinals, R. Wadsworth, N. Warr, K. Wrzosek-Lipska (2020)Decay studies of the long-lived states in 186 Tl, In: Physical Review C American Physical Society

    Decay spectroscopy of the long-lived states in 186Tl has been performed at the ISOLDE Decay Station at ISOLDE, CERN. The decay from the low-spin (2

    A Wendt, J Taprogge, P Reiter, P Golubev, H Grawe, S Pietri, P Boutachkov, A Algora, F Ameil, MA Bentley, A Blazhev, D Bloor, NS Bondili, M Bowry, A Bracco, N Braun, F Camera, J Cederkall, F Crespi, A de la Salle, D DiJulio, P Doornenbal, K Geibel, J Gellanki, J Gerl, J Grebosz, G Guastalla, T Habermann, M Hackstein, R Hoischen, A Jungclaus, E Merchan, B Million, A Morales, K Moschner, Z Podolyak, N Pietralla, D Ralet, M Reese, D Rudolph, L Scruton, B Siebeck, N Warr, O Wieland, HJ Wollersheim (2014)Isospin symmetry in the sd shell: Transition strengths in the neutron-deficient sd shell nucleus Ar-33, In: Physical Review C - Nuclear Physics90(5)ARTN 0pp. ?-? American Physical Society

    Reduced transition strengths of the deexciting transitions from the first two excited states in 33Ar were measured in a relativistic Coulomb excitation experiment at the GSI Helmholtz center. The radioactive ion beam was produced by fragmentation of a primary 36Ar beam on a 9Be target followed by the selection of the reaction product of interest via the GSI Fragment Separator. The 33Ar beam hit a secondary 197Au target with an energy of approximately 145 MeV/nucleon. An array of high-purity germanium cluster detectors and large-volume BaF2 scintillator detectors were employed for γ -ray spectroscopy at the secondary target position. The Lund-York-Cologne Calorimeter was used to track the outgoing ions and to identify the nuclear reaction channels. For the two lowest energy excited states of 33Ar the reduced transition strengths have been determined. With these first results the Tz = −3/2 nucleus 33Ar is now, together with 21Na (Tz = −1/2), the only neutron-deficient odd-A sd shell nucleus in which experimental transition strengths are available. The experimental values are compared to results of shell-model calculations which describe simultaneously mirror-energy differences and transition-strength values of mirror pairs in the sd shell in a consistent way

    PR John, V Modamio, JJ Valiente-Dobon, D Mengoni, S Lunardi, TR Rodriguez, D Bazzacco, A Gadea, C Wheldon, T Alexander, G de Angelis, N Ashwood, M Barr, G Benzoni, B Birkenbach, PG Bizzeti, AM Bizzeti-Sona, S Bottoni, M Bowry, A Bracco, F Browne, M Bunce, F Camera, B Cederwall, L Corradi, FCL Crespi, P Desesquelles, J Eberth, E Farnea, E Fioretto, A Goergen, A Gottardo, J Grebosz, L Grente, H Hess, A Jungclaus, T Kokalova, A Korichi, W Korten, A Kusoglu, S Lenzi, S Leoni, J Ljungvall, G Maron, W Meczynski, B Melon, R Menegazzo, C Michelagnoli, T Mijatovic, B Million, P Molini, G Montagnoli, D Montanari, DR Napoli, P Nolan, C Oziol, Z Podolyak, G Pollarolo, A Pullia, B Quintana, F Recchia, P Reiter, OJ Roberts, D Rosso, E Sahin, M-D Salsac, F Scarlassara, M Sferrazza, J Simpson, P-A Soderstrom, AM Stefanini, O Stezowski, S Szilner, C Theisen, CA Ur, J Walshe (2014)Shape evolution in the neutron-rich osmium isotopes: Prompt gamma-ray spectroscopy of Os-196, In: Physical Review C - Nuclear Physics90(2)ARTN 0pp. ?-? American Physical Society

    The shape transition in the neutron-rich Os isotopes is studied by investigating the neutron-rich 196Os nucleus through in-beam γ-ray spectroscopy using a two-proton transfer reaction from a 198Pt target to a 82Se beam. The beam-like recoils were detected and identified with the large-acceptance magnetic spectrometer PRISMA, and the coincident γ rays were measured with the advanced gamma tracking array (AGATA) demonstrator. The de-excitation of the low-lying levels of the yrast-band of 196Os were identified for the first time. The results are compared with state-of-the-art beyond-mean-field calculations, performed for the even-even 188-198Os isotopes. The new results suggest a smooth transition in the Os isotopes from a more axial rotational behavior towards predominately vibrational nuclei through triaxial configurations. An almost perfect γ-unstable/triaxial rotor yrast band is predicted for 196Os which is in agreement with the experimentally measured excited states

    L. Kaya, A. Vogt, P. Reiter, C. Müller-Gatermann, A. Gargano, L. Coraggio, N. Itaco, A. Blazhev, K. Arnswald, D. Bazzacco, B. Birkenbach, A. Bracco, B. Bruyneel, L. Corradi, F. C. L. Crespi, G. de Angelis, M. Droste, J. Eberth, E. Farnea, E. Fioretto, C. Fransen, A. Gadea, A. Giaz, A. Görgen, A. Gottardo, K. Hadyńska-Klęk, H. Hess, R. Hetzenegger, R. Hirsch, P. R. John, J. Jolie, A. Jungclaus, W. Korten, S. Leoni, L. Lewandowski, S. Lunardi, R. Menegazzo, D. Mengoni, C. Michelagnoli, T. Mijatović, G. Montagnoli, D. Montanari, D. Napoli, Zsolt Podolyak, G. Pollarolo, F. Recchia, D. Rosiak, N. Saed-Samii, E. Şahin, M. Siciliano, F. Scarlassara, M. Seidlitz, P.-A. Söderström, A. M. Stefanini, O. Stezowski, S. Szilner, B. Szpak, C. Ur, J. J. Valiente-Dobón, M. Weinert, K. Wolf, K. O. Zell (2019)Identification of high-spin proton configurations in Ba136 and Ba137, In: Physical Review C99(1)014301 American Physical Society

    The high-spin structures of 136Ba and 137Ba are investigated after multinucleon-transfer (MNT) and fusion-evaporation reactions. 136Ba is populated in a 136Xe+238U MNT reaction employing the high-resolution Advanced GAmma Tracking Array (AGATA) coupled to the magnetic spectrometer PRISMA at the Laboratori Nazionali di Legnaro, Italy, and in two 9Be + 130Te fusion-evaporation reactions using the High-efficiency Observatory for -Ray Unique Spectroscopy (HORUS) at the FN tandem accelerator of the University of Cologne, Germany. Furthermore, both isotopes are populated in an elusive reaction channel in the 11B+130Te fusion-evaporation reaction utilizing the HORUS -ray array. The level scheme above the J = 10+ isomer in 136Ba is revised and extended up to an excitation energy of approx. 5.5 MeV. From the results of angular-correlation measurements, the Ex = 3707- and Ex = 4920-keV states are identified as the bandheads of positive- and negative-parity cascades. While the high-spin regimes of both 132Te and 134Xe are characterized by high-energy 12+ ! 10+ transitions, the 136Ba E2 ground-state band is interrupted by negativeparity states only a few hundred keV above the J = 10+ isomer. Furthermore, spins are established for several hitherto unassigned high-spin states in 137Ba. The new results close a gap along the highspin structure of N < 82 Ba isotopes. Experimental results are compared to large-scale shell-model calculations employing the GCN50:82, Realistic SM, PQM130 and SN100PN interactions. The calculations suggest that the bandheads of the positive-parity bands in both isotopes are predominantly of proton character.

    A Akber, MW Reed, PM Walker, YA Litvinov, GJ Lane, T Kibedi, K Blaum, F Bosch, C Brandau, JJ Carroll, DM Cullen, IJ Cullen, AY Deo, B Detwiler, C Dimopoulou, GD Dracoulis, F Farinon, H Geissel, E Haettner, M Heil, RS Kempley, R Knoebel, C Kozhuharov, J Kurcewicz, N Kuzminchuk, S Litvinov, Z Liu, R Mao, C Nociforo, F Nolden, WR Plass, Z Podolyak, A Prochazka, C Scheidenberger, D Shubina, M Steck, T Stoehlker, B Sun, TPD Swan, G Trees, H Weick, N Winckler, M Winkler, PJ Woods, T Yamaguchi (2015)Increased isomeric lifetime of hydrogen-like Os-192m, In: PHYSICAL REVIEW C91(3)ARTN 0pp. ?-? AMER PHYSICAL SOC
    MJ Taylor, G Hammond, MA Bentley, F Becker, J Grebosz, A Banu, CJ Barton, T Beck, P Bednarczyk, A Bracco, AM Bruce, LC Bullock, A Burger, F Camera, C Chandler, P Doornenbal, J Gerl, H Geissel, M Gorska, M Hellstrom, DS Judson, I Kojouharov, N Kurz, R Lozeva, A Maj, S Mandal, B McGuirk, S Muralithar, ES Paul, Z Podolyak, W Prokopowicz, D Rudolph, N Saito, TR Saito, H Schaffner, J Simpson, DD Warner, H Weick, C Wheldon, M Winkler, HJ Wollersheim (2005)Spectroscopy of nuclei approaching the proton drip-line using a secondary-fragmentation technique with the RISING detector array, In: JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS31(10)pp. S1527-S1530
    G A Jones, S J Williams, P M Walker, Z Podolyak, S Zhu, M P Carpenter, J J Carroll, R S Chakrawarthy, P Chowdhury, I J Cullen, G D Dracoulis, A B Garnsworthy, G Hackman, R V Janssens, T L Khoo, F G Kondev, G J Lane, Z Liu, D Seweryniak, N J Thompson (2008)High-Spin, Multiparticle Isomers in Sb-121,Sb-123, In: Physical Review C77(3)

    Isomers in near-spherical Z = 51, antimony isotopes are reported here for the first time using fusion-fission reactions between Al-27 and a pulsed Hf-178 beam of energy, 1150 MeV. gamma rays were observed from the decay of isomeric states with half-lives, T-1/2 = 200(30) and 52(3) mu s, and angular momenta I = (25/2) and I-pi = 23(+)/2, in Sb-121,Sb-123, respectively. These states are proposed to correspond to nu(h(11/2))(2) configurations, coupled to an odd d(5/2) or g(7/2) proton. Nanosecond isomers were also identified at I-pi = 19(-)/2 [T-1/2 = 8.5(5) ns] in Sb-121 and I-pi = (15(-)/2) [T-1/2 = 37(4) ns] in Sb-123. Information on spins and parities of states in these nuclei was obtained using a combination of angular correlation and intensity-balance measurements. The configurations of states in these nuclei are discussed using a combination of spin/energy systematics and shell-model calculations for neighboring tin isotones and antimony isotopes.

    E Wilson, Z Podolyak, H Grawe, BA Brown, CJ Chiara, S Zhu, B Fornal, RVF Janssens, CM Shand, M Bowry, M Bunce, MP Carpenter, N Cieplicka-Orynczak, AY Deo, GD Dracoulis, CR Hoffman, RS Kempley, FG Kondev, GJ Lane, T Lauritsen, G Lotay, MW Reed, PH Regan, CR Triguero, D Seweryniak, B Szpak, PM Walker (2015)Core excitations across the neutron shell gap in Tl-207, In: PHYSICS LETTERS B747pp. 88-92 ELSEVIER SCIENCE BV

    The single closed-neutron-shell, one proton-hole nucleus 207Tl was populated in deep-inelastic collisions of a 208Pb beam with a 208Pb target. The yrast and near-yrast level scheme has been established up to high excitation energy, comprising an octupole phonon state and a large number of core excited states. Based on shell-model calculations, all observed single core excitations were established to arise from the breaking of the N=126 neutron core. While the shell-model calculations correctly predict the ordering of these states, their energies are compressed at high spins. It is concluded that this compression is an intrinsic feature of shell-model calculations using two-body matrix elements developed for the description of two-body states, and that multiple core excitations need to be considered in order to accurately calculate the energy spacings of the predominantly three-quasiparticle states.

    M Lettmann, V Werner, N Pietralla, P Doornenbal, A Obertelli, TR Rodríguez, K Sieja, G Authelet, H Baba, D Calvet, F Château, S Chen, A Corsi, A Delbart, J-M Gheller, A Giganon, A Gillibert, V Lapoux, T Motobayashi, M Niikura, N Paul, J-Y Roussé, H Sakurai, C Santamaria, D Steppenbeck, R Taniuchi, T Uesaka, T Ando, T Arici, A Blazhev, F Browne, A Bruce, RJ Caroll, LX Chung, ML Cortés, M Dewald, B Ding, F Flavigny, S Franchoo, M Górska, A Gottardo, A Jungclaus, J Lee, BD Linh, J Liu, Z Liu, C Lizarazo, S Momiyama, K Moschner, S Nagamine, N Nakatsuka, C Nita, CR Nobs, L Olivier, Z Patel, Zsolt Podolyak, Matthias Rudigier, T Saito, Callum Shand, P-A Söderström, I Stefan, V Vaquero, K Wimmer, Z Xu (2017)Triaxiality of neutron-rich 84;86;88Ge from low-energy nuclear spectra, In: Physical Review C96(1)011301(R) American Physical Society

    -ray transitions between low-spin states of the neutron-rich 84;86;88Ge were measured by means of in-flight -ray spectroscopy at 270 MeV/u. Excited 6+ 1 , 4+ 1;2 and 2+ 1;2 states of 84;86Ge and 4+ 1 and 2+ 1;2 states of 88Ge were observed. Furthermore a candidate for a 3+ 1 state of 86Ge was identified. This state plays a key role in the discussion of ground-state triaxiality of 86Ge, along with other features of its low-energy level scheme. A new region of triaxially deformed nuclei is proposed in the Ge isotopic chain.

    JRB Oliveira, F Falla-Sotelo, MN Rao, JA Alcantara-Nunez, EW Cybulska, NH Medina, RV Ribas, MA Rizzutto, WA Seale, D Bazzacco, F Brandolini, S Lunardi, C Rossi-Alvarez, C Petrache, Z Podolyak, CA Ur, D de Acuna, G de Angelis, E Farnea, D Foltescu, A Gadea, DR Napoli, M de Poli, P Spolaore, M Ionescu-Bujor, A Iordachescu (2006)High-K band in Gd-140, In: BRAZILIAN JOURNAL OF PHYSICS36(4B)pp. 1371-1374
    Laila Gurgi, Patrick Regan, P-A Söderström, H Watanabe, Philip Walker, Zsolt Podolyak, S Nishimura, Thomas Berry, P Doornenbal, G Lorusso, T Isobe, H Baba, ZY Xu, H Sakurai, T Sumikama, Wilton Catford, AM Bruce, F Browne, GJ Lane, FG Kondev, A Odahara, J Wu, HL Liu, FR Xu, Z Korkulu, P Lee, JJ Liu, VH Phong, A Yagi, GX Zhang, T Alharbi, RJ Carroll, KY Chae, Z Dombradi, A Estrade, N Fukuda, C Griffin, E Ideguchi, N Inabe, H Kanaoka, I Kojouharov, T Kubo, S Kubono, N Kurz, I Kuti, S Lalkovski, EJ Lee, CS Lee, Gavin Lotay, CB Moon, I Nishizuka, CR Nita, Z Patel, OJ Roberts, H Schaffner, Callum Shand, H Suzuki, H Takeda, S Terashima, Z Vajta, S Kanaya, J-J Valiente-Dobón (2017)Isomer Spectroscopy of Neutron-rich 165,167Tb, In: Acta Physica Polonica B48(3)pp. 601-608

    We present information on the excited states in the prolate-deformed, neutron-rich nuclei 165;167Tb100;102. The nuclei of interest were synthesised following in-flight fission of a 345 MeV per nucleon 238U primary beam on a 2 mm 9Be target at the Radioactive Ion-Beam Factory (RIBF), RIKEN, Japan. The exotic nuclei were separated and identified event-by-event using the BigRIPS separator, with discrete energy gamma-ray decays from isomeric states with half-lives in the s regime measured using the EURICA gamma-ray spectrometer. Metastable-state decays are identified in 165Tb and 167Tb and interpreted as arising from hindered E1 decay from the 7 2 [523] single quasi-proton Nilsson configuration to rotational states built on the 3 2 [411] single quasi-proton ground state. These data correspond to the first spectroscopic information in the heaviest, odd-A terbium isotopes reported to date and provide information on proton Nilsson configurations which reside close to the Fermi surface as the 170Dy doubly-midshell nucleus is approached.

