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Professor Zsolt Podolyak


Professor
+44 (0)1483 686811
05 BB 03

Biography

Biography

MSc from the Babes-Bolyai University, Cluj, Romania, 1992.

PhD from the Kossuth Lajos University (Institute of Nuclear Research ATOMKI), Debrecen, Hungary, 1995.

Assistant Professor at the Babes-Bolyai University, Cluj, Romania, 1996.

Postdoctoral fellow at the Legnaro National Laboratories, Italy, 1996-1998.

EPSRC/STFC Advanced Fellow at the University of Surrey 2001-2009.

MBA from Open University, UK, 2009.

Presently Professor at the University of Surrey.

Research interests

Nuclear physics:

  • Nuclear structure; structure of heavy neutron-rich nuclei
  • Nuclear reactions (fragmentation)
  • Radioactive beam facilities (FAIR/NuSTAR; RIKEN; CERN/ISOLDE)

Teaching

2nd year Laboratory

3rd year UG: Nuclear Astrophysics

MSc (REP, MP, RDI, MI): Radiation Physics

MSc (REP, RDI, MP): Radiation Physics Laboratory

Module Leader for PHY3041 Nuclear Astrophysics; PHYM021 Research Project and Dissertation; PHYM032 Radiation Physics; PHYM036 Radiation Laboratory Skills

Departmental duties

Programme Leader MSc Radiation and Environmental Protection

Programme Leader MSc Nuclear Science and Applications

News

Media Contacts

Contact the press team

Email:

mediarelations@surrey.ac.uk

Phone: +44 (0)1483 684380 / 688914 / 684378
Out-of-hours: +44 (0)7773 479911
Senate House, University of Surrey
Guildford, Surrey GU2 7XH