    N Alkhomashi, PH Regan, Z Podolyak, S Pietri, AB Garnsworthy, SJ Steer, J Benlliure, E Caserejos, RF Casten, J Gerl, HJ Wollersheim, J Grebosz, G Farrelly, M Gorska, I Kojouharov, H Schaffner, A Algora, G Benzoni, A Blazhev, P Boutachkov, AM Bruce, AMD Bacelar, IJ Cullen, L Caceres, P Doornenbal, ME Estevez, Y Fujita, W Gelletly, R Hoischen, R Kumar, N Kurz, S Lalkovski, Z Liu, C Mihai, F Molina, AI Morales, D Muecher, W Prokopowicz, B Rubio, Y Shi, A Tamii, S Tashenov, JJ Valiente-Dobon, PM Walker, PJ Woods, FR Xu (2009)beta(-)-delayed spectroscopy of neutron-rich tantalum nuclei: Shape evolution in neutron-rich tungsten isotopes, In: PHYSICAL REVIEW C80(6)ARTN 0pp. ?-? AMER PHYSICAL SOC
    J Taprogge, A Jungclaus, H Grawe, S Nishimura, P Doornenbal, G Lorusso, GS Simpson, P-A Soederstroem, T Sumikama, ZY Xu, H Baba, F Browne, N Fukuda, R Gernhaeuser, G Gey, N Inabe, T Isobe, HS Jung, D Kameda, GD Kim, Y-K Kim, I Kojouharov, T Kubo, N Kurz, YK Kwon, Z Li, H Sakurai, H Schaffner, K Steiger, H Suzuki, H Takeda, Z Vajta, H Watanabe, J Wu, A Yagi, K Yoshinaga, G Benzoni, S Boenig, KY Chae, L Coraggio, A Covello, J-M Daugas, F Drouet, A Gadea, A Gargano, S Ilieva, FG Kondev, T Kroell, GJ Lane, A Montaner-Piza, K Moschner, D Mucher, F Naqvi, M Niikura, H Nishibata, A Odahara, R Orlandi, Z Patel, Z Podolyak, A Wendt (2015)beta decay of Cd-129 and excited states in In-129, In: PHYSICAL REVIEW C91(5)ARTN 0pp. ?-? AMER PHYSICAL SOC
    Z Podolyak (2005)Isomeric decay studies with fragmentation beams, In: ACTA PHYSICA POLONICA B36(4)pp. 1269-1279
    PH Regan, C Wheldon, AD Yamamoto, JJ Valiente-Dobon, D Cline, CY Wu, AO Macchiavelli, FR Xu, JF Smith, K Andgren, RS Chakrawarthy, M Cromaz, P Fallon, SJ Freeman, A Gorgen, A Hayes, H Hua, SD Langdown, IY Lee, CJ Pearson, Z Podolyak, R Teng (2005)Vibrational and rotational sequences in Mo-101 and Ru-103,Ru-4 studied via multinucleon transfer reactions, In: ACTA PHYSICA POLONICA B36(4)pp. 1313-1322
    G Hammond, MA Bentley, F Becker, J Grebosz, MJ Taylor, A Banu, CJ Barton, T Beck, P Bednarczyk, A Bracco, AM Bruce, LC Bullock, A Burger, F Camera, C Chandler, P Doornenbal, J Gerl, H Geissel, M Gorska, M Hellstrom, D Judsond, I Kojouharov, N Kurz, R Lozeva, A Maj, S Mandal, B McGuirk, S Muralithar, ES Paul, Z Podolyak, W Prokopowicz, D Rudolph, N Saito, TR Saito, H Schaffner, J Simpson, DD Warner, H Weick, C Weldon, M Winkler, HJ Wollersheim (2005)Spectroscopy of T=3/2 mirror nuclei via two-step fragmentation using rising, In: ACTA PHYSICA POLONICA B36(4)pp. 1253-1257
    Matthias Rudigier, S Lalkovski, ER Gamba, AM Bruce, Zsolt Podolyak, Patrick Regan, M Carpenter, S Zhu, AD Ayangeakaa (2017)Fast Timing Measurement Using an LaBr3(Ce) Scintillator Detector Array Coupled with Gammasphere, In: Acta Physica Polonica B48(3)pp. 351-357

    A fast-timing experiment was performed at the Argonne National Laboratory in December 2015 and January 2016, measuring decay radiation of fission products from a 252Cf fission source. Details of the set-up, integration with Digital Gammasphere, and the data acquisition system are presented. The timing performance of the set-up, capable of measuring lifetimes from the nanosecond region down to tens of picoseconds, is discussed. First preliminary results from the fast-timing analysis of the fission fragment data are presented

    N Al-Dahan, Z Podolyak, PH Regan, SJ Steer, N Alkhomashi, AMD Bacelar, M Gorska, SB Pietri, W Gelletly, PM Walker, G Farrelly, AI Morales, AY Deo, IJ Cullen, J Gerl, C Domingo-Pardo, S Verma, T Swan, HJ Wollersheim, AM Bruce, S Lalkovski, J Benlliure, A Algora, P Boutachkov, A Bracco, E Calore, E Casarejos, P Detistov, Z Dombradi, M Doncel, F Farinon, H Geissel, N Goel, J Grebosz, R Hoischen, I Kojouharov, S Leoni, F Molina, D Montanari, A Musumarra, R Nicolini, DR Napoli, C Nociforo, B Rubio, A Prochazka, D Rudolph, P Strmen, I Szarka, JJ Valiente-Dobon, H Weick, A Blazhev, J Jolie, N Warr, A Zilges (2009)Structure of N >= 126 nuclei produced in fragmentation of (238)U, In: CAPTURE GAMMA-RAY SPECTROSCOPY AND RELATED TOPICS1090pp. 145-148
    E Wilson, Z Podolyak, B Fornal, RVF Janssens, M Bowry, M Bunce, MP Carpenter, CJ Chiara, N Cieplicka, AY Deo, GD Dracoulis, H Grawe, CR Hoffman, RS Kempley, FG Kondev, GJ Lane, T Lauritsen, MW Reed, PH Regan, CR Triguero, B Szpak, PM Walker, S Zhu (2013)CORE EXCITATIONS ACROSS THE NEUTRON SHELL GAP IN Tl-207, In: ACTA PHYSICA POLONICA B44(3)pp. 381-385 WYDAWNICTWO UNIWERSYTETU JAGIELLONSKIEGO

    Deep-inelastic collisions of a 208Pb beam on a 208Pb target were performed using the ATLAS accelerator at Argonne National Laboratory. Prompt and delayed γ-rays from the reaction products were detected using the GAMMASPHERE detector array. The cross-coincidence method was used to identify transitions in 207Tl, by gating on γ-rays from its better-characterised reaction partner 209Bi. A number of new transitions were found in 207Tl.

    Rachael Wood, Philip Walker, GJ Lane, RJ Carroll, DM Cullen, GD Dracoulis, SS Hota, T Kibédi, N Palalani, Zsolt Podolyak, MW Reed, K Schiffl, AM Wright (2017)Three-quasiparticle isomer in 173Ta and the excitation energy dependence of K-forbidden transition rates, In: Physical Review C95054308 American Physical Society

    Using the 168Er(10B,5n) reaction at a beam energy of 68 MeV, new data have been obtained for the population and decay of a T1/2 = 148 ns, Kπ = 21/2− three-quasiparticle isomer at 1717 keV in 173Ta. Revised decay energies and intensities have been determined, together with newly observed members of a rotational band associated with the isomer. By comparison with other isomers in the A ≈ 180 deformed region, the 173Ta isomer properties help to specify the key degrees of freedom that determine K-forbidden transition rates. In particular, when all three quasiparticles are of the same nucleon type, there is a strong dependence of the E2 reduced hindrance factor on the isomer excitation energy.

    A Burger, T Saito, A Al-Khatib, A Banu, T Beck, F Becker, P Bednarczyk, G Benzoni, A Bracco, P Bringel, F Camera, E Clement, P Doornenbal, H Geissel, J Gerl, M Gorska, A Gorgen, H Grawe, J Grebosz, G Hammond, M Hellstrom, H Hubel, M Kavatsyuk, O Kavatsyuk, M Kmiecik, I Kojouharov, N Kurz, R Lozeva, A Maj, S Mandal, W Meczynski, D Mehta, B Million, S Muralithar, A Neusser, Z Podolyak, TS Reddy, P Reiter, N Saito, H Schaffner, AK Singh, H Weick, O Wieland, C Wheldon, M Winkler, HJ Wollersheim (2005)Relativistic coulomb excitation of Cr-54,Cr-56,Cr-58, In: ACTA PHYSICA POLONICA B36(4)pp. 1249-1252
    S Franchoo, NL Achouri, A Algora, A Al-Khatib, J-C Angelique, F Azaiez, D Baiborodin, B Bastin, D Beaumel, M Belleguic, G Benzoni, Y Blumenfeld, C Borcea, R Borcea, C Bourgeois, P Bringel, BA Brown, A Burger, A Buta, R Chapman, E Clement, J-C Dalouzy, Z Dlouhy, Z Dombradi, A Drouart, Z Elekes, C Engelhardt, S Fortier, Z Fueloep, L Gaudefroy, M Gelin, J Gibelin, A Goergen, S Grevy, D Guillemaud-Mueller, F Hammache, H Huebel, S Iacob, F Ibrahim, K Kemper, A Kerek, W Korten, A Krasznahorkay, K-L Kratz, B Laurent, M Lazar, D Lebhertz, M Lewitowiczk, X Liang, E Lienard, S Lukyanov, S Mandal, C Monrozeau, J Mrazek, L Nalpas, A Navin, F Negoita, F Nowacki, N Orr, A Ostrowski, T Otsuka, D Pantelica, Y Penionzhkevich, J Piekarewicz, Z Podolyak, E Pollacco, F Pougheon, A Poves, F Rotaru, P Roussel-Chomaz, E Rich, J-A Scarpaci, M-G Saint-Laurent, H Savajols, G Sletten, D Sohler, O Sorlin, M Stanoiu, I Stefan, T Suzuki, C Theisen, J Timar, C Timis, E Tryggestad, D Verney, S Williams, A Yamamoto (2009)RECENT RESULTS FROM GANIL, In: ACTA PHYSICA POLONICA B40(3)pp. 419-425
    L Kaya, A Vogt, P Reiter, M Siciliano, B Birkenbach, A Blazhev, L Coraggio, E Teruya, N Yoshinaga, K Higashiyama, K Arnswald, D Bazzacco, A Bracco, B Bruyneel, L Corradi, F Crespi, G de Angelis, J Eberth, E Farnea, E Fioretto, C Fransen, B Fu, A Gadea, A Gargano, A Giaz, A Görgen, A Gottardo, Katarzyna Hadynska-Klek, H Hess, R Hetzenegger, R Hirsch, N Itaco, P John, J Jolie, A Jungclaus, W Korten, S Leoni, L Lewandowski, S Lunardi, R Menegazzo, D Mengoni, C Michelagnoli, T Mijatović, G Montagnoli, D Montanari, C Müller-Gatermann, D Napoli, Zsolt Podolyak, G Pollarolo, A Pullia, M Queiser, F Recchia, D Rosiak, N Saed-Samii, E Şahin, F Scarlassara, D Schneiders, M Seidlitz, B Siebeck, J Smith, P-A Söderström, A Stefanini, T Steinbach, O Stezowski, S Szilner, B Szpak, C Ur, J Valiente-Dobón, K Wolf, K Zell (2018)High-spin structure in the transitional nucleus 1 131Xe: Competitive neutron and proton alignment in the vicinity of the N = 82 shell closure, In: Physical Review C98(1)014309 American Physical Society

    The transitional nucleus 131Xe is investigated after multinucleon transfer (MNT) in the 136Xe+208Pb and 136Xe+238U reactions employing the high-resolution Advanced GAmma Tracking Array (AGATA) coupled to the magnetic spectrometer PRISMA at the Laboratori Nazionali di Legnaro, Italy and as an elusive reaction product in the fusion-evaporation reaction 124Sn(11B,p3n) 131Xe employing the HORUS γ-ray array coupled to a double-sided silicon strip detector (DSSSD) at the University of Cologne, Germany. The level scheme of 131Xe is extended to 5 MeV. A pronounced backbending is observed at ~ω ≈ 0.4 MeV along the negative-parity one-quasiparticle νh11/2(α = −1/2) band. The results are compared to the high-spin systematics of the Z = 54 isotopes and the N = 77 isotones. Large-scale shell-model calculations (LSSM) employing the PQM130, SN100PN, GCN50:82, SN100-KTH and a realistic effective interaction reproduce the experimental findings and provide guidance to elucidate the structure of the high-spin states. Further calculations in 129−132Xe provide insight into the changing nuclear structure along the Xe chain towards the N = 82 shell closure. Proton occupancy in the π 0h11/2 orbital is found to be decisive for the description of the observed backbending phenomenon.

    C. Lizarazo, P.A Soderstrom, V. Werner, N. Pietralla, P. Walker, G.X Dong, F.R Xu, T.R Rodriguez, F. Browne, P. Doornenbal, S. Nishimura, C.R Nita, A. Obertelli, T. Ando, T. Arici, G. Authelet, H. Baba, A. Blazhev, A.M Bruce, D. Calvet, R.J Caroll, F. Chateau, S. Chen, L.X Chung, A. Corsi, M.L Cortes, A. Delbart, M. Dewald, B. Ding, F. Flavigny, S. Franchoo, J. Gerl, J.M Gheller, A. Giagnon, A. Gillibert, M. Gorska, A. Gottardo, I. Kojouharov, N. Kurz, V. Lapoux, J. Lee, M. Lettmann, B.D Linh, J.J Liu, Z. Liu, S. Momiyama, K. Moschner, T. Motobayashi, S. Nagamine, N. Nakatsuka, M. Niikura, C. Nobs, L. Olivier, Z. Patel, N. Paul, Zsolt Podolyak, J.Y Rousse, M. Rudigier, T.Y Saito, H. Sakurai, C. Santamaria, H. Schaffner, C. Shand, I. Stefan, D. Steppenbeck, R. Taniuchi, T. Uesaka, V. Vaquero, K. Wimmer, Z. Xu (2020)Identification of an oblate K-isomer of 94Se60 and implications for a ground-state shape transition between N = 58 - 60, In: Physical Review Letters American Physical Society

    In this letter we report on new information on the shape evolution of the very neutron-rich 92;94Se nuclei from an isomer-decay spectroscopy experiment at the Radioactive Isotope Beam Factory at RIKEN. High-resolution germanium detectors were used to identify delayed -rays emitted following the decay of these nuclei. New transitions are reported extending the previously known level schemes. The isomeric levels are interpreted as originating from high-K quasi-neutron states with an oblate deformation of B ~ - 0:25, with the high-K state in 94Se being metastable and K hindered. Following this, 94Se is the lowest-mass nucleus known to date with K-forbidden decay and a substantial K hindrance. Furthermore, it is the first observation of an oblate K isomer in a deformed nucleus. From the decay patterns, an oblate deformation is suggested for the 94Se60 ground-state band, in line with the predictions of recent beyond-mean-field calculations.

    GA Jones, Z Podolyak, N Schunck, PM Walker, G De Angelis, YH Zhang, M Axiotis, D Bazzacco, PG Bizzeti, F Brandolini, R Broda, D Bucurescu, E Farnea, W Gelletly, A Gadea, M Ionescu-Bujor, A Iordachescu, T Kroll, SD Langdown, S Lunardi, N Marginean, T Martinez, NH Medina, B Quintana, PH Regan, B Rubio, CA Ur, JJ Valiente-Dobon, SJ Williams (2005)Oblate collectivity in the yrast structure of Pt-194, In: ACTA PHYSICA POLONICA B36(4)pp. 1323-1327
    PH Regan, N Alkhomashi, N Al-Dahan, Z Podolyak, EB Suckling, PD Stevenson, SB Pietri, SJ Steer, AB Garnsworthy, W Gelletly, J Benlliure, AI Morales, J Gerl, M Gorska, HJ Wollersheim, R Kumar, J Grebosz, A Algora, G Benzoni, P Boutachkov, AM Bruce, E Casarejos, IJ Cullen, AMD Bacelar, A Blazhev, ME Estevez, G Farrelly, Y Fujita, R Hoischen, S Lalkovski, Z Liu, I Kojouharov, N Kurz, C Mihai, F Molina, D Muecher, B Rubio, H Schaffner, S Tashenov, A Tamii, JJV Dobon, PM Walker, PJ Woods, A Blazhev, J Jolie, N Warr, A Zilges (2009)New Insights into the Structure of Exotic Nuclei Using the RISING Active Stopper, In: CAPTURE GAMMA-RAY SPECTROSCOPY AND RELATED TOPICS1090pp. 122-129
    Philip M. Walker, Zsolt Podolyak (2020)100 years of nuclear isomers - then and now., In: Physica Scripta95(4) IOP Publishing

    The suggestion that some atomic nuclei would be able to exist in more than one stable or metastable configuration was proposed by Soddy in 1917. Subsequently, the first experimental example of such an isomeric pair was reported by Hahn in 1921, in the form of two metastable states of 234Pa, then known as UZ and UX2. Nowadays, of the 3437 nuclides listed in the most recent NUBASE evaluation, 1318 have at least one metastable excited state with a half-life of 100 ns or longer. The present work reviews historical aspects of nuclear isomers, and the dfferent physical mechanisms that lead to their formation. Selected frontiers of contemporary isomer research are discussed, with an emphasis on remote regions of the nuclear landscape. Some possibilities for the electromagnetic manipulation of isomers are included.

    Z Podolyak, SJ Steer, S Pietri, E Werner-Malento, PH Regan, D Rudolph, AB Garnsworthy, R Hoischen, M Gorska, J Gerl, HJ Wollersheim, T Kurtukian-Nieto, G Benzoni, F Becker, P Bednarczyk, L Caceres, P Doornenbal, H Geissel, J Grebosz, A Kelic, I Kojouharov, N Kurz, F Montes, W Prokopowicz, T Saito, H Schaffner, S Tashenov, A Heinz, M Pfutzner, M Hellstrom, A Jungclaus, LL Andersson, L Atanasova, DL Balabanski, A Bentley, B Blank, A Blazhev, C Brandau, J Brown, AM Bruce, F Camera, WN Catford, IJ Cullen, Z Dombradi, E Estevez, C Fahlander, W Gelletly, G Ilie, EK Johansson, J Jolie, GA Jones, M Kmiecik, FG Kondev, S Lalkovski, Z Liu, A Maj, S Myalski, T Shizuma, AJ Simons, S Schwertel, PM Walker, O Wieland, BA Brown (2007)Isomeric decay studies around Pt-204 and Tb-148, In: EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS150pp. 165-168 EDP SCIENCES S A

    Relativistic energy projectile fragmentation of Pb-208 has been used to produce a range of exotic nuclei. The nuclei of interest were studied by detecting delayed gamma rays following the decay of isomeric states. Experimental information on the excited states of the neutron-rich N = 126 nucleus, Pt-204, following internal decay of two isomeric states, was obtained for the first time. In addition, decays from the previously reported isomeric I=27h and I=(49/2)h states in Tb-148 and Gd-147, respectively, have been observed. These isomeric decays represent the highest spin discrete states observed to date following a projectile fragmentation reaction, and opens further the possibility of doing 'high-spin physics' using this technique.