Research

Research interests

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

Rudigier M, Lalkovski S, Gamba E, Bruce A, Podolyak Z, Regan PH, Carpenter M, Zhu S, Ayangeakaa A (2017) Fast Timing Measurement Using an LaBr3(Ce) Scintillator Detector Array Coupled with Gammasphere, Acta Physica Polonica B 48 (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
Podolyak Z, Walker PM, Mach H, de France G, Sletten G, Azaiez F, Casandjian JM, Cederwall B, Cullen DM, Dombradi Z, Dracoulis GD, Fraile LM, Franchoo S, Fynbo H, Gorska M, Kopatch Y, Lane GJ, Mandal S, Milechina L, Molnar J, O'Leary C, Plociennik W, Pucknell V, Raddon P, Redon N, Ruchowska E, Stanoiu M, Tengblad O, Wheldon C, Wood R (2003) gamma-ray spectroscopy with a He-8 beam, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 511 (3) pp. 354-359 ELSEVIER SCIENCE BV
Wadsworth R, Singh BSN, Liu Z, Grawe H, Brock TS, Boutachkov P, Braun N, Blazhev A, Gorska M, Pietri S, Rudolph D, Domingo-Pardo C, Steer SJ, Atac A, Bettermann L, Caceres L, Eppinger K, Engert T, Faestermann T, Farinon F, Finke F, Geibel K, Gerl J, Gernhauser R, Goel N, Gottardo A, Grebosz J, Hinke C, Hoischen R, Ilie G, Iwasaki H, Jolie J, Kaskas A, Kojouharov I, Krucken R, Kurz N, Merchan E, Nociforo C, Nyberg J, Pfutzner M, Prochazka A, Podolyak Z, Regan PH, Reiter P, Rinta-Antila S, Scholl C, Schaffner H, Soderstrom PA, Warr N, Weick H, Wollersheim HJ, Woods PJ, Nowacki F, Sieja K (2012) Spin-gap isomer in 96Cd, Journal of Physics: Conference Series 381 (1)
Evidence has been obtained for the existence of the long predicted 16 + spin-gap isomer in 96Cd. The decay of the isomer was identified and studied following the use of an 850 MeV/u beam of 124Xe 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.
Farnea E, Recchia F, Bazzacco D, Kroell T, Podolyak Z, Quintana B, Gadea A (2010) Conceptual design and Monte Carlo simulations of the AGATA array, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 621 (1-3) pp. 331-343 ELSEVIER SCIENCE BV
Atanasova L, Balabanski DL, Chamoli SK, Hass M, Simpson GS, Bazzacco D, Becker F, Bednarczyk P, Benzoni G, Blasi N, Blazhev A, Bracco A, Brandau C, Caceres L, Camera F, Crespi FCL, Detistov P, Doornenbal P, Fahlander C, Farnea E, Georgiev G, Gerl J, Gladnishki KA, Gorska M, Grebosz J, Hoischen R, Ilie G, Ionescu-Bujor M, Iordachescu A, Jungclaus A, Lo Bianco G, Kmiecik M, Kojouharov I, Kurz N, Lakshmi S, Lozeva R, Maj A, Montanari D, Neyens G, Pfuetzner M, Pietri S, Podolyak Z, Prokopowicz W, Rudolph D, Rusev G, Saito TR, Saltarelli A, Schaffner H, Schwengner R, Tashenov S, Valiente-Dobon JJ, Vermeulen N, Walker J, Werner-Malento E, Wieland O, Wollersheim HJ, Grawe H, Hjorth-Jensen M (2010) g-factor measurements at RISING: The cases of Sn-127 and Sn-128, EPL 91 (4) ARTN 42001 EPL ASSOCIATION, EUROPEAN PHYSICAL SOCIETY
We report on g-factor measurements of the 19/2+ T1/2=4.5(3) ¼s isomer in 127Sn and the 10+ T1/2=2.69(23) ¼s 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 ³-rays of the isomeric decay were detected by the RISING ³-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 ½h11/2? 2 and ½(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.
Mohammadi S, Podolyák Z, De Angelis G, Axiotis M, Bazzacco D, Bizzeti PG, Brandolini F, Broda R, Bucurescu D, Farnea E, Gelletly W, Gadea A, Ionescu-Bujor M, Iordachescu A, Kröll T, Longdown S, Lunardi S, Marginean N, Martinez T, Medina NH, Quintana B, Regan PH, Rubio B, Ur CA, Valiente Dobón JJ, Walker PM, Zhang YH (2004) High-spin states populated in deep-inelastic reactions, Brazilian Journal of Physics 34 (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 H21. The observed new structures are tentatively interpreted as fragments of rotational bands built on multi-quasiparticle configurations.