    V Modamio, JJ Valiente-Dobon, S Lunardi, SM Lenzi, A Gadea, D Mengoni, D Bazzacco, A Algora, P Bednarczyk, G Benzoni, B Birkenbach, A Bracco, B Bruyneel, A Burger, J Chavas, L Corradi, FCL Crespi, G de Angelis, P Desesquelles, G de France, R Depalo, A Dewald, M Doncel, MN Erduran, E Farnea, E Fioretto, C Fransen, K Geibel, A Gottardo, A Gorgen, T Habermann, M Hackstein, H Hess, T Hueyuek, PR John, J Jolie, D Judson, A Jungclaus, N Karkour, R Kempley, S Leoni, B Melon, R Menegazzo, C Michelagnoli, T Mijatovic, B Million, O Moeller, G Montagnoli, D Montanari, A Nannini, DR Napoli, Z Podolyak, G Pollarolo, A Pullia, B Quintana, F Recchia, P Reiter, D Rosso, W Rother, E Sahin, MD Salsac, F Scarlassara, K Sieja, PA Soderstrom, AM Stefanini, O Stezowski, S Szilner, C Theisen, B Travers, CA Ur (2013)Lifetime measurements in neutron-rich Co-63,Co-65 isotopes using the AGATA demonstrator, In: Physical Review C - Nuclear Physics88(4)ARTN 0pp. ?-? American Physical Society

    Lifetimes of the low-lying (11/2-) states in 63,65Co have been measured employing the recoil distance doppler shift method (RDDS) with the AGATA γ-ray array and the PRISMA mass spectrometer. These nuclei were populated via a multinucleon transfer reaction by bombarding a 238U target with a beam of 64Ni. The experimental B(E2) reduced transition probabilities for 63,65Co are well reproduced by large-scale shell-model calculations that predict a constant trend of the B(E2) values up to the N=40 67Co isotope

    TPD Swan, PM Walker, Z Podolyak, MW Reed, GD Dracoulis, GJ Lane, T Kibedi, ML Smith (2011)Discovery of a nonyrast K-pi=8(+) isomer in Dy-162, and the influence of competing K-mixing mechanisms on its highly forbidden decay, In: PHYSICAL REVIEW C83(3)ARTN 0pp. ?-? AMER PHYSICAL SOC
    A Musumarra, F Farinon, C Nociforo, H Geissel, G Baur, K-H Behr, A Bonasera, F Bosch, D Boutin, A Brünle, L Chen, A Del Zoppo, C Dimopoulou, A Di Pietro, T Faestermann, P Figuera, K Hagino, R Janik, C Karagiannis, P Kienle, S Kimura, R Knöbel, I Kojouharov, C Kozhuharov, T Kuboki, J Kurcewicz, N Kurz, K Langanke, M Lattuada, SA Litvinov, YA Litvinov, G Martinez-Pinedo, M Mazzocco, F Montes, Y Motizuki, F Nolden, T Ohtsubo, Y Okuma, Z Patyk, MG Pellegritf, W Pla, S Pietri, Z Podolyak, A Prochazka, C Scheidenberger, V Scuderf, B Sitar, M Steck, P Strmen, B Sun, T Suzuki, I Szarka, D Torresi, H Weick, JS Winfield, M Winkler, HJ Wollersheim, T Yamaguchi (2009)Electron screening effects on a-decay, In: AIP Conference Proceedings1165pp. 415-418

    An open problem in Nuclear Astrophysics concerns the understanding of electron‐screening effects on nuclear reaction rates at stellar energies. In this framework, we have proposed to investigate the influence of the electron cloud on α‐decay by measuring Q‐values and α‐decay half‐lives of fully stripped, H‐like and He‐like ions. These kinds of measurements have been feasible just recently for highly‐charged radioactive nuclides by fragmentation of 238U at relativistic energies at the FRS‐ESR facility at GSI. In this way it is possible to produce, efficiently separate and store highly‐charged α‐emitters. Candidates for the proposed investigation were carefully selected and will be studied by using the Schottky Mass Spectroscopy technique. In order to establish a solid reference data set, lifetimes and Qα‐value measurements of the corresponding neutrals have been performed directly at the FRS, by implanting the separated ions into an active Silicon stopper.

    G Lorusso, S Nishimura, ZY Xu, A Jungclaus, Y Shimizu, GS Simpson, P-A Soederstroem, H Watanabe, F Browne, P Doornenbal, G Gey, HS Jung, B Meyer, T Sumikama, J Taprogge, Z Vajta, J Wu, H Baba, G Benzoni, KY Chae, FCL Crespi, N Fukuda, R Gernhaeuser, N Inabe, T Isobe, T Kajino, D Kameda, GD Kim, Y-K Kim, I Kojouharov, FG Kondev, T Kubo, N Kurz, YK Kwon, GJ Lane, Z Li, A Montaner-Piza, K Moschner, F Naqvi, M Niikura, H Nishibata, A Odahara, R Orlandi, Z Patel, Z Podolyak, H Sakurai, H Schaffner, P Schury, S Shibagaki, K Steiger, H Suzuki, H Takeda, A Wendt, A Yagi, K Yoshinaga (2015)beta-Decay Half-Lives of 110 Neutron-Rich Nuclei across the N=82 Shell Gap: Implications for the Mechanism and Universality of the Astrophysical r Process, In: PHYSICAL REVIEW LETTERS114(19)ARTN 19250
    A Burger, TR Saito, H Grawe, H Hubel, P Reiter, J Gerl, M Gorska, HJ Wollersheim, A Al-Khatib, A Banu, T Beck, F Becker, P Bednarczyk, G Benzoni, A Bracco, S Brambilla, P Bringel, F Camera, E Clement, P Doornenbal, H Geissel, A Gorgen, J Grebosz, G Hammond, M Hellstrom, M Honma, A Kavatsyuk, O Kavatsyuk, M Kmiecik, I Kojouharov, W Korten, N Kurz, R Lozeva, A Maj, S Mandal, B Million, S Muralithar, A Neusser, F Nowacki, T Otsuka, Z Podolyak, N Saito, AK Singh, H Weick, C Wheldon, O Wieland, M Winkler (2005)Relativistic Coulomb excitation of neutron-rich Cr-54,Cr-56,Cr-58: On the pathway of magicity from N=40 to N=32, In: PHYSICS LETTERS B622(1-2)pp. 29-34 ELSEVIER SCIENCE BV
    AM Denis Bacelar, AM Bruce, S Lalkovski, Z Podolyák, N Al-Dahan, N Alkhomashi, IJ Cullen, AY Deo, GF Farrelly, W Gelletly, PH Regan, SJ Steer, TPD Swan, PM Walker, M Górska, S Pietri, MV Ricciardi, P Boutachkov, C Domingo-Pardo, F Farinon, H Geissel, J Gerl, N Goel, J Grȩbosz, R Hoischen, I Kojouharov, N Kurz, C Nociforo, A Prochazka, W Prokopowicz, K-H Schmidt, H Schaffner, H Weick, HJ Wollersheim, P Detistov, A Algora, F Molina, B Rubio, Z Dombradi, J Benlliure, AI Morales, S Verma, A Bracco, S Leoni, D Montanari, R Nicolini, E Calore, DR Napoli, JJ Valiente-Dobón, E Casarejos, M Doncel, D Rudolph, A Musumarra, K Steiger, P Strmen, I Szarka (2013)The population of metastable states as a probe of relativistic-energy fragmentation reactions, In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics723(4-5)pp. 302-306 Elsevier

    Isomeric ratios have been measured for high-spin states in Po84198,200,206,208, At85208,209,210,211, Rn86210,211,212,213,214, Fr87208,211,212,213,214, Ra88210,211,212,214,215, and Ac89215 following the projectile fragmentation of a 1 AGeV U beam by a Be target at GSI Helmholtzzentrum für Schwerionenforschung. The fragments were separated in the fragment separator (FRS) and identified by means of energy loss and time-of-flight techniques. They were brought to rest at the centre of the RISING gamma-ray detector array and intensities of gamma rays emitted in the decay of isomeric states with half-lives between 100 ns and 40 μs and spin values up to 55/2ℏ were used to obtain the corresponding isomeric ratios. The data are compared to theoretical isomeric ratios calculated in the framework of the abrasion-ablation model. Large experimental enhancements are obtained for high-spin isomers in comparison to expected values. © 2013 Elsevier B.V.

    JA Briz, MJG Borge, A Maira, A Perea, O Tengblad, J Agramunt, A Algora, E Estevez, E Nacher, B Rubio, LM Fraile, A Deo, G Farrelly, W Gelletly, Z Podolyak (2010)Conversion coefficients of the isomeric state in 72Br, In: AIP Conference Proceedings1231pp. 203-204

    In order to determine the Gamow‐Teller strength distribution for the N  =  Z nucleus 72Kr an experiment was performed with a Total Absorption Gamma Spectrometer. To fully accomplish this task it is crucial to determine the multipolarity of the low energy transitions as the spin‐parity of the daughter ground state has been debated. This is done by experimental determination of the conversion coefficients. Preliminary results for the multipolarity and conversion coefficients of the transition connecting the isomeric state at 101 keV with the 72Br ground state are presented.

    S Myalski, M Kmiecik, A Maj, PH Regan, AB Garnsworthy, S Pietri, D Rudolph, Z Podolyak, SJ Steer, F Becker, P Bednarczyk, J Gerl, M Gorska, H Grawe, I Kojouharov, H Schaffner, HJ Wollersheim, W Prokopowicz, J Grebosz, G Benzoni, B Blank, C Brandau, AM Bruce, L Caceres, F Camera, WN Catford, IJ Cullen, Z Dombradi, P Doornenbal, E Estevez, H Geissel, W Gelletly, A Heinz, R Hoischen, G Ilie, GA Jones, A Jungclaus, A Kelic, FG Kondev, T Kurtukian-Nieto, N Kurz, S Lalkovski, Z Liu, F Montes, M Pfutzner, T Saito, T Shizuma, AJ Simons, S Schwertel, S Tachenov, PM Walker, E Werner-Malento, O Wieland (2007)Isomeric ratio for the I-pi=8(+) yrast state in Pd-96 produced in the relativistic fragmentation of Ag-107, In: ACTA PHYSICA POLONICA B38(4)pp. 1277-1282 ACTA PHYSICA POLONICA B, JAGELLONIAN UNIV, INST PHYSICS

    We report on the preliminary results from a study of the decay of the I-pi = 8(+) T-1/2 = 2 mu s isomer in Pd-96 performed as part of the Stopped-Beam RISING campaign within the Rare Isotope Investigation at GSI (RISING). The Pd-96 ions were produced following the projectile fragmentation of a 750 MeV per nucleon Ag-107 primary beam. The reaction products were separated and identified by the in-flight method using the GSI Fragment Separator. The residues of interest were stopped in a perspex stopper surrounded by an array of 15, seven-element germanium Cluster detectors. One of the goals of the current work is to investigate the population of high-spin states produced projectile fragmentation reactions using isomeric ratio measurements to infer information on the angular momentum population distribution. In this short contribution the method and results of determining the isomeric ratio for the I-pi = 8(+) microsecond isomer in Pd-96 nucleus are presented.

    AA Zakari-Issoufou, A Porta, M Fallot, A Algora, JL Tain, E Valencia, S Rice, J Agramunt, J Äystö, M Bowry, VM Bui, R Caballero-Folch, D Cano-Ott, V Eloma, E Estévez, GF Farrelly, A Garcia, W Gelletly, MB Gomez-Hornillos, V Gorlychev, J Hakala, A Jokinen, MD Jordan, A Kankainen, FG Kondev, T Martinez, E Mendoza, F Molina, I Moore, A Perez, Z Podolyak, H Penttilä, PH Regan, J Rissanen, B Rubio, C Weber (2014)Results of fission products β decay properties measurement performed with a total absorption spectrometer, In: EPJ Web of Conferences66

    β-decay properties of fission products are very important for applied reactor physics, for instance to estimate the decay heat released immediately after the reactor shutdown and to estimate the ν flux emitted. An accurate estimation of the decay heat and the ν emitted flux from reactors, are necessary for purposes such as reactors operation safety and non-proliferation. In order to improve the precision in the prediction for these quantities, the bias due to the Pandemonium effect affecting some important fission product data has to be corrected. New measurements of fission products β-decay, not sensitive to this effect, have been performed with a Total Absorption Spectrometer (TAS) at the JYFL facility of Jyväskylä. An overview of the TAS technique and first results from the 2009 campaign will be presented. © Owned by the authors, published by EDP Sciences, 2014.

    G Neyens, L Atanasova, DL Balabanski, F Becker, P Bednarczyk, L Caceres, P Doornenbal, J Gerl, M Gorska, J Grebosz, M Hass, G Ilie, N Kurz, I Kojouharov, R Lozeva, A Maj, M Pfutzner, S Pietri, Z Podolyak, W Prokopowicz, TR Saitoh, H Schaffner, G Simpson, N Vermeulen, E Werner-Malento, J Walker, HJ Wollersheim, D Bazzacco, G Benzoni, A Blazhev, N Blasi, A Bracco, C Brandau, F Camera, SK Chamoli, S Chmel, FCL Crespi, JM Daugas, M De Rydt, P Detistov, C Fahlander, E Farnea, G Georgiev, K Gladnishki, R Hoischen, M Ionescu-Bujor, A Iordachescu, J Jolie, A Jungclaus, M Kmiecik, A Krasznahorkay, R Kulessa, S Lakshmi, G Lo Bianco, S Mallion, K Mazurek, W Meczynski, D Montanari, S Myalsky, O Perru, D Rudolph, G Rusev, A Saltarelli, R Schwengner, J Styczen, K Turzo, JJ Valiente-Dobon, O Wieland, M Zieblinski (2007)g factor measurements on relativistic isomeric beams produced by fragmentation and U-fission: The g-rising project at GSI, In: ACTA PHYSICA POLONICA B38(4)pp. 1237-1247
    F Flavigny, P Doornenbal, A Obertelli, J-P Delaroche, M Girod, J Libert, TR Rodriguez, G Authelet, H Baba, D Calvet, F Chateau, S Chen, A Corsi, A Delbart, J-M Gheller, A Giganon, A Gillibert, V Lapoux, T Motobayashi, M Niikura, N Paul, J-Y Rousse, H Sakura, C Santamaria, D Steppenbeck, R Taniuchi, T Uesaka, T Ando, T Arici, A Blazhev, F Browne, A Bruce, R Carroll, LX Chung, ML Cortes, M Dewald, B Ding, S Franchoo, M Gorska, A Gottardo, A Jungclaus, J Lee, M Lettmann, BD Linh, J Liu, Z Liu, C Lizarazo, S Momiyama, K Moschner, S Nagamine, N Nakatsuka, C Nita, CR Nobs, L Olivier, R Orlandi, Z Patel, Zsolt Podolyak, M Rudigier, T Saito, C Shand, PA Soderstrom, I Stefan, V Vaquero, V Werner, K Wimmer, Z Xu (2017)Shape Evolution in Neutron-rich Krypton Isotopes beyond N = 60 : First spectroscopy of 98;100Kr, In: Physical Review Letters118(24)242501 American Physical Society

    We report on the first γ-ray spectroscopy of low-lying states in neutron-rich 98,100Kr isotopes obtained from 99,101Rb(p,2p) reactions at ∼ 220 MeV/nucleon. A reduction of the 2+ 1 state energies beyond N = 60 demonstrates a significant increase of deformation, shifted in neutron number compared to the sharper transition observed in strontium and zirconium isotopes. State-of-theart beyond-mean-field calculations using the Gogny D1S interaction predict level energies in good agreement with experimental results. The identification of a low-lying (0+ 2 , 2+ 2 ) state in 98Kr provides the first experimental evidence of a competing configuration at low energy in neutron-rich krypton isotopes consistent with the oblate-prolate shape coexistence picture suggested by theory

    AI Morales, J Benlliure, J Agramunt, A Algora, N Alkhomashi, H Alvarez-Pol, P Boutachkov, AM Bruce, LS Caceres, E Casarejos, AMD Bacelar, P Doornenbal, D Dragosavac, G Farrelly, A Gadea, W Gelletly, J Gerl, M Gorska, J Grebosz, I Kojouharov, F Molina, D Perez-Loureiro, S Pietri, Z Podolyak, PH Regan, B Rubio, H Shaffner, SJ Steer, S Tashenov, S Verma, HJ Wollersheim (2011)Synthesis of N=127 isotones through (p,n) charge-exchange reactions induced by relativistic Pb-208 projectiles, In: PHYSICAL REVIEW C84(1)ARTN 0pp. ?-? AMER PHYSICAL SOC
    MB Gómez-Hornillos, J Rissanen, JL Taín, A Algora, D Cano-Ott, J Agramunt, V Gorlychev, R Caballero, T Martínez, L Achouri, J Äysto, G Cortés, VV Elomaa, T Eronen, A García, J Hakala, A Jokinen, P Karvonen, VS Kolhinen, I Moore, M Parlog, H Penttilä, Z Podolyak, C Pretel, M Reponen, V Sonnenschein, E Valencia (2011)First measurements with the BEta deLayEd neutron detector (BELEN-20) at JYFLTRAP, In: Journal of Physics: Conference Series312(SECTIO)
    G Guastalla, DD DiJulio, M Gorska, J Cederkall, P Boutachkov, P Golubev, S Pietri, H Grawe, F Nowacki, K Sieja, A Algora, F Ameil, T Arici, A Atac, MA Bentley, A Blazhev, D Bloor, S Brambilla, N Braun, F Camera, Z Dombradi, C Domingo Pardo, A Estrade, F Farinon, J Gerl, N Goel, J Grebosz, T Habermann, R Hoischen, K Jansson, J Jolie, A Jungclaus, I Kojouharov, R Knoebel, R Kumar, J Kurcewicz, N Kurz, N Lalovic, E Merchan, K Moschner, F Naqvi, BSN Singh, J Nyberg, C Nociforo, A Obertelli, M Pfuetzner, N Pietralla, Z Podolyak, A Prochazka, D Ralet, P Reiter, D Rudolph, H Schaffner, F Schirru, L Scruton, D Sohler, T Swaleh, J Taprogge, Z Vajta, R Wadsworth, N Warr, H Weick, A Wendt, O Wieland, JS Winfield, HJ Wollersheim (2013)Coulomb Excitation of Sn-104 and the Strength of the Sn-100 Shell Closure, In: PHYSICAL REVIEW LETTERS110(17)ARTN 17250 AMER PHYSICAL SOC
    Z Podolyak, SJ Steer, G Farrelly, M Gorska, H Grawe, HK Maier, PH Regan, J Benlliure, S Pietri, J Gerl, HJ Wollersheim, M Milin, T Niksic, D Vretenar, S Szilner (2009)Structure of Neutron-rich N=126 Closed Shell Nuclei, In: NUCLEAR STRUCTURE AND DYNAMICS '091165pp. 86-89
    S Pietri, PH Rega, Z Podolyak, A Jungclaus, M Pfutzner, D Rudolph, AB Garnsworthy, SJ Steer, R Hoischen, M Gorska, J Gerl, HJ Wollersheim, I Kojouharov, H Schaffner, J Grebosz, F Becker, P Bednarczyk, L Caceres, P Doornenbal, H Geissel, A Kelic, N Kurz, F Montes, W Prokopowicz, T Saito, S Tashenov, E Werner-Malento, W Gelletly (2007)Experimental details of the Stopped Beam RISING campaign, In: EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS150pp. 319-320
    SJ Steer, Z Podolyák, S Pietri, M Górska, H Grawe, KH Maier, PH Regan, D Rudolph, AB Garnsworthy, R Hoischen (2011)Isomeric states observed in heavy neutron-rich nuclei populated in the fragmentation of a 208Pb beam, In: Physical Review C - Nuclear Physics84(4)044313 American Physical Society
    P Detistov, DL Balabanski, Z Podolyak (2007)Simulation of the electromagnetic background radiation for the rising experimental set-up, In: ACTA PHYSICA POLONICA B38(4)pp. 1287-1292
    R Wadsworth, BSN Singh, AN Steer, DC Jenkins, MA Bentley, T Brock, P Davies, R Glover, NS Pattabiraman, C Scholey, T Grahn, PT Greenlees, P Jones, U Jakobsson, R Julin, S Juutinen, S Ketelhut, M Leino, M Nyman, P Perua, J Pakarinen, P Rahkila, P Ruotslainen, J Sorri, J Uusitalo, CJ Lister, PA Butler, M Dimmock, DT Joss, J Thomson, S Rinta-Antila, B Cederwall, B Hadinia, M Sandzelius, A Atac, L Betterman, A Blazhev, N Braun, F Finke, K Geibel, G Ilie, H Iwasaki, J Jolie, P Reiter, C Scholl, N Warr, P Boutachkov, L Caceres, C Domingo, T Engert, F Farinon, J Gerl, N Goel, M Gorska, H Grawe, N Kurz, I Kojuharov, S Pietri, C Nociforo, A Prochazka, H-J Wollersheim, K Eppinger, T Faestermann, C Hinke, R Hoischen, R Kruecken, A Gottardo, Z Liu, P Woods, J Grebosz, E Merchant, J Nyberg, P-A Soderstrom, Z Podolyak, P Regan, S Steer, M Pfutzner, D Rudolph (2009)THE NORTHWEST FRONTIER: SPECTROSCOPY OF N similar to Z NUCLEI BELOW MASS 100, In: ACTA PHYSICA POLONICA B40(3)pp. 611-620
    GF Farrelly, Z Podolyak, SJ Steer, S Pietri, FR Xu, E Werner-Malento, T Shizuma, PH Regan, D Rudolph, AB Garnsworthy, R Hoischen, M Gorska, J Gerl, HJ Wollersheim, T Kurtukian-Nieto, G Benzoni, F Becker, P Bednarczyk, L Caceres, P Doornenbal, H Geisserl, J Grebosz, A Kelic, I Kojouharov, N Kurz, F Montes, W Prokopowicz, T Saito, H Schaffner, S Tashenov, A Heinz, M Pfuezner, A Jungclaus, DL Balabanski, C Brandau, AM Bruce, WN Catford, IJ Cullen, Z Dombradi, E Estevez, W Gelletly, G Ilie, J Jolie, GA Jones, M Kmiecik, FG Kondev, R Kruecken, S Lalkovski, HL Liu, Z Liu, A Maj, S Myalski, S Schwerrel, PM Walker, O Wieland (2009)REVISION OF THE K-ISOMER IN W-190(116), In: ACTA PHYSICA POLONICA B40(3)pp. 885-888
    M Sawicka, R Grzywacz, I Matea, H Grawe, M Pfutzner, J M Daugas, M Lewitowicz, D L Balabanski, F Becker, G Belier, C Bingham, C Borcea, E Bouchez, A Buta, M La Commara, E Dragulescu, G de France, G Georgiev, J Giovinazzo, M Gorska, F Hammache, M Hass, M Hellstrom, F Ibrahim, Z Janas, H Mach, P Mayet, V Meot, F Negoita, G Neyens, F D Santos, R D Page, O Perru, Z Podolyak, O Roig, K P Rykaczewski, M G Saint-Laurent, J E Sauvestre, O Sorlin, M Stanoiu, I Stefan, C Stodel, C Theisen, D Verney, J Zylicz (2003)Low Energy Levels in Ni-72, In: Physical Review C68(4)