Wheldon C, Walker PM, Chowdhury P, Shestakova I, D'Alarcao R, Ahmad I, Carpenter MP, Cullen DM, Janssens RVF, Khoo TL, Kondev FG, Lister CJ, Pearson CJ, Podolyak Z, Seweryniak D, Wiedenhoever I (2000) Inelastic excitation of new high-spin yrast isomers in Ta-180, PHYSICAL REVIEW C 62 (5) ARTN 057301 AMERICAN PHYSICAL SOC
Bizzeti PG, Bizzeti-Sona AM, Bini M, Lunardi S, Bazzacco D, de Angelis G, Farnea E, Menegazzo R, Napoli DR, Petrache CM, Podolyak Z, Alvarez CR (2002) Sum-up and pile-up contribution to cross-over peaks in coincidence gamma spectroscopy, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 481 (1-3) PII S0168-9002(01)01370-5 pp. 262-283 ELSEVIER SCIENCE BV
Doornenbal P, Reiter P, Grawe H, Saito T, Al-Khatib A, Banu A, Beck T, Becker F, Bednarczyk P, Benzoni G, Bracco A, Buerger A, Caceres L, Camera F, Chmel S, Crespi FCL, Geissel H, Gerl J, Gorska M, Grebosz J, Huebel H, Kavatsyuk M, Kavatsyuk O, Kmiecik M, Kojouharov I, Kurz N, Lozeva R, Maj A, Mandal S, Meczynski W, Million B, Podolyak Z, Richard A, Saito N, Schaffner H, Seidlitz M, Striepling T, Walker J, Warr N, Weick H, Wieland O, Winkler M, Wollersheim HJ (2010) Lifetime effects for high-resolution gamma-ray spectroscopy at relativistic energies and their implications for the RISING spectrometer, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 613 (2) pp. 218-225 ELSEVIER SCIENCE BV
Gottardo A, Valiente-Dobón JJ, Benzoni G, Gadea A, Lunardi S, Boutachkov P, Bruce AM, Górska M, Grebosz J, Pietri S, Podolyák Z, Pfützner M, Regan PH, Weick H, Alcántara Núñez J, Algora A, Al-Dahan N, de Angelis G, Ayyad Y, Alkhomashi N, Allegro PRP, Bazzacco D, Benlliure J, Bowry M, Bracco A, Bunce M, Camera F, Casarejos E, Cortes ML, Crespi FCL, Corsi A, Denis Bacelar AM, Deo AY, Domingo-Pardo C, Doncel M, Dombradi Z, Engert T, Eppinger K, Farrelly GF, Farinon F, Farnea E, Geissel H, Gerl J, Goel N, Gregor E, Habermann T, Hoischen R, Janik R, John PR, Klupp S, Kojouharov I, Kurz N, Lenzi SM, Leoni S, Mandal S, Menegazzo R, Mengoni D, Million B, Modamio V, Morales AI, Napoli DR, Naqvi F, Nicolini R, Nociforo C, Prochazka A, Prokopowicz W, Recchia F, Ribas RV, Reed MW, Rudolph D, Sahin E, Schaffner H, Sharma A, Sitar B, Siwal D, Steiger K, Strmen P, Swan TPD, Szarka I, Ur CA, Walker PM, Wieland O, Wollersheim HJ (2013) New ¼s isomers in the neutron-rich 210Hg nucleus, Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 725 (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 210Hg: the 8+ isomer expected from the seniority scheme in the ½g9/2 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..
Paul N, Corsi A, Obertelli A, Doornenbal P, Authelet G, Baba H, Bally B, Bender M, Calvet D, Chateau F, Chen S, Delaroche J, Delbart A, Gheller J, Giganon A, Gillibert A, Girod M, Heenen P, Lapoux V, Libert J, Motobayashi T, Niikura M, Otsuka T, Rodr1guez T, Rousse J, Sakurai H, Santamaria C, Shimizu N, Steppenbeck D, Taniuchi R, Togashi T, Tsunoda Y, Uesaka T, Ando T, Arici T, Blazhev A, Browne F, Bruce A, Carroll R, Chung L, Cortes M, Dewald M, Ding B, Flavigny F, Franchoo S, Gorska M, Gottardo A, Jungclaus A, Lee J, Lettmann M, Linh B, Liu J, Liu Z, Lizarazo C, Momiyama S, Moschner K, Nagamine S, Nakatsuka N, Nita C, Nobs C, Olivier L, Patel Z, Podolyak Z, Rudigier M, Saito T, Shand CM, Soderstrom P, Stefan I, Orlandi R, Vaquero V, Werner V, Wimmer K, Xu Z (2017) Are there signatures of harmonic oscillator shells far from stability? - First spectroscopy of 110Zr, Physical Review Letters 118 (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
³
-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
.