    The yrast J(pi)=8(+) states in neutron-rich Ni-70,Ni-72,Ni-74,Ni-76 nuclei are predicted to be isomeric. The present paper describes two GANIL experiments. In the first of them a search was made for the 8(+) isomeric states in Ni-72,Ni-74 nuclei via fragmentation of Ge-76 using the ion gamma-decay correlation technique. Although these states were not observed, limits for their lifetimes were determined. In the second experiment the decay spectroscopy of Co-70,Co-72 nuclei was performed using fragmentation of a Kr-86(36+) beam and the new LISE2000 spectrometer. The beta delayed gamma rays from the decay of Co-70,Co-72 to Ni-70,Ni-72 were observed using the EXOGAM germanium detectors. The half life of Co-72 was measured to be 62(3) ms and the level sequence of the lowest excited states in Ni-72 was suggested, with the 2(+) state at 1096 keV. An attempt to reproduce the level scheme in terms of shell-model calculations was undertaken. The reasons for the disappearance of the 8(+) isomer in Ni-72 are discussed.

    Z Podolyak, PG Bizzeti, AM Bizzeti-Sona, A Gadea, S Lunardi, D Bazzacco, G de Angelis, M De Poli, DR Napoli, CM Petrache, CR Alvarez, CA Ur, P Kleinheinz, J Blomqvist (2001)Shell model and octupole excitations in Eu-147, In: PHYSICAL REVIEW C64(3)ARTN 03430 AMERICAN PHYSICAL SOC
    SM Lenzi, N Marginean, DR Napoli, CA Ur, AP Zuker, G de Angelis, A Algora, M Axiotis, D Bazzacco, N Belcari, MA Bentley, PG Bizzetti, A Bizzeti-Sona, F Brandolini, P von Brentano, D Bucurescu, JA Cameron, C Chandler, M De Poli, A Dewald, H Eberth, E Farnea, A Gadea, J Garces-Narro, W Gelletly, H Grawe, R Isocrate, DT Joss, CA Kalfas, T Klug, T Lampman, S Lunardi, T Martinez, G Martinez-Pinedo, R Menegazzo, J Nyberg, Z Podolyak, A Poves, RV Ribas, CR Alvarez, B Rubio, J Sanchez-Solano, P Spolaore, T Steinhardt, O Thelen, D Tonev, A Vitturi, W von Oertzen, M Weiszflog (2001)Coulomb energy differences in T=1 mirror rotational bands in Fe-50 and Cr-50, In: PHYSICAL REVIEW LETTERS87(12)ARTN 12250 AMERICAN PHYSICAL SOC
    I Shestakova, G Mukherjee, P Chowdhury, R D'Alarcao, CJ Pearson, Z Podolyak, PM Walker, C Wheldon, DM Cullen, I Ahmad, MP Carpenter, RVF Janssens, TL Khoo, FG Kondev, CJ Lister, D Seweryniak, I Wiedenhoever (2001)Yrast three-quasiparticle K isomers in neutron-rich Hf-181, In: PHYSICAL REVIEW C64(5)ARTN 05430 AMERICAN PHYSICAL SOC
    S Muto, NJ Stone, CR Bingham, JR Stone, PM Walker, Z Podolyak, G Audi, C Gaulard, L Risegari, U Köster, J Nikolov, M Veskovic, K Nishimura, T Ohtsubo, GS Simpson, WB Walters (2014)Magnetic properties of Hf 177 and Hf 180 in the strong-coupling deformed model, In: Physical Review C - Nuclear Physics89(4)

    This paper reports NMR measurements of the magnetic dipole moments of two high-K isomers, the 37/2-, 51.4 m, 2740 keV state in Hf177 and the 8-, 5.5 h, 1142 keV state in Hf180 by the method of on-line nuclear orientation. Also included are results on the angular distributions of γ transitions in the decay of the Hf177 isotope. These yield high precision E2/M1 multipole mixing ratios for transitions in bands built on the 23/2+, 1.1 s, isomer at 1315 keV and on the 9/2+, 0.663 ns, isomer at 321 keV. The new results are discussed in the light of the recently reported finding of systematic dependence of the behavior of the gR parameter upon the quasiproton and quasineutron make up of high-K isomeric states in this region. © 2014 American Physical Society.

    C Brandau, D Boutin, H Geissel, J Gerl, M Gorska, S Manikonda, G Muenzenberg, Z Podolyak, C Scheidenberger, H Weick, M Winkler, M Yavor (2007)Status of the energy-buncher in the low-energy branch of the Super-FRS, In: EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS150pp. 225-226
    Y Fujita, B Rubio, T Adachi, F Molina, A Algora, GPA Berg, P von Brentano, J Buscher, T Cocolios, D De Frenne, C Fransen, H Fujita, K Fujita, W Gelletly, K Hatanaka, M Huyse, O Ivanov, Y Kudryavtsev, E Jacobs, D Jordan, K Nakanishi, A Negret, D Pauwels, AB Perez-Cerdan, N Pietralla, Z Podolyak, L Popescu, R Raabe, Y Sakemi, M Sawicka, Y Shimbara, Y Shimizu, T Shizuma, Y Tameshige, A Tamii, P Van den Bergh, J Van de Walle, P Van Duppen, M Yosoi, KO Zell (2008)Gamow-Teller transitions in exotic pf-shell nuclei relevant to supernova explosion, In: JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS35(1)pp. ?-?
    E Valencia, A Algora, JL Tain, S Rice, J Agramunt, AA Zakari-Issoufou, J Äystö, M Bowry, VM Bui, R Caballero-Folch, D Cano-Ott, V Eloma, T Eronen, E Estevez, GF Farrelly, M Fallot, A Garcia, W Gelletly, MB Gomez-Hornillos, V Gorlychev, J Hakala, A Jokinen, MD Jordan, A Kankainen, FG Kondev, T Martinez, E Mendoza, F Molina, I Moore, A Perez, Z Podolyak, H Penttilä, A Porta, PH Regan, J Rissanen, B Rubio, C Weber (2014)Gamma/neutron competition above the neutron separation energy in delayed neutron emitters, In: EPJ Web of Conferences66

    To study the β-decay properties of some well known delayed neutron emitters an experiment was performed in 2009 at the IGISOL facility (University of Jyväskylä in Finland) using Total Absorption -ray Spectroscopy (TAGS) technique. The aim of these measurements is to obtain the full β-strength distribution below the neutron separation energy (Sn) and the γ/neutron competition above. This information is a key parameter in nuclear technology applications as well as in nuclear astrophysics and nuclear structure. Preliminary results of the analysis show a significant γ-branching ratio above Sn. © Owned by the authors, published by EDP Sciences, 2014.

    AB Garnsworthy, PH Regan, S Pietri, Y Sun, FR Xu, D Rudolph, M Gorska, L Caceres, Z Podolyak, SJ Steer, R Hoischen, A Heinz, F Becker, P Bednarczyk, P Doornenbal, H Geissel, J Gerl, H Grawe, J Grebosz, A Kelic, I Kojouharov, N Kurz, F Montes, W Prokopwicz, T Saito, H Schaffner, S Tachenov, E Werner-Malento, HJ Wollersheim, G Benzoni, B Blank, C Brandau, AM Bruce, F Camera, WN Catford, IJ Cullen, Z Dombradi, E Estevez, W Gelletly, G Ilie, J Jolie, GA Jones, A Jungclaus, M Kmiecik, FG Kondev, T Kurtukian-Nieto, S Lalkovski, Z Liu, A Maj, S Myalski, M Pfuetzner, S Schwertel, T Shizuma, AJ Simons, PM Walker, O Wieland (2009)Isomeric states in neutron-deficient A similar to 80-90 nuclei populated in the fragmentation of Ag-107, In: PHYSICAL REVIEW C80(6)ARTN 0pp. ?-? AMER PHYSICAL SOC
    R Hoischen, D Rudolph, HL Ma, P Montuenga, M Hellstrom, S Pietri, Z Podolyak, PH Regan, AB Garnsworthy, SJ Steer, F Becker, P Bednarczyk, L Caceres, P Doornenbal, J Gerl, M Gorska, J Grebosz, I Kojouharov, N Kurz, W Prokopowicz, H Schaffner, HJ Wollersheim, L-L Andersson, L Atanasova, DL Balabanski, MA Bentley, A Blazhev, C Brandau, JR Brown, C Fahlander, EK Johansson, A Jungclaus (2011)Isomeric mirror states as probes for effective charges in the lower pf shell, In: JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS38(3)ARTN 0pp. ?-? IOP PUBLISHING LTD
    P Doornenbal, P Reiter, H Grawe, T Saito, A Al-Khatib, A Banu, T Beck, F Becker, P Bednarczyk, G Benzoni, A Bracco, A Buerger, L Caceres, F Camera, S Chmel, FCL Crespi, H Geissel, J Gerl, M Gorska, J Grebosz, H Huebel, M Kavatsyuk, O Kavatsyuk, M Kmiecik, I Kojouharov, N Kurz, R Lozeva, A Maj, S Mandal, W Meczynski, B Million, Z Podolyak, A Richard, N Saito, H Schaffner, M Seidlitz, T Striepling, J Walker, N Warr, H Weick, O Wieland, M Winkler, HJ Wollersheim (2010)Lifetime effects for high-resolution gamma-ray spectroscopy at relativistic energies and their implications for the RISING spectrometer, In: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT613(2)pp. 218-225 ELSEVIER SCIENCE BV
    S Lalkovski, S Kisyov, M Zhekova, AM Bruce, AMD Bacelar, M Górska, S Pietri, P Bednarczyk, L Caceres, P Doornenbal, H Geissel, J Gerl, J Grȩbosz, I Kojouharov, N Kurz, W Prokopowicz, H Schaffner, S Tashenov, HJ Wollersheim, Z Podolyák, IJ Cullen, GF Farrelly, AB Garnsworthy, W Gelletly, PH Regan, S Steer, PM Walker, E Casarejos, S Myalski, C Hinke, G Ilie, G Jaworski, M Palacz (2012)Single-particle isomeric states in Pd and Ru, In: Journal of Physics: Conference Series366(1)

    Neutron-rich nuclei were populated in a relativistic fission of U. Gamma-rays with energies of 135 keV and 184 keV were associated with two isomeric states in Pd and Ru. Half-lives of 0.63(5) μs and 2.0(3) μs were deduced and the isomeric states were interpreted in terms of prolate deformed single-particle states.

    P Chowdhury, I Shestakova, R D'Alarcao, CJ Pearson, Z Podolyak, PM Walker, C Wheldon, DM Cullen, I Ahmad, MP Carpenter, RVF Janssens, TL Khoo, FG Kondev, CJ Lister, D Seweryniak, I Wiedenhoever (2001)Harvesting new isomers in neutron-rich hafnium nuclei, In: NUCLEAR PHYSICS A682pp. 65C-70C
    L Chen, YA Litvinov, WR Plass, K Beckert, P Beller, F Bosch, D Boutin, L Caceres, RB Cakirli, JJ Carroll, RF Casten, RS Chakrawarthy, DM Cullen, IJ Cullen, B Franzke, H Geissel, J Gerl, M Gorska, GA Jones, A Kishada, R Knoebel, C Kozhuharov, SA Litvinov, Z Liu, S Mandal, F Montes, G Muenzenberg, F Nolden, T Ohtsubo, Z Patyk, Z Podolyak, R Propri, S Rigby, N Saito, T Saito, C Scheidenberger, M Shindo, M Steck, P Ugorowski, PM Walker, S Williams, H Weick, M Winkler, H-J Wollersheim, T Yamaguchi (2009)Schottky Mass Measurement of the Hg-208 Isotope: Implication for the Proton-Neutron Interaction Strength around Doubly Magic Pb-208, In: PHYSICAL REVIEW LETTERS102(12)ARTN 1pp. ?-? AMER PHYSICAL SOC
    Z Patel, P-A Soederstroem, Z Podolyak, PH Regan, PM Walker, H Watanabe, E Ideguchi, GS Simpson, HL Liu, S Nishimura, Q Wu, FR Xu, F Browne, P Doornenbal, G Lorusso, S Rice, L Sinclair, T Sumikama, J Wu, ZY Xu, N Aoi, H Baba, FLB Garrote, G Benzoni, R Daido, Y Fang, N Fukuda, G Gey, S Go, A Gottardo, N Inabe, T Isobe, D Kameda, K Kobayashi, M Kobayashi, T Komatsubara, I Kojouharov, T Kubo, N Kurz, I Kuti, Z Li, M Matsushita, S Michimasa, C-B Moon, H Nishibata, I Nishizuka, A Odahara, E Sahin, H Sakurai, H Schaffner, H Suzuki, H Takeda, M Tanaka, J Taprogge, Z Vajta, A Yagi, R Yokoyama (2014)Isomer Decay Spectroscopy of Sm-164 and Gd-166: Midshell Collectivity Around N=100, In: PHYSICAL REVIEW LETTERS113(26)ARTN 2pp. ?-? AMER PHYSICAL SOC
    D Rudolph, A Gadea, G de Angelis, C Fahlander, A Algora, C Andreoiu, R Cardona, C Chandler, E Farnea, JG Narro, J Nyberg, M Palacz, Z Podolyak, T Steinhardt, O Thelen (2001)The lifetime of the proton-decaying 8915 keV state in Cu-58, In: NUCLEAR PHYSICS A694(1-2)pp. 132-146 ELSEVIER SCIENCE BV
    G Neyens, G Georgiev, R Grzywacz, M Hass, FD Santos, M Lewitowicz, DL Balabanski, C Bingham, C Borcea, N Coulier, R Coussement, JM Daugas, G Defrance, G Goldring, M Gorska, H Grawe, C O'Leary, I Macovei, H Mach, R Page, M Pfutzner, YE Penionzkevich, Z Podolyak, PH Regan, K Rykaczewski, M Sawicka, NA Smirnova, Y Sobolev, S Teughels, K Vyvey (2002)g-factors of isomers around N approximate to 40, Z approximate to 28 from time-dependent Larmor precession on spin-aligned projectile-like fragments, In: NUCLEAR PHYSICS A701pp. 403C-409C
    G Georgiev, G Neyens, M Hass, DL Balabanski, C Bingham, C Borcea, N Coulier, R Coussement, JM Daugas, G de France, M Gorska, H Grawe, R Grzywacz, M Lewitowicz, H Mach, I Matea, FD Santos, RD Page, M Pfutzner, YE Penionzhkevich, Z Podolyak, PH Regan, K Rykaczewski, M Sawicka, NA Smirnova, Y Sobolev, M Stanoiu, S Teughels, K Vyvey (2004)G-factors of isomeric states in the neutron-rich nuclei, In: EUROPEAN PHYSICAL JOURNAL A20(1)pp. 93-94
    S Rice, E Valencia, A Algora, JL Tain, PH Regan, Z Podolyak, J Agramunt, W Gelletly, AL Nichols, S Freeman, A Andreyev, A Bruce, A Deacon, D Jenkins, D Joss, D MacGregor, P Regan, J Simpson, G Tungate, B Wadsworth, D Watts (2012)Decay Heat Measurements Using Total Absorption Gamma-ray Spectroscopy, In: RUTHERFORD CENTENNIAL CONFERENCE ON NUCLEAR PHYSICS381ARTN 0pp. ?-? IOP PUBLISHING LTD
    M Nakhostin, Z Podolyak, PJ Sellin (2013)Application of pulse-shape discrimination to coplanar CdZnTe detectors, In: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT729pp. 541-545 ELSEVIER SCIENCE BV
    S Calinescu, M Stanoiu, F Negoita, C Borcea, R Borcea, C Petrone, F Rotaru, L Cáceres, JC Thomas, A Lepailleur, T Roger, O Sorlin, S Grévy, D Sohler, Z Dombradi, I Kuti, Z Vajta, M Bowry, W Catford, Z Podolyak, E Wilson, S Franchoo, M Niikura, I Stefan, S Lukyanov, Y Penionzhkevich, J Mrazek, R Gillibert (2013)Study of the neutron rich sulfure isotope S through intermediate energy Coulomb excitation, In: Journal of Physics: Conference Series413(1)

    The reduced transition probability B(E2: 3/2→7/2 ) has been measured in S using Coulomb excitation at intermediate energy. The nucleus of interest was produced by fragmentation of a Ca beam at GANIL. The reaction products were separated in the LISE spectrometer. After Coulomb-excitation of S in a Pb target, the γ rays emitted inflight were detected by 64 BaF detectors of the Chteau de Cristal array. The preliminary value deduced for the reduced transition probability B(E2: 3/2 →7/2 ) is in agreement with the predictions of the shell model calculations and supports a prolate-spherical shape coexistence in the S nucleus.

    N Paul, A Obertelli, C Bertulani, A Corsi, P Doornebal, J. L. Rodriguez-Sanchez, G Authelet, H Baba, D Calvet, F Chateau, S Chen, A Delbart, J. M Gheller, A Giganon, A Gilibert, T Isobe, V Lapoux, M Matsushita, S Momiyama, T Motobayashi, M Niikura, H Otsu, C Peron, A Peyaud, E. C Pollaco, J. Y Rousse, H Sakurai, C Santamaria, M Sasano, Y Shiga, D Steppenbeck, S Takeuchi, R Taniuchi, T Uesaka, H Wang, K Yoneda, T Ando, T Arici, A Blazhev, F Browne, A. M. Bruce, Richard Carroll, L. X. Chung, M. L Cortes, M Dewald, B Ding, Zs Dombradi, F Flavigny, S Franchoo, F Giacoppo, M Gorska, A Gottardo, Katarzyna Hadynska-Klek, Z Korkulu, S Koyama, Y Kubota, A Jungclaus, J Lee, M Lettmann, B.D Linh, J Liu, Z Liu, C Lizarazo, C Louchart, R Lozeva, K Matsui, T Miyazaki, K Moschner, S Nagamine, N Nakatsuka, C Nita, S Nishimura, C.R Nobs, L Olivier, S Ota, Z Patel, Zsolt Podolyak, Matthias Rudigier, E Sahin, T. Y Saito, Callum Shand, P. A Soderstrom, I. G. Stefan, T Sumikama, D Suzuki, R Orlandi, V Vaquero, Zs Vajta, V Werner, K Wimmer, J Wu, Z Xu (2019)Prominence of Pairing in Inclusive (p,2p) and (p,pn) Cross Sections from Neutron-Rich Nuclei, In: Physical Review Letters American Physical Society

    Fifty-five inclusive single nucleon removal cross sections from medium mass neutron-rich nuclei impinging on a hydrogen target at 250 MeV/nucleon were measured at the RIKEN Radioactive Isotope Beam Factory. Systematically higher cross sections are found for proton removal from nuclei with an even number of protons compared to odd-proton number projectiles for a given neutron separation energy. Neutron removal cross sections display no even-odd splitting contrary to nuclear cascade model predictions. Both effects are understood through simple considerations of neutron separation energies and bound state level densities originating in pairing correlations in the daughter nuclei. These conclusions are supported by comparison with semi-microscopic model predictions,highlighting the enhanced role of low-lying level densities in nucleon removal cross sections from loosely-bound nuclei.

    Z Podolyak, J Gerl, M Hellstrom, F Becker, KA Gladnishki, M Gorska, A Kelic, Y Kopatch, S Mandal, PH Regan, KH Schmidt, PM Walker, HJ Wollersheim, A Banu, G Benzoni, H Boardman, E Casarejos, J Ekman, H Geissel, H Grawe, D Hohn, I Kojouharov, J Leske, R Lozeva, MN Mineva, G Neyens, RD Page, CJ Pearson, M Portillo, D Rudolph, N Saito, H Schaffner, D Sohler, K Summerer, JJ Valiente-Dobon, C Wheldon, H Weick, M Winkler (2006)Neutron-deficient N approximate to 126 nuclei produced in U-238 fragmentation: Population of high-spin states, In: Frontiers in Nuclear Structure Astrophysics, and Reactions: FINUSTAR831pp. 114-118 AMER INST PHYSICS

    The population of metastable states produced in relativistic-energy fragmentation of a U-238 beam has been measured. For states with high angular momentum, I=17h and I=21.5h, a higher population than expected has been observed, with the discrepancy increasing with angular momentum. By considering two sources for the angular momentum, related to single-particle and collective motions, a much improved description of the experimental results can be obtained. In addition, new results on the structure of Fr-208, Ra-211 and Ac-216 are reported.

    Z Podolyak, SJ Steer, S Pietri, FR Xu, HL Liu, PH Regan, D Rudolph, AB Garnsworthy, R Hoischen, M Gorska, J Gerl, HJ Wollersheim, T Kurtukian-Nieto, G Benzoni, T Shizuma, F Becker, P Bednarczyk, L Caceres, P Doornenbal, H Geissel, J Grebosz, A Kelic, I Kojouharov, N Kurz, F Montes, W Prokopowicz, T Saito, H Schaffner, S Tashenov, A Heinz, M Pfutzner, A Jungclaus, DL Balabanski, C Brandau, AM Bruce, WN Catford, IJ Cullen, Z Dombradi, E Estevez, W Gelletly, G Ilie, J Jolie, GA Jones, M Kmiecik, FG Kondev, R Kruecken, S Lalkovski, Z Liu, A Maj, S Myalski, S Schwertel, PM Walker, E Werner-Malento, O Wieland (2009)Weakly deformed oblate structures in Os-198(76)122, In: PHYSICAL REVIEW C79(3)ARTN 0pp. ?-? AMER PHYSICAL SOC
    PH Regan, Z Podolyak, T Alharbi, PJR Mason, AM Bruce, C Townsley, OJ Roberts, N Marginean, R Marginean, D Ghita, K Mullholland, JF Smith, R Britton, Z Patel, M Nakhostin, S Rice, E Wilson, N Alazemi, N Alkhomashi, D Bucurescu, G Cata-Danil, D Deleanu, D Filipescu, T Glodariu, I Cata-Danil, C Mihai, A Negret, CR Nita, T Sava, L Stroe, G Suliman, P Detistov, U Garg, PC Bender, A Algora, S Liddick, N Cooper, V Werner, S Lalkovski, S Kisyov, F Browne, P-A Soederstroem, H Watanabe, T Sumikama (2013)Precision Lifetime Measurements Using LaBr3 Detectors With Stable and Radioactive Beams., In: HEAVY ION ACCELERATOR SYMPOSIUM 201363ARTN 01008 E D P SCIENCES
    H Watanabe, K Yamaguchi, A Odahara, T Sumikama, S Nishimura, K Yoshinaga, Z Li, Y Miyashita, K Sato, L Prochniak, H Baba, JS Berryman, N Blasi, A Bracco, F Camera, J Chiba, P Doornenbal, S Go, T Hashimoto, S Hayakawa, C Hinke, N Hinohara, E Ideguchi, T Isobe, Y Ito, DG Jenkins, Y Kawada, N Kobayashi, Y Kondo, R Kruecken, S Kubono, G Lorusso, T Nakano, T Nakatsukasa, M Kurata-Nishimura, HJ Ong, S Ota, Z Podolyak, H Sakurai, H Scheit, K Steiger, D Steppenbeck, K Sugimoto, K Tajiri, S Takano, A Takashima, T Teranishi, Y Wakabayashi, PM Walker, O Wieland, H Yamaguchi (2011)Development of axial asymmetry in the neutron-rich nucleus Mo-110, In: PHYSICS LETTERS B704(4)pp. 270-275 ELSEVIER SCIENCE BV
    S Rice, A Algora, JL Tain, E Valencia, J Agramunt, B Rubio, William Gelletly, Patrick Regan, A-A Zakari-Issoufou, M Fallot, A Porta, J Rissanen, T Eronen, J Aysto, L Batist, M Bowry, VM Bui, R Caballero-Folch, D Cano-Ott, V-V Elomaa, E Estevez, GF Farrelly, AR Garcia, B Gomez-Hornillos, V Gorlychev, J Hakala, MD Jordan, A Jokinen, VS Kolhinen, FG Kondev, T Martinez, E Mendoza, I Moore, H Penttila, Zsolt Podolyak, M Reponen, V Sonnenschein, AA Sonzogni, P Sarriguren (2017)Total Absorption Spectroscopy Study of the Beta Decay of 86Br and 91 1 Rb, In: Physical Review C96014320 American Physical Society

    The beta decays of 86Br and 91Rb have been studied using the total absorption spectroscopy technique. The radioactive nuclei were produced at the IGISOL facility in Jyvaskyla and further purified using the JYFLTRAP. 86Br and 91Rb are considered high priority contributors to the decay heat in reactors. In addition 91Rb was used as a normalization point in direct measurements of mean gamma energies released in the beta decay of fission products by Rudstam et al. assuming that this decay was well known from high-resolution measurements. Our results shows that both decays were suffering from the Pandemonium effect and that the results of Rudstam et al. should be renormalized.

    M Pfutzner, PH Regan, PM Walker, Z Podolyak, M Caamano, J Gerl, M Hellstrom, P Mayet, MN Mineva (2001)Population of high spin states in relativistic fragmentation, In: ACTA PHYSICA POLONICA B32(9)pp. 2507-2518
    AM Bruce, S Lalkovski, AMD Bacelar, M Gorska, S Pietri, Z Podolyak, Y Shi, PM Walker, FR Xu, P Bednarczyk, L Caceres, E Casarejos, IJ Cullen, P Doornenbal, GF Farrelly, AB Garnsworthy, H Geissel, W Gelletly, J Gerl, J Grebosz, C Hinke, G Ilie, G Jaworski, I Kojouharov, N Kurz, S Myalski, M Palacz, W Prokopowicz, PH Regan, H Schaffner, S Steer, S Tashenov, HJ Wollersheim (2010)Shape coexistence and isomeric states in neutron-rich Tc-112 and Tc-113, In: PHYSICAL REVIEW C82(4)ARTN 0pp. ?-? AMER PHYSICAL SOC
    D. Bucurescu, C. Rusu, N. Mărginean, C. A. Ur, G. de Angelis, L. Corradi, D. Bazzacco, S. Beghini, F. Della Vedova, G. Duchene, E. Farnea, T. Faul, E. Fioretto, A. Gadea, W. Gelletly, B. Guiot, M. Ionescu-Bujor, A. Iordăchescu, S. D. Landown, S. M. Lenzi, S. Lunardi, P. Mason, C. Mihai, R. Mărginean, R. Menegazzo, G. Montagnoli, D. Napoli, Zs. Podolyák, P. H. Regan, F. Scarlassara, A. M. Stefanini, G. Suliman, S. Szilner, M. Trotta, J. J. Valiente-Dobón, Y. H. Zhang (2007)gamma--ray spectroscopy of the neutron-rich nuclei 89Rb, 92Y, and 93Y with multinucleon transfer reactions, In: Physical Review C76(064301)

    The positive-parity yrast states in the 89Rb, 92Y, and 93Y nuclei were studied using gamma-ray spectroscopy with heavy-ion induced reactions. In the multinucleon transfer reactions 208Pb+90Zr (590 MeV) and 238U+82Se (505 MeV), several gamma-ray transitions were identified in these nuclei by means of coincidences between recoiling ions identified with the PRISMA spectrometer and gamma rays detected with the CLARA gamma-ray array in thin target experiments. Level schemes were subsequently determined from triple gamma coincidences recorded with the GASP array in a thick target experiment, in the reactions produced by a 470 MeV 82Se beam with a 192Os target. The observed level schemes are compared to shell-model calculations.

    T Daniel, S Kisyov, Patrick Regan, N Marginean, Zsolt Podolyak, R Marginean, K Nomura, Matthias Rudigier, R Mihai, V Werner, RJ Carroll, Laila Gurgi, A Oprea, Thomas Berry, A Serban, CR Nita, C Sotty, R Suvaila, A Turturica, C Costache, L Stan, A Olacel, M Boromiza, S Toma (2017)γ -ray spectroscopy of low-lying excited states and shape competition in Os 194, In: Physical Review C95(2)024328 American Physical Society

    The properties of excited states in the neutron-rich nucleus 194Os have been investigated using the 192Os(18O,16O)194Os reaction with an 80 MeV beam provided by the IFIN-HH Laboratory, Bucharest. Discrete γ -ray decays from excited states have been measured using the hybrid HPGe-LaBr3(Ce) array RoSPHERE. The current work identifies a number of previously unreported low-lying nonyrast states in 194Os as well as the first measurement of the half-life of the yrast 2+ state of 302(50) ps. This is equivalent to a B(E2 : 2+ → 0+) = 45(16) W.u. and intrinsic quadrupole deformation of βeff = 0.14(1). The experimental results are compared with Hartree-Fock-Bogoliubov–interacting-boson-model calculations and are consistent with a reduction in a quadrupole collectivity in Os isotopes with increasing neutron number.

    TPD Swan, PM Walker, Z Podolyak, MW Reed, GD Dracoulis, GJ Lane, T Kibedi, ML Smith (2012)Discovery of isomers in dysprosium, holmium, and erbium isotopes with N=94 to 97, In: PHYSICAL REVIEW C85024313 American Physical Society
    PJR Mason, Zsolt Podolyak, N Marginean, Patrick Regan, Paul Stevenson, V Werner, T Alexander, A Algora, T Alharbi, M Bowry, R Britton, AM Bruce, D Bucurescu, M Bunce, G Cata-Danil, I Cata-Danil, N Cooper, D Deleanu, D Delion, D Filipescu, William Gelletly, D Ghita, I Gheorghe, T Glodariu, G Ilie, D Ivanova, S Kisyov, S Lalkovski, R Lica, SN Liddick, R Marginean, C Mihai, K Mulholland, CR Nita, A Negret, S Pascu, S Rice, OJ Roberts, T Sava, JF Smith, P-A Soederstroem, L Stroe, G Suliman, R Suvaila, S Toma, C Townsley, E Wilson, Rachael Wood, M Zhekova, C Zhou (2013)Half-life of the yrast 2(+) state in W-188: Evolution of deformation and collectivity in neutron-rich tungsten isotopes, In: PHYSICAL REVIEW C88(4)044301pp. ?-? AMER PHYSICAL SOC

    The half-life of the yrast I π = 2+ state in the neutron-rich nucleus 188W has been measured using fast-timing techniques with the HPGe and LaBr3:Ce array at the National Institute of Physics and Nuclear Engineering, Bucharest. The resulting value of t1/2 = 0.87(12) ns is equivalent to a reduced transition probability of B(E2; 2+ 1 → 0+ 1 ) = 85(12) W.u. for this transition. The B(E2; 2+ 1 → 0+ 1 ) is compared to neighboring tungsten isotopes and nuclei in the Hf, Os, and Pt isotopic chains. Woods-Saxon potential energy surface (PES) calculations have been performed for nuclei in the tungsten isotopic chain and predict prolate deformed minima with rapidly increasing γ softness for 184–192W and an oblate minimum for 194W.

    JRB Oliveira, EW Cybulska, NH Medina, MN Rao, RV Ribas, WA Seale, FR Espinoza-Quinones, MA Rizzutto, D Bazzacco, F Brandolini, S Lunardi, CM Petrache, Z Podolyak, C Rossi-Alvarez, CA Ur, G de Angelis, DR Napoli, P Spolaore, A Gadea, D De Acuna, M De Poli, E Farnea, D Foltescu, M Ionescu-Bujor, A Iordachescu (2000)High-spin state spectroscopy of Dy-143, In: PHYSICAL REVIEW C62(6)ARTN 06430 AMERICAN PHYSICAL SOC
    EC Simpson, JA Tostevin, Z Podolyak, PH Regan, SJ Steer (2010)Differential isomeric ratios following two-proton knockout from Pb-208, In: PHYSICAL REVIEW C82(3)ARTN 0pp. ?-? AMER PHYSICAL SOC
    LS Caceres, M Gorska, A Jungclaus, PH Regan, AB Garnsworthy, S Pietri, Z Podolyak, D Rudolph, SJ Steer, H Grawe, DL Balabanski, F Becker, P Bednarczyk, G Benzoni, B Blank, C Brandau, AM Bruce, F Camera, WN Catford, IJ Cullen, Z Dombradi, P Doornenbalal, E Estevez, H Geissel, W Gelletly, J Gerl, J Grebosz, A Heinz, R Hoischen, G Ilie, J Jolie, GA Jones, M Kmiecik, I Kojouharov, FG Kondev, T Kurtukian-Nieto, N Kurz, S Lalkowski, L Liu, A Maj, S Myalsk, F Montes, M Pfuetzner, W Prokopowicz, T Saito, H Schatfner, S Schwertel, T Shizuma, AJ Simons, S Tashenov, PM Walker, E Werner-Malento, O Wielandh, HJ Wollersheim (2007)Identification of excited states in the N = Z nucleus Nb-82, In: ACTA PHYSICA POLONICA B38(4)pp. 1271-1275
    J Wu, S Nishimura, G Lorusso, P Moller, E Ideguchi, Patrick Regan, GS Simpson, P-A Soderstrom, Philip Walker, H Watanabe, ZY Xu, H Baba, F Browne, R Daido, P Doornenbal, YF Fang, G Gey, T Isobe, PS Lee, JJ Liu, Z Li, Z Korkulu, Z Patel, V Phong, S Rice, H Sakurai, L Sinclair, T Sumikama, M Tanaka, A Yagi, YL Ye, R Yokoyama, GX Zhang, T Alharbi, N Aoi, FL Bello Garrote, G Benzoni, AM Bruce, RJ Carroll, KY Chae, Z Dombradi, A Estrade, A Gottardo, CJ Griffin, H Kanaoka, I Kojouharov, FG Kondev, S Kubono, N Kurz, I Kuti, S Lalkovski, GJ Lane, EJ Lee, T Lokotko, Gavin Lotay, C-B Moon, H Nishibata, I Nishizuka, CR Nita, A Odahara, Zsolt Podolyak, OJ Roberts, H Schaffner, Callum Shand, J Taprogge, S Terashima, Z Vajta, S Yoshida (2017)94 -Decay Half-lives of Neutron-Rich 55Cs to 67Ho: Experimental Feedback and Evaluation of the r-Process Rare-Earth Peak Formation, In: Physical Review Letters118(7)072701 American Physical Society

    The -decay half-lives of 94 neutron-rich nuclei 144−151Cs, 146−154Ba, 148−156La, 150−158Ce, 153−160Pr, 156−162Nd, 159−163Pm, 160−166Sm, 161−168Eu, 165−170Gd, 166−172Tb, 169−173Dy, 172−175Ho and two isomeric states 174mEr, 172mDy were measured at Radioactive Isotope Beam Factory (RIBF), providing a new experimental basis to test theoretical models. Striking, large drops of -decay half-lives are observed at neutron-number N = 97 for 58Ce, 59Pr, 60Nd, 62Sm, and N = 105 for 63Eu, 64Gd, 65Tb, 66Dy. Features in the data mirror the interplay between pairing effects and microscopic structure. r-Process network calculations performed for a range of mass models and astrophysical conditions show that the 57 half-lives measured for the first time play an important role in shaping the abundance pattern of rare-earth elements in the solar system.