Sohler D, Podolyak Z, Gulyas J, Fenyes T, Algora A, Dombradi Z, Brant S, Paar V (1997) Structure of the As-73 nucleus, NUCLEAR PHYSICS A 618 (1-2) pp. 35-54 ELSEVIER SCIENCE BV
Gladnishki KA, Podolyak Z, Regan PH, Gerl J, Hellstrom M, Kopatch Y, Mandal S, Gorska M, Page RD, Wollersheim HJ, Banu A, Benzoni G, Boardman H, La Commara M, Ekman J, Fahlander C, Geissel H, Grawe H, Kaza E, Korgul A, Matos M, Mineva MN, Pearson CJ, Plettner C, Rudolph D, Scheidenberger C, Schmidt KH, Shishkin V, Sohler D, Summerer K, Valiente-Dobon JJ, Walker PM, Weick H, Winkler M, Yordanov O (2004) Angular momentum population in the projectile fragmentation of U-238 at 750 MeV/nucleon, PHYSICAL REVIEW C 69 (2) ARTN 024617 AMERICAN PHYSICAL SOC
Watanabe H, Lorusso G, Nishimura S, Otsuka T, Ogawa K, Xu ZY, Sumikama T, Söderström PA, Doornenbal P, Li Z, Browne F, Gey G, Jung HS, Taprogge J, Vajta Z, Wu J, Yagi A, Baba H, Benzoni G, Chae KY, Crespi FC, Fukuda N, Gernhäuser R, Inabe N, Isobe T, Jungclaus A, Kameda D, Kim GD, Kim YK, Kojouharov I, Kondev FG, Kubo T, Kurz N, Kwon YK, Lane GJ, Moon CB, Montaner-Pizá A, Moschner K, Naqvi F, Niikura M, Nishibata H, Nishimura D, Odahara A, Orlandi R, Patel Z, Podolyák Z, Sakurai H, Schaffner H, Simpson GS, Steiger K, Suzuki H, Takeda H, Wendt A, Yoshinaga K (2014) Monopole-driven shell evolution below the doubly magic nucleus 132Sn explored with the long-lived isomer in 126Pd., Phys Rev Lett 113 (4)
A new isomer with a half-life of 23.0(8) ms has been identified at 2406 keV in (126)Pd and is proposed to have a spin and parity of 10(+) with a maximally aligned configuration comprising two neutron holes in the 1h(11/2) orbit. In addition to an internal-decay branch through a hindered electric octupole transition, ² decay from the long-lived isomer was observed to populate excited states at high spins in (126)Ag. The smaller energy difference between the 10(+) and 7(-) isomers in (126)Pd than in the heavier N=80 isotones can be interpreted as being ascribed to the monopole shift of the 1h(11/2) neutron orbit. The effects of the monopole interaction on the evolution of single-neutron energies below (132)Sn are discussed in terms of the central and tensor forces.
Guastalla G, Dijulio DD, Górska M, Cederkäll J, Boutachkov P, Golubev P, Pietri S, Grawe H, Nowacki F, Sieja K, Algora A, Ameil F, Arici T, Atac A, Bentley MA, Blazhev A, Bloor D, Brambilla S, Braun N, Camera F, Dombrádi ZS, Domingo Pardo C, Estrade A, Farinon F, Gerl J, Goel N, Grèbosz J, Habermann T, Hoischen R, Jansson K, Jolie J, Jungclaus A, Kojouharov I, Knoebel R, Kumar R, Kurcewicz J, Kurz N, Lalovi? N, Merchan E, Moschner K, Naqvi F, Nara Singh BS, Nyberg J, Nociforo C, Obertelli A, Pfützner M, Pietralla N, Podolyák Z, Prochazka A, Ralet D, Reiter P, Rudolph D, Schaffner H, Schirru F, Scruton L, Sohler D, Swaleh T, Taprogge J, Vajta Z, Wadsworth R, Warr N, Weick H, Wendt A, Wieland O, Winfield JS, Wollersheim HJ (2013) Coulomb excitation of Sn104 and the strength of the Sn100 shell closure, Physical Review Letters 110 (17)
A measurement of the reduced transition probability for the excitation of the ground state to the first 2+ state in Sn104 has been performed using relativistic Coulomb excitation at GSI. Sn104 is the lightest isotope in the Sn chain for which this quantity has been measured. The result is a key point in the discussion of the evolution of nuclear structure in the proximity of the doubly magic nucleus Sn100. The value B(E2;0+’2 +)=0.10(4) e2b2 is significantly lower than earlier results for Sn106 and heavier isotopes. The result is well reproduced by shell model predictions and therefore indicates a robust N=Z=50 shell closure. © 2013 American Physical Society.