    M Pfutzner, PH Regan, PM Walker, M Caamano, J Gerl, M Hellstrom, P Mayet, KH Schmidt, Z Podolyak, MN Mineva, A Aprahamian, J Benlliure, AM Bruce, PA Butler, DC Gil, DM Cullen, J Doring, T Enquist, C Fox, J Garces Narro, H Geissel, W Gelletly, J Giovinazzo, M Gorska, H Grawe, R Grzywacz, A Kleinbohl, W Korten, M Lewitowicz, R Lucas, H Mach, CD O'Leary, F De Oliveira, CJ Pearson, F Rejmund, M Rejmund, M Sawicka, H Schaffner, C Schlegel, K Schmidt, C Theisen, F Vives, DD Warner, C Wheldon, HJ Wollersheim, S Wooding (2002)Angular momentum population in the fragmentation of Pb-208 at 1 GeV/nucleon, In: PHYSICAL REVIEW C65(6)ARTN 0pp. ?-? AMERICAN PHYSICAL SOC
    K Andgren, Z Podolyak, A Dewald, F R Xu, A Algora, M Axiotis, D Bazzacco, P G Bizzeti, A M Bizzeti-Sona, B Cederwall, G de Angelis, E Farnea, A Fitzler, A Gadea, W Gelletly, S Lunardi, O Moller, N Marginean, T Martinez, T Pissulla, C Rusu, C A Ur, R Venturelli, P M Walker, C Wheldon (2005)Lifetime Measurements of Normal Deformed States in Lu-165(71), In: Physical Review C71(1)

    Picosecond lifetimes of medium spin states in Lu-165 were measured for the first time. The reaction used to populate the nucleus of interest was La-139(Si-30,4n)Lu-165 at a beam energy of 135 MeV. The beam was provided by the XTU-tandem accelerator of Laboratori Nazionali di Legnaro, Italy. By using the differential decay curve method, lifetimes of 19 states in four different rotational bands were obtained. Therefrom the B(E2) values and the transitional quadrupole moments were deduced. The obtained Q(t) for the different bands are compared with total Routhian surface (TRS) calculations and particle-rotor-model calculations. The TRS calculations predict different axial symmetric shapes for the bands built on the 9/2(-)[514], 9/2(+)[404], and 1/2(-)[541] configurations, with a gamma softness for the 9/2(-)[514] configuration. This band has also been studied using the particle-rotor model, the results of which, however, are consistent with a triaxial shape with a gamma value of -15(p).

    Z Podolyak (2010)PRESENT AND FUTURE OF HISPEC, In: ACTA PHYSICA POLONICA B41(2)pp. 493-503
    B Bastin, S Grevy, D Sohler, O Sorlin, Z Dombradi, N L Achouri, J C Angelique, F Azaiez, D Baiborodin, R Borcea, C Bourgeois, A Buta, A Burger, R Chapman, J C Dalouzy, Z Dlouhy, A Drouard, Z Elekes, S Franchoo, S Iacob, B Laurent, M Lazar, X Liang, E Lienard, J Mrazek, L Nalpas, F Negoita, N A Orr, Y Penionzhkevich, Z Podolyak, F Pougheon, P Roussel-Chomaz, M G Saint-Laurent, M Staniou, I Stefan, F Nowacki, A Poves (2007)Collapse of the N=28 Shell Closure in Si-42, In: Physical Review Letters99(2)

    The energies of the excited states in very neutron-rich Si-42 and P-41,P-43 have been measured using in-beam gamma-ray spectroscopy from the fragmentation of secondary beams of S-42,S-44 at 39A MeV. The low 2(+) energy of Si-42, 770(19) keV, together with the level schemes of P-41,P-43, provides evidence for the disappearance of the Z=14 and N=28 spherical shell closures, which is ascribed mainly to the action of proton-neutron tensor forces. New shell model calculations indicate that Si-42 is best described as a well-deformed oblate rotor.

    Z Podolyak, S Steer, S Pietri, P Regan, D Rudolph, A Garnsworthy, R Hoischen, E Werner-Malento, J Gerl, M Gorska, H-J Wollersheim (2006)NUCL 40-Nuclear structure and reaction studies: Isomers used as a tool, In: ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY232 AMER CHEMICAL SOC
    M Ionescu-Bujor, A Iordachescu, F Brandolini, M De Poli, N Marginean, NH Medina, ZS Podolyak, P Pavan, RV Ribas, SM Lenzi, A Gadea, T Martinez (2000)g factors of the 7/2 and 14(+) isomers in W-175,W-176, In: PHYSICS LETTERS B495(3-4)pp. 289-294 ELSEVIER SCIENCE BV
    V Modamio, A Jungclaus, Z Podolyak, Y Shi, FR Xu, A Algora, D Bazzacco, D Escrig, LM Fraile, S Lenzi, N Marginean, T Martinez, DR Napoli, R Schwengner, CA Ur (2009)Identification of yrast high-K intrinsic states in Os-188, In: PHYSICAL REVIEW C79(2)ARTN 0pp. ?-? AMER PHYSICAL SOC
    L Caceres, D Sohler, S Grevy, C Force, O Sorlin, Z Dombradi, L Gaudefroy, NL Achouri, JC Angelique, F Azaiez, D Bayborodin, B Bastin, R Borcea, C Bourgeois, A Buta, A Buerger, R Chapman, JC Dalouzy, Z Dlouhy, A Drouard, Z Elekes, S Franchoo, S Iacob, B Laurent, M Lazar, X Liang, E Lienard, J Mrazek, L Nalpas, F Negoita, NA Orr, Y Penionzhkevich, Z Podolyak, F Pougheon, P Roussel-Chomaz, MG Saint-Laurent, M Stanoiu, I Stefan, F Nowacki, A Poves (2011)SHELLS AND SHAPES IN THE S-44 NUCLEUS, In: ACTA PHYSICA POLONICA B42(3-4)pp. 533-536
    AA Zakari-Issoufou, A Porta, M Fallot, A Algora, JL Tain, E Valencia, S Rice, J Agramunt, J Äystö, M Bowry, VM Bui, R Caballero-Folch, D Cano-Ott, V Eloma, E Estévez, GF Farrelly, A Garcia, W Gelletly, MB Gomez-Hornillos, V Gorlychev, J Hakala, A Jokinen, MD Jordan, A Kankainen, FG Kondev, T Martinez, E Mendoza, F Molina, I Moore, A Perez, Z Podolyak, H Penttilä, PH Regan, J Rissanen, B Rubio, C Weber (2013)Measurement of fission products β decay properties using a total absorption spectrometer, In: EPJ Web of Conferences62

    In a nuclear reactor, the decay of fission fragments is at the origin of decay heat and antineutrino flux. These quantities are not well known while they are very important for reactor safety and for our understanding of neutrino physics. One reason for the discrepancies observed in the estimation of the decay heat and antineutrinos flux coming from reactors could be linked with the Pandemonium effect. New measurements have been performed at the JYFL facility of Jyväskylä with a Total Absorption Spectrometer (TAS) in order to circumvent this effect. An overview of the TAS technique and first results from the 2009 measurement campaign will be presented. © Owned by the authors, published by EDP Sciences, 2013.

    F Browne, AM Bruce, T Sumikama, I Nishizuka, S Nishimura, P Doornenbal, G Lorusso, P-A Soederstroem, H Watanabe, R Daido, Z Patel, S Rice, L Sinclair, J Wu, ZY Xu, A Yagi, H Baba, N Chiga, R Carroll, F Didierjean, Y Fang, N Fukuda, G Gey, E Ideguchi, N Inabe, T Isobe, D Kameda, I Kojouharov, N Kurz, T Kubo, S Lalkovski, Z Li, R Lozeva, H Nishibata, A Odahara, Z Podolyak, PH Regan, OJ Roberts, H Sakurai, H Schaffner, GS Simpson, H Suzuki, H Takeda, M Tanaka, J Taprogge, V Werner, O Wieland (2015)Lifetime measurements of the first 2(+) states in Zr-104,Zr-106: Evolution of ground-state deformations, In: PHYSICS LETTERS B750pp. 448-452 ELSEVIER SCIENCE BV
    A Jungclaus, H Grawe, S Nishimura, P Doornenbal, G Lorusso, GS Simpson, P-A Söderström, T Sumikama, J Taprogge, ZY Xu, H Baba, F Browne, N Fukuda, R Gernhäuser, G Gey, N Inabe, T Isobe, HS Jung, D Kameda, GD Kim, Y-K Kim, I Kojouharov, T Kubo, N Kurz, YK Kwon, Z Liang, H Sakurai, H Schaffner, Y Shimizu, K Steiger, H Suzuki, H Takeda, Zs Vajta, H Watanabe, J Wu, A Yagi, K Yoshinaga, G Benzoni, S Bönig, KY Chae, L Coraggio, J-M Daugas, F Drouet, A Gadea, A Gargano, S Ilieva, N Itaco, FG Kondev, T Kröll, GJ Lane, A Montaner-Pizá, K Moschner, D Mücher, F Naqvi, M Niikura, H Nishibata, A Odahara, R Orlandi, Z Patel, Zsolt Podolyak, A Wendt (2017)Observation of a γ -decaying millisecond isomeric state in 128 Cd 80, In: Physics Letters B772pp. 483-488 Elsevier

    A new high-spin isomer in the neutron-rich nucleus 128Cd was populated in the projectile fission of a 238U beam at the Radioactive Isotope Beam Factory at RIKEN. A half-life of T1/2=6.3(8) ms was measured for the new state which was tentatively assigned a spin/parity of (15−). The experimental results are compared to shell model calculations performed using state-of-the-art realistic effective interactions and to the neighbouring nucleus 129Cd. In the present experiment no evidence was found for the decay of a 18+ E6 spin-trap isomer, based on the complete alignment of the two-neutron and two-proton holes in the 0h11/2 and the 0g9/2 orbit, respectively, which is predicted to exist by the shell model.

    J Jolie, J-M Regis, D Wilmsen, S Ahmed, M Pfeiffer, N Saed-Samii, N Warr, A Blanc, M Jentschel, U Koester, P Mutti, T Soldner, G Simpson, G De France, W Urban, F Drouet, A Vancraeyenest, P Baczyk, M Czerwinski, A Korgul, C Mazzocchi, T Rzaca-Urban, A Bruce, OJ Roberts, LM Fraile, H Mach, V Paziy, A Ignatov, S Ilieva, T Kroell, M Scheck, M Thuerauf, D Ivanova, S Kisyov, S Lalkovski, Z Podolyak, PH Regan, W Korten, M Zielinska, MD Salsac, D Habs, PG Thirolf, CA Ur, C Bernards, RF Casten, N Cooper, V Werner, RB Cakirli, S Leoni, G Benzoni, G Bocchi, S Bottoni, FCL Crespi, B Fornal, N Cieplicka, B Szpak, CM Petrache, R Leguillon, R John, C Lorenz, R Massarczyk, R Schwengner, D Curien, R Lozeva, L Sengele, N Marginean, R Lica (2015)The (n,gamma) campaigns at EXILL, In: CGS15 - CAPTURE GAMMA-RAY SPECTROSCOPY AND RELATED TOPICS93
    J-M Regis, J Jolie, H Mach, GS Simpson, A Blazhev, G Pascovici, M Pfeiffer, M Rudigier, N Saed-Samii, N Warr, A Blanc, G de France, M Jentschel, U Koester, P Mutti, T Soldner, CA Ur, W Urban, AM Bruce, F Drouet, LM Fraile, S Ilieva, W Korten, T Kroell, S Lalkovski, N Marginean, V Paziy, Z Podolyak, PH Regan, O Stezowski, A Vancraeyenest (2015)The Generalized Centroid Difference method for lifetime measurements via gamma-gamma coincidences using large fast-timing arrays, In: CGS15 - CAPTURE GAMMA-RAY SPECTROSCOPY AND RELATED TOPICS93
    S Mohammadi, Z Podolyak, G de Angelis, M Axiotis, D Bazzacco, PG Bizzeti, F Brandolini, R Broda, D Bucurescu, E Farnea, W Gelletly, A Gadea, M Ionescu-Bujor, A Iordachescu, T Kroll, S Longdown, S Lunardi, N Marginean, T Martinez, NH Medina, B Quintana, PH Regan, B Rubio, CA Ur, JJV Dobon, PM Walker, YH Zhang (2004)High-spin states populated in deep-inelastic reactions, In: BRAZILIAN JOURNAL OF PHYSICS34(3A)pp. 792-795
    CM Shand, E Wilson, Z Podolyak, H Grawe, BA Brown, B Fornal, RVF Janssens, M Bowry, M Bunce, MP Carpenter, RJ Carroll, CJ Chiara, N Cieplicka-Orynczak, AY Deo, GD Dracoulis, CR Hoffman, RS Kempley, FG Kondev, GJ Lane, T Lauritsen, G Lotay, MW Reed, PH Regan, C Rodriguez-Triguero, D Seweryniak, B Szpak, PM Walker, S Zhu (2015)STRUCTURE OF Pb-207 POPULATED IN Pb-208+Pb-208 DEEP-INELASTIC COLLISIONS, In: ACTA PHYSICA POLONICA B46(3)pp. 619-622 WYDAWNICTWO UNIWERSYTETU JAGIELLONSKIEGO

    The yrast structure of 207Pb above the 13=2+ isomeric state has been investigated in deep-inelastic collisions of 208Pb and 208Pb at ATLAS, Argonne National Laboratory. New and previously observed transitions were measured using the Gammasphere detector array. The level scheme of 207Pb is presented up to ∼ 6 MeV, built using coincidence and γ-ray intensity analyses. Spin and parity assignments of states were made, based on angular distributions and comparisons to shell model calculations.

    M Grieser, YA Litvinov, R Raabe, K Blaum, Y Blumenfeld, PA Butler, F Wenander, PJ Woods, M Aliotta, A Andreyev, A Artemyev, D Atanasov, T Aumann, D Balabanski, A Barzakh, L Batist, A-P Bernardes, D Bernhardt, J Billowes, S Bishop, M Borge, I Borzov, F Bosch, AJ Boston, C Brandau, W Catford, R Catherall, J Cederkäll, D Cullen, T Davinson, I Dillmann, C Dimopoulou, G Dracoulis, CE Düllmann, P Egelhof, A Estrade, D Fischer, K Flanagan, L Fraile, MA Fraser, SJ Freeman, H Geissel, J Gerl, P Greenlees, RE Grisenti, D Habs, R von Hahn, S Hagmann, M Hausmann, JJ He, M Heil, M Huyse, D Jenkins, A Jokinen, B Jonson, DT Joss, Y Kadi, N Kalantar-Nayestanaki, BP Kay, O Kiselev, H-J Kluge, M Kowalska, C Kozhuharov, S Kreim, T Kröll, J Kurcewicz, M Labiche, RC Lemmon, M Lestinsky, G Lotay, XW Ma, M Marta, J Meng, D Mücher, I Mukha, A Müller, AS Murphy, G Neyens, T Nilsson, C Nociforo, W Nörtershäuser, RD Page, M Pasini, N Petridis, N Pietralla, M Pfützner, Z Podolyák, P Regan, MW Reed, R Reifarth, P Reiter, R Repnow, K Riisager, B Rubio, MS Sanjari, DW Savin, C Scheidenberger, S Schippers, D Schneider, R Schuch, D Schwalm, L Schweikhard, D Shubina, E Siesling, H Simon, J Simpson, J Smith, K Sonnabend, M Steck, T Stora, T Stöhlker, B Sun, A Surzhykov, F Suzaki, O Tarasov, S Trotsenko, XL Tu, P Van Duppen, C Volpe, D Voulot, PM Walker, E Wildner, N Winckler, DFA Winters, A Wolf, HS Xu, A Yakushev, T Yamaguchi, YJ Yuan, YH Zhang, K Zuber (2012)Storage ring at HIE-ISOLDE: Technical design report: Technical design report, In: European Physical Journal: Special Topics207(1)pp. 1-117 EDP Sciences/Springer

    We propose to install a storage ring at an ISOL-type radioactive beam facility for the first time. Specifically, we intend to setup the heavy-ion, low-energy ring TSR at the HIE-ISOLDE facility in CERN, Geneva. Such a facility will provide a capability for experiments with stored secondary beams that is unique in the world. The envisaged physics programme is rich and varied, spanning from investigations of nuclear ground-state properties and reaction studies of astrophysical relevance, to investigations with highly-charged ions and pure isomeric beams. The TSR might also be employed for removal of isobaric contaminants from stored ion beams and for systematic studies within the neutrino beam programme. In addition to experiments performed using beams recirculating within the ring, cooled beams can also be extracted and exploited by external spectrometers for high-precision measurements. The existing TSR, which is presently in operation at the Max-Planck Institute for Nuclear Physics in Heidelberg, is well-suited and can be employed for this purpose. The physics cases as well as technical details of the existing ring facility and of the beam and infrastructure requirements at HIE-ISOLDE are discussed in the present technical design report.

    D Rudolph, C Fahlander, A Algora, C Andreoiu, R Cardona, C Chandler, G de Angelis, E Farnea, A Gadea, JG Narro, J Nyberg, M Palacz, Z Podolyak, T Steinhardt, O Thelen (2001)gamma-decay lifetime measurements in the second minimum of Cu-58, In: PHYSICAL REVIEW C63(2)ARTN 02130 AMERICAN PHYSICAL SOC
    Z Podolyak, M Caamano, PH Regan, PM Walker, P Mayet, J Gerl, C Schlegel, M Hellstrom, M Mineva, M Pfutzner (2002)Isomeric decays in neutron-rich W, Os and Pt nuclei, In: PROGRESS OF THEORETICAL PHYSICS SUPPLEMENT(146)pp. 467-472
    P. Koseoglou, V. Werner, N. Pietralla, S. Ilieva, T. Nikšić, D. Vretenar, P. Alexa, M. Thűrauf, C. Bernards, A. Blanc, A. M. Bruce, R. B. Cakirli, N. Cooper, L. M. Fraile, G. de France, M. Jentschel, J. Jolie, U. Kőster, W. Korten, T. Krőll, S. Lalkovski, H. Mach, N. Mărginean, P. Mutti, Z. Patel, V. Paziy, Zs. Podolyak, Patrick Regan, J.-M. Régis, O. J. Roberts, N. Saed-Samii, G. S. Simpson, T. Soldner, C. A. Ur, W. Urban, D. Wilmsen, E. Wilson (2020)Low-Z boundary of the N = 88-90 shape phase transition: 148Ce near the critical point, In: Physical Review C101(1)014303 American Physical Society

    Excited states of the neutron-rich nucleus 148Ce have been populated by neutron-induced fission of 235U and 241Pu samples. Their electromagnetic decays were studied by means of γ-ray coincidence spectroscopy with fast-timing capabilities. Lifetimes of the 2+1 and 4+1 states of 148Ce were obtained and their E2 decay rates deduced. The B4=2 = B(E2; 4+1 → 2+1)=B(E2; 2+1 → 0+1) ratio indicates that 148Ce is a transitional nucleus while the N = 88/90 shape phase transition evolves into a gradual change of nuclear deformation for proton numbers Z < 60.

    RS Kempley, Z Podolyak, D Bazzacco, A Gadea, E Farnea, JJ Valiente-Dobon, D Mengoni, F Recchia, E Sahin, A Gottardo, L Corradi, E Fioretto, S Szilner, V Anagnostatou, N Al-Dahan, G De Angelis, M Bellato, B Berti, D Bortolato, M Bowry, M Bunce, P Cocconi, A Colombo, Z Dombradi, C Fanin, W Gelletly, R Isocrate, S Ketenci, N Kondratyev, I Kuti, PJR Mason, C Michelagnoli, T Mijatovic, P Molini, G Montagnioli, D Montanari, M Nakhostin, DR Napoli, D Pellegrini, PH Regan, G Rampazzo, P Reiter, D Rosso, F Scarlassara, A Stefanini, P Singh, N Toniolo, CA Ur (2011)CROSS-COINCIDENCES IN THE Xe-136+Pb-208 DEEP-INELASTIC REACTION, In: ACTA PHYSICA POLONICA B42(3-4)pp. 717-720
    L Caceres, A Lepailleur, O Sorlin, M Stanoiu, D Sohler, Z Dombradi, SK Bogner, BA Brown, H Hergert, JD Holt, A Schwenk, F Azaiez, B Bastin, C Borcea, R Borcea, C Bourgeois, Z Elekes, Z Fueloep, S Grevy, L Gaudefroy, GF Grinyer, D Guillemaud-Mueller, F Ibrahim, A Kerek, A Krasznahorkay, M Lewitowicz, SM Lukyanov, J Mrazek, F Negoita, F de Oliveira, Y-E Penionzhkevich, Z Podolyak, MG Porquet, F Rotaru, P Roussel-Chomaz, MG Saint-Laurent, H Savajols, G Sletten, JC Thomas, J Timar, C Timis, Z Vajta (2015)Nuclear structure studies of F-24, In: PHYSICAL REVIEW C92(1)ARTN 01432 AMER PHYSICAL SOC
    G Benzoni, AI Morales, A Bracco, F Camera, FCL Crespi, AM Corsi, S Leoni, B Million, R Nicolini, O Wieland, JJ Valiente-Dobón, A Gottardo, G de Angelis, DR Napoli, E Sahin, A Gottardo, S Lunardi, A Bracco, F Camera, FCL Crespi, AM Corsi, S Leoni, R Nicolini, A Gadea, A Algora, S Lunardi, D Bazzacco, E Farnea, R Menegazzo, D Mengoni, F Recchia, CA Ur, P Boutachkov, M Górska, S Pietri, H Weick, ML Cortes, C Domingo-Pardo, T Engert, F Farinon, H Geissel, J Gerl, N Goel, E Gregor, T Habermann, R Hoischen, I Kojouharov, N Kurz, F Naqvi, C Nociforo, A Prochazka, W Prokopowicz, H Schaffner, A Sharma, H-J Wollersheim, AM Bruce, AM Denis Bacelar, J Grebosz, Z Podolyak, PH Regan, N Al-Dahan, M Bowry, M Bunce, AY Deo, GF Farrelly, MW Reed, TPD Swan, PM Walker, M Pfützner, J Alcántara Núñez, Y Ayyad, J Benlliure, N Alkhomashi, PRP Allegro, RV Ribas, E Casarejos, M Doncel, Z Dombradi, K Eppinger, S Klupp, K Steiger, R Hoischen, D Rudolph, R Janik, B Sitar, P Strmen, I Szarka, S Mandal, D Siwal, F Naqvi, AM Corsi, N Al-Dahan, PM Walker (2012)First measurement of beta decay half-lives in neutron-rich Tl and Bi isotopes, In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics715(4-5)pp. 293-297 Elsevier

    Neutron-rich isotopes around lead, beyond N= 126, have been studied exploiting the fragmentation of an uranium primary beam at the FRS-RISING setup at GSI. For the first time β-decay half-lives of Bi and Tl isotopes have been derived. The half-lives have been extracted using a numerical simulation developed for experiments in high-background conditions. Comparison with state of the art models used in r-process calculations is given, showing a systematic underestimation of the experimental values, at variance from close-lying nuclei. © 2012 Elsevier B.V.

    P-A Söderström, Philip Walker, J Wu, HL Liu, Patrick Regan, H Watanabe, P Doornenbal, Z Korkulu, P Lee, JJ Liu, G Lorusso, S Nishimura, VH Phong, T Sumikama, FR Xu, S Lalkovski, Gavin Lotay, Z Patel, Zsolt Podolyak, Callum Shand (2016)K-mixing in the doubly mid-shell nuclide 170Dy and the role of vibrational degeneracy, In: Physics Letters B762pp. 404-408 Elsevier

    A detailed study of the structure of the doubly mid-shell nucleus View the MathML source has been carried out, following isomeric and β decay. We have measured the yrast band up to the spin-parity Jπ=6+ state, the K=2γ -vibration band up to the 5+ state, a low-lying negative-parity band based on a 2− state that could be a candidate for the lowest energy octupole vibration state within this nucleus, and a candidate for the Kπ=6+ two quasi-particle isomer. This state was determined to have an excitation energy of 1643.91(23) keV and a half life of 0.99(4) μs, with a reduced hindrance for its decay to the ground-state band an order of magnitude lower than predicted by NpNn systematics. This is interpreted as being due to γ -vibrational mixing from a near degeneracy of the isomer and the 6+ state of the γ band. Furthermore, the parent nucleus 170Tb has been determined to have a half-life of View the MathML source s with a possible spin-parity of 2−.

    PH Regan, C Wheldon, AD Yamamoto, CY Wu, S Ashley, P Mumby-Croft, D Seaborne, AO Macchiavelli, D Cline, JF Smith, RS Chakrawarthy, M Cromaz, P Fallon, SJ Freeman, W Gelletly, A Gorgen, A Hayes, H Hua, SD Langdown, IY Lee, CJ Pearson, Z Podolyak, R Teng, JJ Valiente-Dobon (2004)Structural evolution in the (N,Z,I-pi) coordinate frame for A-100, In: NUCLEAR PHYSICS, LARGE AND SMALL726pp. 157-162
    EC Simpson, JA Tostevin, Z Podolyak, PH Regan, SJ Steer (2009)Population of low-seniority isomeric states of Hg-206 by two-proton knockout reactions at relativistic energies, In: PHYSICAL REVIEW C80(6)ARTN 0pp. ?-? AMER PHYSICAL SOC
    Z Podolyak (2008)From RISING to HISPEC/DESPEC, In: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS266(19-20)pp. 4589-4594
    L. Kaya, A. Vogt, P. Reiter, M. Siciliano, N. Shimizu, Y. Utsuno, H.-K. Wang, A. Gargano, L. Coraggio, N. Itaco, K. Arnswald, D. Bazzacco, B. Birkenbach, A. Blazhev, A. Bracco, B. Bruyneel, L. Corradi, F. C. L. Crespi, G. de Angelis, M. Droste, J. Eberth, A. Esmaylzadeh, E. Farnea, E. Fioretto, C. Fransen, A. Gadea, A. Giaz, A. Görgen, A. Gottardo, K. Hadyńska-Klęk, H. Hess, R. Hirsch, P. R. John, J. Jolie, A. Jungclaus, V. Karayonchev, L. Kornwebel, W. Korten, S. Leoni, L. Lewandowski, S. Lunardi, R. Menegazzo, D. Mengoni, C. Michelagnoli, T. Mijatović, G. Montagnoli, D. Montanari, C. Müller-Gatermann, D. Napoli, Zs. Podolyak, G. Pollarolo, F. Recchia, J.-M. Régis, N. Saed-Samii, E. Şahin, F. Scarlassara, K. Schomacker, M. Seidlitz, B. Siebeck, P.-A. Söderström, A. M. Stefanini, O. Stezowski, S. Szilner, B. Szpak, E. Teruya, C. Ur, J. J. Valiente-Dobón, K. Wolf, K. Yanase, N. Yoshinaga, K. O. Zell (2019)Isomer spectroscopy in ¹³³Ba and high-spin structure of ¹³⁴Ba, In: Physical Review C100(2)024323pp. 024323-1 American Physical Society

    The transitional nuclei ¹³⁴Ba and ¹³³Ba are investigated after multinucleon transfer employing the high-resolution Advanced GAmma Tracking Array coupled to the magnetic spectrometer PRISMA at the Laboratori Nazionali di Legnaro, Italy, and after fusion-evaporation reaction at the FN tandem accelerator of the University of Cologne, Germany. The Jπ=19/2⁺ state at 1942 keV in ¹³³Ba is identified as an isomer with a half-life of 66.6(20)ns corresponding to a B(E1) value of 7.7(4)×10⁻⁶e²fm² for the Jπ=19/2⁺ to Jπ=19/2⁻ transition. The level scheme of ¹³⁴Ba above the Jπ=10⁺ isomer is extended to approximately 6 MeV. A pronounced backbending is observed at ℏω=0.38 MeV along the positive-parity yrast band. The results are compared to the high-spin systematics of the Z=56 isotopes. Large-scale shell-model calculations employing the GCN50:82, SN100PN, SNV, PQM130, Realistic SM, and EPQQM interactions reproduce the experimental findings and elucidate the structure of the high-spin states. The shell-model calculations employing the GCN50:82 and PQM130 interactions reproduce alignment properties and provide detailed insight into the microscopic origin of this phenomenon in transitional ¹³⁴Ba.

    J. Ha, T. Sumikama, F. Browne, N. Hinohara, A. M. Bruce, S. Choi, I. Nishizuka, S. Nishimura, P. Doornenbal, G. Lorusso, P.-A. Söderström, H. Watanabe, R. Daido, Z. Patel, S. Rice, L. Sinclair, J. Wu, Z. Y. Xu, A. Yagi, H. Baba, N. Chiga, R. Carroll, F. Didierjean, Y. Fang, N. Fukuda, G. Gey, E. Ideguchi, N. Inabe, T. Isobe, D. Kameda, I. Kojouharov, N. Kurz, T. Kubo, S. Lalkovski, Z. Li, R. Lozeva, H. Nishibata, A. Odahara, Zs. Podolyak, P. H. Regan, O. J. Roberts, H. Sakurai, H. Schaffner, G. S. Simpson, H. Suzuki, H. Takeda, M. Tanaka, J. Taprogge, V. Werner, O. Wieland (2020)Shape evolution of neutron-rich 106,108,110Mo isotopes in the triaxial degree of freedom, In: Physical Review C101(4)044311 American Physical Society

    Background: Neutron-rich nuclei with mass number between 100 and 110 attract much attention, since several kinds of shapes, such as spherical, prolate, oblate, and triaxial shapes, are predicted. In particular, for neutron-rich Mo isotopes, different models predict different magnitudes and rigidity of triaxial deformation. Previous interpretations of experimental results based solely on low-lying 2+2 states are insufficient to distinguish between the rigid triaxial shape, γ vibration, or γ -soft rotor. Purpose: The shape evolution of 106Mo, 108Mo, and 110Mo is investigated through their 2+1-state lifetimes, decay-branching ratios of the 2+2 state, and energies of the low-lying collective excited states with Kπ = 0+, 2+, and 4+. Method: β -delayed γ -ray spectroscopy was employed for neutron-rich Nb and Zr isotopes produced at the RIKEN RI Beam Factory to populate excited states in 106Mo , 108Mo , and 110Mo . The EUroball-RIKEN Cluster Array was used for high-resolution γ -ray detection and lifetimes of the 2+1 states were determined using the UK fast-timing array of LaBr3(Ce) detectors. Results: New γ -ray transitions and levels are reported, including newly assigned 0+2 states in 108,110Mo . Quadrupole deformations were obtained for 106,108,110Mo from their 2+1 energies and lifetimes. The β -delayed neutron-emission probabilities of 108 Nb and 110 Nb were determined by examining the γ rays of their respective daughter decays. Conclusions: The even-odd energy staggering in the 2+2 band was compared with typical patterns of the γ -vibrational band, rigid triaxial rotor, and γ -soft rotor. The very small even-odd staggering of 106 Mo, 108Mo, and 110Mo favors a γ -vibrational band assignment. The kinematic moment of inertia for the 2+2 band showed a trend similar to the ground-state band, which is as expected for the γ -vibrational band. Beyond-mean-field calculations employing the constrained Hartree-Fock-Bogoliubov and local quasiparticle-random-phase approximation method using the SLy 5 + T interaction reproduced the ground and 2+2 bands in 106Mo and 108Mo . The collective wave functions are consistent with the interpretation of the 2+2 band as the γ -vibrational band of the prolate shape. However, the staggering pattern observed in 110Mo differs from the one suggested in the calculations which predict a γ -soft rotor. There was no experimental indication of the oblate shape or the γ -soft rotor predicted in these Mo isotopes.

    G.X. Zhang, H. Watanabe, G.D. Dracoulis, F.G. Kondev, G.J. Lane, P.H. Regan, P.-A. Söderström, P.M. Walker, K. Yoshida, H. Kanaoka, Z. Korkulu, P.S. Lee, J.J. Liu, S. Nishimura, J. Wu, A. Yagi, D.S. Ahn, T. Alharbi, H. Baba, F. Browne, A.M. Bruce, M.P. Carpenter, R.J. Carroll, K.Y. Chae, C.J. Chiara, Zs. Dombradi, P. Doornenbal, A. Estrade, N. Fukuda, C. Griffin, E. Ideguchi, N. Inabe, T. Isobe, S. Kanaya, I. Kojouharov, T. Kubo, S. Kubono, N. Kurz, I. Kuti, S. Lalkovski, T. Lauritsen, C.S. Lee, E.J. Lee, C.J. Lister, G. Lorusso, G. Lotay, E.A. McCutchan, C.-B. Moon, I. Nishizuka, C.R. Nita, A. Odahara, Z. Patel, V.H. Phong, Zs. Podolyak, O.J. Roberts, H. Sakurai, H. Schaffner, D. Seweryniak, C.M. Shand, Y. Shimizu, T. Sumikama, H. Suzuki, H. Takeda, S. Terashima, Zs. Vajta, J.J. Valiente-Dóbon, Z.Y. Xu, S. Zhu (2019)Interplay of quasiparticle and vibrational excitations: First observation of isomeric states in ¹⁶⁸Dy and ¹⁶⁹Dy, In: Physics Letters B799135036pp. 1-7 Elsevier

    The neutron-rich dysprosium isotopes ¹⁶⁸Dy₁₀₂ and ¹⁶⁹Dy₁₀₃ have been investigated using the EURICA γ-ray spectrometer, following production via in-flight fission of a high-intensity uranium beam in conjunction with isotope separation through the BigRIPS separator at RIBF in RIKEN Nishina Center. For ¹⁶⁸Dy, a previously unreported isomer with a half-life of 0.57(7) μs has been identified at an excitation energy of 1378 keV, and its presence affirmed independently using γ-γ-γ coincidence data taken with Gammasphere via two-proton transfer from an enriched ¹⁷⁰Er target performed at Argonne National Laboratory. This isomer is assigned Jπ = Kπ = (4⁻) based on the measured transition strengths, decay patterns, and the energy systematics for two-quasiparticle states in N = 102 isotones. The underlying mechanism of two-quasiparticle excitations in the doubly midshell region is discussed in comparison with the deformed QRPA and multi-quasiparticle calculations. In ¹⁶⁹Dy, the B(E2) value for the transition de-exciting the previously unreported Kπ = (1/2⁻) isomeric state at 166 keV to the Kπ = (5/2⁻) ground state is approximately two orders of magnitude larger than the E2 strength for the corresponding isomeric-decay transition in the N = 103 isotone ¹⁷³Yb, suggesting the presence of a significant γ-vibrational admixture with a dominant neutron one-quasiparticle component in the isomeric state.

    S Pietri, A Jungclaus, M Gorska, H Grawe, M Pfuetzner, L Caceres, P Detistov, S Lalkovski, V Modamio, Z Podolyak, PH Regan, D Rudolph, J Walker, E Werner-Malento, P Bednarczyk, P Doornenbal, H Geissel, J Gerl, J Grebosz, I Kojouharov, N Kurz, W Prokopowicz, H Schaffner, HJ Wollersheim, K Andgren, J Benlliure, G Benzoni, AM Bruce, E Casarejos, B Cederwall, FCL Crespi, B Hadinia, M Hellstrom, R Hoischen, G Ilie, A Khaplanov, M Kmiecik, R Kumar, A Maj, S Mandal, F Montes, S Myalski, G Simpson, SJ Steer, S Tashenov, O Wieland (2011)First observation of the decay of a 15(-) seniority v=4 isomer in Sn-128, In: PHYSICAL REVIEW C83(4)ARTN 0pp. ?-? AMER PHYSICAL SOC
    S Nishimura, Z Li, H Watanabe, K Yoshinaga, T Sumikama, T Tachibana, K Yamaguchi, M Kurata-Nishimura, G Lorusso, Y Miyashita, A Odahara, H Baba, JS Berryman, N Blasi, A Bracco, F Camera, J Chiba, P Doornenbal, S Go, T Hashimoto, S Hayakawa, C Hinke, E Ideguchi, T Isobe, Y Ito, DG Jenkins, Y Kawada, N Kobayashi, Y Kondo, R Krücken, S Kubono, T Nakano, HJ Ong, S Ota, Z Podolyák, H Sakurai, H Scheit, K Steiger, D Steppenbeck, K Sugimoto, S Takano, A Takashima, K Tajiri, T Teranishi, Y Wakabayashi, PM Walker, O Wieland, H Yamaguchi (2011)β-Decay half-lives of very neutron-rich Kr to Tc isotopes on the boundary of the r-process path: An indication of fast r-matter flow, In: Physical Review Letters106(5)052502 American Physical Society

    The β-decay half-lives of 38 neutron-rich isotopes from 36Kr to 43Tc have been measured; the half-lives of 100Kr, 103–105Sr, 106–108Y, 108–110Zr, 111,112Nb, 112–115Mo, and 116,117Tc are reported here. The results when compared with previous standard models indicate an overestimation in the predicted half-lives by a factor of 2 or more in the A≈110 region. A revised model based on the second generation gross theory of β decay better predicts the measured half-lives and suggests a more rapid flow of the rapid neutron-capture process (r-matter flow) through this region than previously predicted.