Zakari-Issoufou A-A, Fallot M, Porta A, Algora A, Tain JL, Valencia E, Rice S, Bui VM, Cormon S, Estienne M, Agramunt J, Aysto J, Bowry M, Briz JA, Caballero-Folch R, Cano-Ott D, Cucoanes A, Elomaa V-V, Eronen T, Estevez E, Farrelly GF, Garcia AR, Gelletly W, Gomez-Hornillos MB, Gorlychev V, Hakala J, Jokinen A, Jordan MD, Kankainen A, Karvonen P, Kolhinen VS, Kondev FG, Martinez T, Mendoza E, Molina F, Moore I, Perez-Cerdan AB, Podolyak Z, Penttila H, Regan PH, Reponen M, Rissanen J, Rubio B, Shiba T, Sonzogni AA, Weber C (2015) Total Absorption Spectroscopy Study of Rb-92 Decay: A Major Contributor to Reactor Antineutrino Spectrum Shape, PHYSICAL REVIEW LETTERS 115 (10) ARTN 102503 AMER PHYSICAL SOC
Podolyak Z, Al Garni S, Casten RF, Cooper JR, Cullen DM, Dewald A, Krucken R, Newman H, Orce JN, Pearson CJ, Ur C, Venturelli R, Vincent S, Wheldon C, Walker PM, Xu FR, Yamamoto A, Zamfir NV (2002) Deviations from axial symmetry in Os-181, PHYSICAL REVIEW C 66 (1) ARTN 011304 AMERICAN PHYSICAL SOC
Mohammadi S, Podolyak ZS (2007) High spin states in (191)Os, IRANIAN JOURNAL OF SCIENCE AND TECHNOLOGY TRANSACTION A-SCIENCE 31 (A2) pp. 171-175 SHIRAZ UNIV
Podolyak Z (2005) Isomeric decay studies with fragmentation beams, ACTA PHYSICA POLONICA B 36 (4) pp. 1269-1279 ACTA PHYSICA POLONICA B, JAGELLONIAN UNIV, INST PHYSICS
Garnsworthy AB, Thompson NJ, Podolyak Z, Walker PM, Williams SJ, Dracoulis GD, de France G, Lane GJ, Andgren K, Bruce AM, Byrne AP, Catford WN, Cederwall B, Jones GA, McGuirk B, Mandal S, Paul ES, Pucknell V, Redon N, Rosse B, Senior RJ, Sletten G (2005) Spectroscopy of Po-212 and At-213 using a He-8 radioactive beam and EXOGAM, JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS 31 (10) pp. S1851-S1854 IOP PUBLISHING LTD
Rudolph D, Hoischen R, Hellström M, Pietri S, Podolyák Z, Regan PH, Garnsworthy AB, Steer SJ, Becker F, Bednarczyk P, Cáceres L, Doornenbal P, Gerl J, Górska M, Grebosz J, Kojouharov I, Kurz N, Prokopowicz W, Schaffner H, Wollersheim HJ, Andersson LL, Atanasova L, Balabanski DL, Bentley MA, Blazhev A, Brandau C, Brown JR, Fahlander C, Johansson EK, Jungclaus A (2008) Evidence for an isomeric 3/2- state in 53Co, European Physical Journal A 36 (2) pp. 131-138
The fragmentation of a 550MeV/u primary beam of 58Ni on a 9Be target has been used to measure time- and energy-correlated ³ decays following the implantation of event-by-event discriminated secondary fragments into a 9Be stopper plate. A new isomeric ³ decay with T 1/2 = 14(46) ns and E ³ = 646.2(2) keV is observed and attributed to the decay of the yrast 3/2- state in 5327Co26 . This short-lived isomeric state has been populated by means of nuclear reactions during the stopping process of the secondary fragments. The experimental findings are discussed in the framework of large-scale spherical shell model calculations in conjunction with isospin symmetry-breaking residual interactions for the A = 53 , T z = ±1/2 mirror nuclei 53Co and 53Fe . © 2008 Società Italiana di Fisica and Springer-Verlag.
Petrache CM, Brant S, Bazzacco D, Falconi G, Farnea E, Lunardi S, Paar V, Podolyak Z, Venturelli R, Vretenar D (1998) Detailed spectroscopy and IBFFM interpretation of the odd-odd nuclei Pr-132 and Pr-130, NUCLEAR PHYSICS A 635 (3) pp. 361-383 ELSEVIER SCIENCE BV