    M Gorska, L Caceres, H Grawe, M Pfuetzner, A Jungclaus, S Pietri, E Werner-Malento, Z Podolyak, PH Regan, D Rudolph, R Detistov, S Lalkovski, V Modamio, J Walker, T Beck, P Bednarczyk, P Doornenbal, H Geissel, J Gerl, J Grebosz, R Hoischen, I Kojouharov, N Kurz, W Prokopowicz, H Schaffner, H Weick, H-J Wollersheim, K Andgren, J Benlliure, G Benzoni, AM Bruce, E Casarejos, B Cederwall, FCL Crespi, B Hadinia, M Hellstrom, G Ilie, A Khaplanov, M Kmiecik, R Kumar, A Maj, S Mandal, F Montes, S Myalski, GS Simpson, SJ Steer, S Tashenov, O Wieland, Z Dombradi, R Reiter, D Sohler (2009)Evolution of the N=82 shell gap below Sn-132 inferred from core excited states in In-131, In: PHYSICS LETTERS B672(4-5)pp. 313-316 ELSEVIER SCIENCE BV
    Zsolt Podolyak (2014)Studies of exotic nuclei with advanced radiation detectors, In: Radiation Physics and Chemistry95pp. 14-18 PERGAMON-ELSEVIER SCIENCE LTD

    Contemporary key nuclear physics questions are introduced. The role of radiation detection in the study of exotic nuclei is illustrated with examples related to NuSTAR at the FAIR facility. The discussed detection systems include: Si-tracker for light charged particle detection, the AGATA gamma-ray tracking detector, diamond detectors for heavy ion measurements, the AIDA implantation and decay detector, and the LaBr3(Ce) fast-timing array. Due to technology transfer, applications related to radiation physics are expected to benefit from these developments.

    AI Morales, J Benlliure, M Gorska, H Grawe, S Verma, PH Regan, Z Podolyak, S Pietri, R Kumar, E Casarejos, A Algora, N Alkhomashi, H Alvarez-Pol, G Benzoni, A Blazhev, P Boutachkov, AM Bruce, LS Caceres, IJ Cullen, AMD Bacelar, P Doornenbal, ME Estevez-Aguado, G Farrelly, Y Fujita, AB Garnsworthy, W Gelletly, J Gerl, J Grebosz, R Hoischen, I Kojouharov, N Kurz, S Lalkovski, Z Liu, C Mihai, F Molina, D Muecher, W Prokopowicz, B Rubio, H Schaffner, SJ Steer, A Tamii, S Tashenov, JJ Valiente-Dobon, PM Walker, HJ Wollersheim, PJ Woods (2013)beta-delayed gamma-ray spectroscopy of Au-203,Au-204 and Pt200-202, In: PHYSICAL REVIEW C88(1)ARTN 0pp. ?-? AMER PHYSICAL SOC
    SM Lenzi, DR Napoli, CA Ur, D Bazzacco, F Brandolini, JA Cameron, E Caurier, G de Angelis, M De Poli, E Farnea, A Gadea, S Hankonen, S Lunardi, G Martinez-Pinedo, Z Podolyak, A Poves, CR Alvarez, J Sanchez-Solano, H Somacal (1999)Band termination in the N = Z odd-odd nucleus V-46, In: PHYSICAL REVIEW C60(2)ARTN 02130 AMERICAN PHYSICAL SOC
    PH Regan, AD Yamamoto, FR Xu, CY Wu, AO Macchiavelli, D Cline, JF Smith, SJ Freeman, JJ Valiente-Dobon, K Andgren, RS Chakrawarthy, M Cromaz, P Fallon, W Gelletly, A Gorgen, A Hayes, H Hua, SD Langdown, IY Lee, CJ Pearson, Z Podolyak, R Teng, C Wheldon (2003)Binary-reaction spectroscopy of Mo-99,Mo-100: Intruder alignment systematics in N=57 and N=58 isotones, In: PHYSICAL REVIEW C68(4)ARTN 0pp. ?-? AMERICAN PHYSICAL SOC
    P D Stevenson, M P Brine, Z Podolyak, P H Regan, P M Walker, J R Stone (2005)Shape Evolution in the Neutron-Rich Tungsten Region, In: Physical Review C72(4)

    Recent experimental data on the low-lying states in W-190 show a change in the E(4(1)(+))/E(2(1)(+)) behavior compared to less neutron-rich neigbors. Self-consistent axially-deformed Hartree-Fock calculations, using a separable monopole interaction, of nuclei in the vicinity of W-190 are performed to systematically examine the evolution of ground state quadrupole deformations. It is found that the neutron number N=116 causes a coexistence of oblate and prolate shapes, with a weak dependence on proton number, thereby hindering the development of these isotones as well-deformed rotors.

    CM Petrache, R Wyss, Z Podolyak, D Bazzacco, G de Angelis, D de Acuna, M De Poli, A Dewald, E Farnea, J Gableske, A Gadea, S Lunardi, DR Napoli, MN Rao, CR Alvarez, T Scanferla, CA Ur, R Venturelli, P von Brentano, LH Zhu (1998)Lifetime measurements of highly deformed bands in Nd-134,Nd-135 and Ce-131, In: PHYSICAL REVIEW C57(1)pp. R10-R14 AMERICAN PHYSICAL SOC
    F Molina, B Rubio, Y Fujita, W Gelletly, J Agramunt, A Algora, J Benlliure, P Boutachkov, L Caceres, RB Cakirli, E Casarejos, C Domingo-Pardo, P Doornenbal, A Gadea, E Ganioglu, M Gascon, H Geissel, J Gerl, M Gorska, J Grebosz, R Hoischen, R Kumar, N Kurz, I Kojouharov, LA Susam, H Matsubara, AI Morales, Y Oktem, D Pauwels, D Perez-Loureiro, S Pietri, Z Podolyak, W Prokopowicz, D Rudolph, H Schaffner, SJ Steer, JL Tain, A Tamii, S Tashenov, JJ Valiente-Dobon, S Verma, H-J Wollersheim (2015)T-z =-1 -> 0 beta decays of Ni-54, Fe-50, Cr-46, and Ti-42 and comparison with mirror (He-3,t) measurements, In: PHYSICAL REVIEW C91(1)ARTN 01430 AMER PHYSICAL SOC
    AI Morales, G Benzoni, N Al-Dahan, S Vergani, Z Podolyak, PH Regan, TPD Swan, JJ Valiente-Dobon, A Bracco, P Boutachkov, FCL Crespi, J Gerl, M Gorska, S Pietri, PM Walker, H-J Wollersheim (2015)First measurement of the beta-decay half-life of Au-206, In: EPL111(5)ARTN 52001 EPL ASSOCIATION, EUROPEAN PHYSICAL SOCIETY
    T Alharbi, PJ Mason, PH Regan, Z Podolyák, N Mărginean, M Nakhostin, M Bowry, D Bucurescu, G Căta-Danil, I Căta-Danil, D Deleanu, D Filipescu, T Glodariu, D Ghiţă, R Mărginean, C Mihai, A Negret, S Pascu, T Sava, L Stroe, G Suliman, NV Zamfir, AM Bruce, C Rodriguez Triguero, PC Bender, U Garg, MN Erduran, A Kusoglu, M Bostan, P Detistov, N Alkhomashi, AK Sinha, R Chakrabarti, SS Ghugre (2012)Gamma-ray fast-timing coincidence measurements from the (18)O+(18)O fusion-evaporation reaction using a mixed LaBr(3)-HPGe array, In: Appl Radiat Isot70(7)pp. 1337-1339 Elsevier

    We report on a gamma-ray coincidence analysis using a mixed array of hyperpure germanium and cerium-doped lanthanum tri-bromide (LaBr(3):Ce) scintillation detectors to study nuclear electromagnetic transition rates in the pico-to-nanosecond time regime in (33,34)P and (33)S following fusion-evaporation reactions between an (18)O beam and an isotopically enriched (18)O implanted tantalum target. Energies from decay gamma-rays associated with the reaction residues were measured in event-by-event coincidence mode, with the measured time difference information between the pairs of gamma-rays in each event also recorded using the ultra-fast coincidence timing technique. The experiment used the good full-energy peak resolution of the LaBr(3):Ce detectors coupled with their excellent timing responses in order to determine the excited state lifetime associated with the lowest lying, cross-shell, I(π)=4(-) "intruder" state previously reported in the N=19 isotone (34)P. The extracted lifetime is consistent with a mainly single-particle M2 multipolarity associated with a f(7/2)→d(5/2) single particle transition.

    E Valencia, JL Tain, A Algora, J Agramunt, E Estevez, MD Jordan, B Rubio, S Rice, Patrick Regan, William Gelletly, Zsolt Podolyak, M Bowry, P Mason, GF Farrelly, A Zakari-Issoufou, M Fallot, A Porta, VM Bui (2017)Total absorption γ -ray spectroscopy of the β-delayed neutron emitters 87Br, 88Br, and 94Rb, In: Physical Review C: Nuclear Physics024320 American Physical Society

    We investigate the decay of 87,88Br and 94Rb using total absorption γ -ray spectroscopy. These important fission products are β-delayed neutron emitters. Our data show considerable βγ intensity, so far unobserved in high-resolution γ -ray spectroscopy, from states at high excitation energy. We also find significant differences with the β intensity that can be deduced from existing measurements of the β spectrum. We evaluate the impact of the present data on reactor decay heat using summation calculations. Although the effect is relatively small it helps to reduce the discrepancy between calculations and integral measurements of the photon component for 235U fission at cooling times in the range 1–100 s. We also use summation calculations to evaluate the impact of present data on reactor antineutrino spectra. We find a significant effect at antineutrino energies in the range of 5 to 9 MeV. In addition, we observe an unexpected strong probability for γ emission from neutron unbound states populated in the daughter nucleus. The γ branching is compared to Hauser-Feshbach calculations, which allow one to explain the large value for bromine isotopes as due to nuclear structure. However the branching for 94Rb, although much smaller, hints of the need to increase the radiative width γ by one order of magnitude. This increase in γ would lead to a similar increase in the calculated (n,γ ) cross section for this very neutron-rich nucleus with a potential impact on r process abundance calculations.

    G Lorusso, R Shearman, PH Regan, SM Judge, S Bell, SM Collins, C Larijani, P Ivanov, SM Jerome, JD Keightley, S Lalkovski, AK Pearce, Z Podolyak (2016)Development of the NPL gamma-ray spectrometer NANA for traceable nuclear decay and structure studies, In: APPLIED RADIATION AND ISOTOPES109pp. 507-511 PERGAMON-ELSEVIER SCIENCE LTD
    J-M Regis, H Mach, GS Simpson, J Jolie, G Pascovici, N Saed-Samii, N Warr, A Bruce, J Degenkolb, LM Fraile, C Fransen, DG Ghita, S Kisyov, U Koester, A Korgul, S Lalkovski, N Marginean, P Mutti, B Olaizola, Z Podolyak, PH Regan, OJ Roberts, M Rudigier, L Stroe, W Urban, D Wilmsen (2013)The generalized centroid difference method for picosecond sensitive determination of lifetimes of nuclear excited states using large fast-timing arrays, In: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT726pp. 191-202 ELSEVIER SCIENCE BV
    T. L. Tang, B. P. Kay, C. R. Hoffman, J. P. Schiffer, D. K. Sharp, L. P. Gaffney, S. J. Freeman, M. R. Mumpower, A. Arokiaraj, E. F. Baader, P. A. Butler, W. N. Catford, G. de Angelis, F. Flavigny, M. D Gott, E. T. Gregor, J. Konki, M. Labiche, I. H. Lazurus, P. T. MacGregor, I. Martel, R. D. Page, Zs Podolyak, O. Poleshchuk, R. Raabe, F. Recchia, J. F. Smith, S. V. Szwec, J. Yang (2020)First Exploration of Neutron Shell Structure Below Lead and Beyond N = 126, In: Physical Review Letters American Physical Society

    The nuclei below lead but with more than 126 neutrons are crucial to an understanding of the astrophysical r-process in producing nuclei heavier than A ~ 190. Despite their importance, the structure and properties of these nuclei remain experimentally untested as they are difficult to produce in nuclear reactions with stable beams. In a first exploration of the shell structure of this region, neutron excitations in 207Hg have been probed using the neutron-adding (d,p) reaction in inverse kinematics. The radioactive beam of 206Hg was delivered to the new ISOLDE Solenoidal Spectrometer at an energy above the Coulomb barrier. The spectroscopy of 207Hg marks a first step in improving our understanding of the relevant structural properties of nuclei involved in a key part of the path of the r-process.

    M. Rudigier, Zs. Podolyak, P.H. Regan, A.M. Bruce, S. Lalkovski, R.L. Canavan, E.R. Gamba, O. Roberts, I. Burrows, D.M. Cullen, L.M. Fraile, L. Gerhard, J. Gerl, M. Gorska, A. Grant, J. Jolie, V. Karayonchev, N. Kurz, W. Korten, I.H. Lazarus, C.R. Nita, V.F.E. Pucknell, J.-M. Régis, H. Schaffner, J. Simpson, P. Singh, C.M. Townsley, J.F. Smith, J. Vesic (2020)FATIMA — FAst TIMing Array for DESPEC at FAIR, In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment969163967 Elsevier

    The components, working principle and characteristics of FATIMA (FAst TIMing Array), a fast-timing detector system for DESPEC at FAIR, are described. The core system includes 36 LaBr3(Ce) scintillator detectors, a mounting frame for the DESPEC station and a VME-based fast-timing data acquisition system. The current electronic timing circuit is based on V812 constant fraction discriminators and V1290 time-to-digital converters. Gamma-ray energies are measured using V1751 digitisers. Characteristics of the core FATIMA system including efficiency, energy, and coincidence resolving time, as well as limitations, are discussed on the basis of test measurements performed in the S4 cave at GSI, Germany. The coincidence γ-γ time resolution for the prompt 60Co cascade is determined to be ~320 ps full width at half maximum. The total full energy peak efficiency at 1 MeV for the 36 detector array in the DESPEC setup is 2.9%. The energy-dependent prompt response centroid curve with the current CFD/TDC combination is shown to be smooth; the centroid shift method can be applied for the measurement of half-lives below 200 ps. An overview of applications of the FATIMA detectors as an ancilliary system in combination with other detector arrays during recent years is given. Data on the operation of the detectors in the presence of magnetic fields are presented.

    C Schlegel, PH Regan, M Pfutzner, J Gerl, M Hellstrom, Z Podolyak, M Caamano, P Mayet, A Aprahamian, J Benlliure, AM Bruce, PA Butler, DC Gil, DM Cullen, J Doring, T Enquist, E Farget, C Fox, JG Narro, W Gelletly, J Giovinazzo, M Gorska, H Grawe, R Grzywacz, A Kleinbohl, W Korten, M Lewitowicz, R Lucas, H Mach, M Mineva, C O'Leary, F De Oliveira, CJ Pearson, M Rejmund, M Sawicka, H Schaffner, K Schmidt, C Theisen, PM Walker, DD Warner, C Wheldon, HJ Wollersheim, S Wooding, F Xu (2000)K-isomers in very neutron-rich nuclei around mass 180, In: PHYSICA SCRIPTAT88pp. 72-76
    D Bazzacco, M Bellato, T Kroll, B Quintana, P Spolaore, F Fanzago, DR Napoli, A Gadea, E Farnea, Z Podolyak, F Camera, B Million, O Wieland, A Geraci, A Pullia, G Ripamonti (2000)MARS: A project for an advanced gamma-ray array., In: ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY219pp. U80-U81 AMER CHEMICAL SOC
    A Gottardo, JJ Valiente-Dobón, G de Angelis, V Modamio, DR Napoli, E Sahin, S Lunardi, A Algora, PR John, SM Lenzi, G Benzoni, A Bracco, F Camera, FCL Crespi, A Corsi, S Leoni, B Million, AI Morales, R Nicolini, O Wieland, A Gadea, D Bazzacco, E Farnea, R Menegazzo, D Mengoni, F Recchia, CA Ur, P Boutachkov, M Górska, S Pietri, H Weick, ML Cortes, C Domingo-Pardo, T Engert, F Farinon, H Geissel, J Gerl, N Goel, E Gregor, T Habermann, R Hoischen, I Kojouharov, N Kurz, F Naqvi, C Nociforo, A Prochazka, W Prokopowicz, H Schaffner, A Sharma, H-J Wollersheim, AM Bruce, M Bunce, AM Denis Bacelar, J Grebosz, Z Podolyák, PH Regan, N Al-Dahan, M Bowry, AY Deo, GF Farrelly, MW Reed, TPD Swan, PM Walker, M Pfützner, Y Ayyad, J Benlliure, J Alcántara Núñez, N Alkhomashi, PRP Allegro, RV Ribas, E Casarejos, M Doncel, Z Dombradi, K Eppinger, S Klupp, K Steiger, D Rudolph, R Janik, B Sitar, P Strmen, I Szarka, S Mandal, D Siwal (2013)New μs isomers in the neutron-rich Hg nucleus, In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics725(4-5)pp. 292-296

    Neutron-rich nuclei in the lead region, beyond N=126, have been studied at the FRS-RISING setup at GSI, exploiting the fragmentation of a primary uranium beam. Two isomeric states have been identified in Hg: the 8 isomer expected from the seniority scheme in the νg shell and a second one at low spin and low excitation energy. The decay strength of the 8 isomer confirms the need of effective three-body forces in the case of neutron-rich lead isotopes. The other unexpected low-lying isomer has been tentatively assigned as a 3 state, although this is in contrast with theoretical expectations. © 2013 Elsevier B.V..

    N Belcari, G de Angelis, J Eberth, S Skoda, R Wyss, E Farnea, A Gadea, A Algora, M De Poli, E Fioretto, T Martinez, DR Napoli, G Prete, P Spolaore, D Bazzacco, F Brandolini, A Buscemi, R Isocrate, S Lenzi, S Lunardi, R Menegazzo, CM Petrache, P Pavan, CR Alvarez, Z Podolyak, PG Bizzeti, AM Bizzeti-Sona (1999)Absence of blocking effect in the N = Z odd-odd nucleus Ga-62: a new signature of the n-p pairing?, In: EXPERIMENTAL NUCLEAR PHYSICS IN EUROPE495pp. 193-194
    AA Zakari-Issoufou, A Algora, J Agramunt, J Aysto, M Bowry, VM Bui, R Caballero-Folch, D Cano-Ott, V Eloma, E Estevez, M Fallot, GF Farrelly, A Garcia, W Gelletly, MB Gomez-Hornillos, V Gorlychev, J Hakala, A Jokinen, MD Jordan, A Kankainen, FG Kondev, T Martinez, E Mendoza, F Molina, I Moore, A Perez, A Porta, Z Podolyak, H Penttila, PH Regan, S Rice, J Rissanen, B Rubio, JL Tain, E Valencia, C Weber (2013)The total absorption spectroscopy technique for reactor technology and basic nuclear physics, In: IEEE Nuclear Science Symposium Conference Record

    Understanding the β-decay properties of fission products is very important for nuclear reactor monitoring & safety. Indeed, the β-decay of fission products is a source of power during nuclear reactor operation and after, this activity is the main contributor to the decay-heat representing ∼7-8% of a reactor nominal power. β-decay is also at the origin of the antineutrinos coming from nuclear reactor. The study of antineutrinos is mandatory for nuclear safeguard policies based on antineutrino detection. But there are still some discrepancies in the calculation of the decay-heat and antineutrino spectra. One reason of the distortions observed seems to be linked to the Pandemonium effect. In order to improve the accuracy in the prediction of these quantities, new measurements of fission products β-decay properties, not sensitive to this effect, have been performed with a Total Absorption spectrometer (TAS). An overview of the TAS technique and first results from the latest experiment will be presented. © 2013 IEEE.