Nara Singh BS, Brock TS, Wadsworth R, Grawe H, Boutachkov P, Braun N, Blazhev A, Liu Z, Górska M, Pietri S, Rudolph D, Domingo-Pardo C, Steer SJ, Ataç A, Bettermann L, Cáceres L, Engert T, Faestermann T, Farinon F, Finke F, Geibel K, Gerl J, Gernhäuser R, Goel N, Gottardo A, Gr)bosz J, Hinke C, Hoischen R, Ilie G, Iwasaki H, Jolie J, Ka_ka_ A, Kojouharov I, Krücken R, Kurz N, Merchán E, Nociforo C, Nyberg J, Pfützner M, Prochazka A, Podolyák Z, Regan PH, Reiter P, Rinta-Antila S, Scholl C, Schaffner H, Söderström PA, Warr N, Weick H, Wollersheim HJ, Woods PJ, Nowacki F (2012) Influence of the np interaction on the ² decay of 94Pd, Physical Review C - Nuclear Physics 86 (4)
We present results from stopped beam rare isotope spectroscopic investigations at the GSI (RISING) experiment based on the detection of ³-ray transitions following the ² decay of 94Pd. A comparison between the measured low-lying level scheme of 94Rh and the prediction from shell-model calculations reveals the important roles of the g 7/2 and g 9/2 orbitals in explaining the structural features. The low values of the Gamow-Teller strengths B(GT) can be attributed to the influence of the neutron-proton interaction, which gives rise to an increased seniority mixing for the nuclear states, thereby leading to a fragmentation of the strength to several daughter levels. These results provide further strong indications that 94Pd resides in the middle of a structural transition region in the Pd isotopes as the N=Z line is approached. © 2012 American Physical Society.
Nomura K, Otsuka T, Rodriguez-Guzman R, Robledo LM, Sarriguren P, Regan PH, Stevenson PD, Podolyak Z (2011) Spectroscopic calculations of the low-lying structure in exotic Os and W isotopes, PHYSICAL REVIEW C 83 (5) ARTN 054303 AMER PHYSICAL SOC
Saito TR, Saito N, Starosta K, Beller J, Pietralla N, Wollersheim HJ, Balabanski DL, Banu A, Bark RA, Beck T, Becker F, Bednarczyk P, Behr K-H, Benzoni G, Bizzeti PG, Boiano C, Bracco A, Brambilla S, Bruenle A, Buerger A, Caceres L, Camera F, Crespi FCL, Doornenbal P, Garnsworthy AB, Geissel H, Gerl J, Gorska M, Grebosz J, Hagemann G, Jolie J, Kavatsyuk M, Kavatsyuk O, Koike T, Kojouharov I, Kurz N, Leske J, Lo Bianco G, Maj A, Mallion S, Mandal S, Maliage M, Otsuka T, Petrache CM, Podolyak Z, Prokopowicz W, Rainovski G, Reiter P, Richard A, Schaffner H, Schielke S, Sletten G, Thompson NJ, Tonev D, Walker J, Warr N, Wieland O, Zhong Q (2008) Yrast and non-yrast 2(+) states of Ce-134 and Nd-136 populated in relativistic Coulomb excitation, PHYSICS LETTERS B 669 (1) pp. 19-23 ELSEVIER SCIENCE BV
Garnsworthy AB, Regan PH, Caceres L, Pietri Y, Sun Y, Rudolph D, Gorska M, Podolyak Z, Steer SJ, Hoischen R, Heinz A, Becker F, Bednarczyk R, Doornenbal P, Geissel H, Gerl J, Grawe H, Grebosz J, Kelic A, Kojouharov I, Kurz N, Montes F, Prokopowicz W, Saito T, Schaffner H, Tachenov S, Werner-Malento E, Wollersheim HJ, Benzoni G, Blank BB, Brandau C, Bruce AM, Camera F, Catford WN, Cullen IJ, Dornbradi Z, Estevez E, Gelletly W, Ilie G, Jolie J, Jones GA, Jungclaus A, Kmiecik M, Kondev FG, Kurtukian-Nieto T, Lalkovski S, Liu Z, Maj A, Myalski S, Pfutzner M, Schwertel S, Shizuma T, Simons AJ, Walker PM, Wieland O, Xu FR (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), PHYSICS LETTERS B 668 (5) pp. 460-460 ELSEVIER SCIENCE BV
Wadsworth R, Singh BSN, Steer AN, Jenkins DC, Bentley MA, Brock T, Davies P, Glover R, Pattabiraman NS, Scholey C, Grahn T, Greenlees PT, Jones P, Jakobsson U, Julin R, Juutinen S, Ketelhut S, Leino M, Nyman M, Perua P, Pakarinen J, Rahkila P, Ruotslainen P, Sorri J, Uusitalo J, Lister CJ, Butler PA, Dimmock M, Joss DT, Thomson J, Rinta-Antila S, Cederwall B, Hadinia B, Sandzelius M, Atac A, Betterman L, Blazhev A, Braun N, Finke F, Geibel K, Ilie G, Iwasaki H, Jolie J, Reiter P, Scholl C, Warr N, Boutachkov P, Caceres L, Domingo C, Engert T, Farinon F, Gerl J, Goel N, Gorska M, Grawe H, Kurz N, Kojuharov I, Pietri S, Nociforo C, Prochazka A, Wollersheim H-J, Eppinger K, Faestermann T, Hinke C, Hoischen R, Kruecken R, Gottardo A, Liu Z, Woods P, Grebosz J, Merchant E, Nyberg J, Soderstrom P-A, Podolyak Z, Regan P, Steer S, Pfutzner M, Rudolph D (2009) THE NORTHWEST FRONTIER: SPECTROSCOPY OF N similar to Z NUCLEI BELOW MASS 100, ACTA PHYSICA POLONICA B 40 (3) pp. 611-620 POLISH ACAD SCIENCES INST PHYSICS
Patel Z, Podolyak Z, Walker PM, Regan PH, Soederstroem P-A, Watanabe H, Ideguchi E, Simpson GS, Nishimura S, Browne F, Doornenbal R, Lorusso G, Rice S, Sinclair L, Sumikama T, Wu J, Xu ZY, Aoi N, Baba H, Garrote FLB, Benzoni G, Daido R, Dombradi Z, Fang Y, Fukuda N, Gey G, Go S, Gottardo A, Inabe N, Isobe T, Kameda D, Kobayashi K, Kobayashi M, Komatsubara T, Kojouharov I, Kubo T, Kurz N, Kuti I, Li Z, Liu HL, Matsushita M, Michimasa S, Moony C-B, Nishibata H, Nishizuka I, Odahara A, Sahin E, Sakurai H, Schaffner H, Suzuki H, Takeda H, Tanaka M, Taprogge J, Vajta Z, Xu FR, Yagi A, Yokoyama R (2016) Decay spectroscopy of Sm-160: The lightest four-quasiparticle K isomer, PHYSICS LETTERS B 753 pp. 182-186 ELSEVIER SCIENCE BV
Taprogge J, Jungclaus A, Grawe H, Nishimura S, Doornenbal P, Lorusso G, Simpson GS, Söderström PA, Sumikama T, Xu ZY, Baba H, Browne F, Fukuda N, Gernhäuser R, Gey G, Inabe N, Isobe T, Jung HS, Kameda D, Kim GD, Kim YK, Kojouharov I, Kubo T, Kurz N, Kwon YK, Li Z, Sakurai H, Schaffner H, Steiger K, Suzuki H, Takeda H, Vajta Z, Watanabe H, Wu J, Yagi A, Yoshinaga K, Benzoni G, Bönig S, Chae KY, Coraggio L, Covello A, Daugas JM, Drouet F, Gadea A, Gargano A, Ilieva S, Kondev FG, Kröll T, Lane GJ, Montaner-Pizá A, Moschner K, Mücher D, Naqvi F, Niikura M, Nishibata H, Odahara A, Orlandi R, Patel Z, Podolyák Z, Wendt A (2014) 1p3/2 proton-hole state in 132Sn and the shell structure along N = 82., Phys Rev Lett 112 (13)
A low-lying state in 131In82, the one-proton hole nucleus with respect to double magic 132Sn, was observed by its ³ decay to the IÀ=1/2- ²-emitting isomer. We identify the new state at an excitation energy of Ex=1353 keV, which was populated both in the ² decay of 131Cd83 and after ²-delayed neutron emission from 132Cd84, as the previously unknown Àp3/2 single-hole state with respect to the 132Sn core. Exploiting this crucial new experimental information, shell-model calculations were performed to study the structure of experimentally inaccessible N=82 isotones below 132Sn. The results evidence a surprising absence of proton subshell closures along the chain of N=82 isotones. The consequences of this finding for the evolution of the N=82 shell gap along the r-process path are discussed.
Morales AI, Benlliure J, Regan PH, Podolyak Z, Gorska M, Alkhomashi N, Pietri S, Kumar R, Casarejos E, Agramunt J, Algora A, Alvarez-Pol H, Benzoni G, Blazhev A, Boutachkov P, Bruce AM, Caceres LS, Cullen IJ, Bacelar AMD, Doornenbal P, Dragosavac D, Estevez ME, Farrelly G, Fujita Y, Garnsworthy AB, Gelletly W, Gerl J, Grebosz J, Hoischen R, Kojouharov I, Kurz N, Lalkovski S, Liu Z, Perez-Loureiro D, Prokopowicz W, Mihai C, Molina F, Muecher D, Rubio B, Schapffner H, Steer SJ, Tamii A, Tashenov S, Dobon JJV, Verma S, Walker PM, Wollersheim HJ, Woods PJ (2009) beta-DELAYED gamma-RAY SPECTROSCOPY OF HEAVY NEUTRON RICH NUCLEI "SOUTH" OF LEAD, ACTA PHYSICA POLONICA B 40 (3) pp. 867-870 POLISH ACAD SCIENCES INST PHYSICS
Podolyák Z, Shand CM, Wilson E, Brown BA, Grawe H, Chiara CJ, Zhu S, Fornal B, Janssens RVF, Bowry M, Bunce M, Carpenter MP, Cieplicka N, Deo AY, Dracoulis GD, Hoffman CR, Kempley RS, Kondev FG, Lane GJ, Lauritsen T, Lotay G, Reed MW, Regan PH, Triguero CR, Seweryniak D, Szpak B, Walker PM (2015) Octupole transitions in the 208Pb region, Journal of Physics: Conference Series 580 (1)
© Published under licence by IOP Publishing Ltd.The 208Pb region is characterised by the existence of collective octupole states. Here we populated such states in 208Pb + 208Pb deep-inelastic reactions. ³-ray angular distribution measurements were used to infer the octupole character of several E3 transitions. The octupole character of the 2318 keV 17- 14+ in 208Pb, 2485 keV 19/2- 13/2+ in 207Pb, 2419 keV 15/2- 9/2+ in 209Pb and 2465 keV 17/2+ 11/2- in 207Tl transitions was demonstrated for the first time. In addition, shell model calculations were performed using two different sets of two-body matrix elements. Their predictions were compared with emphasis on collective octupole states.
Singh BSN, Liu Z, Wadsworth R, Grawe H, Brock TS, Boutachkov P, Braun N, Blazhev A, Gorska M, Pietri S (2011) 16(+) Spin-Gap Isomer in (96)Cd, PHYSICAL REVIEW LETTERS 107 172502 American Physical Society
Swan TPD, Walker PM, Podolyák Z, Reed MW, Dracoulis GD, Lane GJ, Kibédi T, Smith ML (2012) Hindered decays from a non-yrast four-quasiparticle isomer in 164Er, Physical Review C - Nuclear Physics 86 (4)
The half-life of a KÀ=12 + isomer in 164Er has been measured to be 68(2) ns, and new decay pathways have been identified. These include highly K-forbidden ³-ray transitions directly to the ground-state rotational band, with reduced hindrance values that can be compared with those found for heavier nuclides. The new data support the interpretation that the level density is a key variable in determining K-forbidden transition rates. © 2012 American Physical Society.
Podolyak Z, Steer S, Pietri S, Regan P, Rudolph D, Garnsworthy A, Hoischen R, Werner-Malento E, Gerl J, Gorska M, Wollersheim H-J (2006) NUCL 40-Nuclear structure and reaction studies: Isomers used as a tool, ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY 232 AMER CHEMICAL SOC
Petrache CM, Bazzacco D, Bednarczyk P, de Angelis G, De Poli M, Fahlander C, Falconi G, Farnea E, Gadea A, Lunardon M, Lunardi S, Marginean N, Menegazzo R, Pavan P, Podolyak Z, Alvarez CR, Ur CA, Venturelli R, Zhu LH, Wyss R (1997) Rotational quenching of the N=72 shell gap and the role of the nu i(13/2) intruder orbital in Nd-132, PHYSICS LETTERS B 415 (3) pp. 223-230 ELSEVIER SCIENCE BV
Taprogge J, Jungclaus A, Grawe H, Nishimura S, Doornenbal P, Lorusso G, Simpson GS, Soederstroem P-A, Sumikama T, Xu ZY, Baba H, Browne F, Fukuda N, Gernhaeuser R, Gey G, Inabe N, Isobe T, Jung HS, Kameda D, Kim GD, Kim Y-K, Kojouharov I, Kubo T, Kurz N, Kwon YK, Li Z, Sakurai H, Schaffner H, Steiger K, Suzuki H, Takeda H, Vajta Z, Watanabe H, Wu J, Yagi A, Yoshinaga K, Benzoni G, Boenig S, Chae KY, Coraggio L, Covello A, Daugas J-M, Drouet F, Gadea A, Gargano A, Ilieva S, Kondev FG, Kroell T, Lane GJ, Montaner-Piza A, Moschner K, Mucher D, Naqvi F, Niikura M, Nishibata H, Odahara A, Orlandi R, Patel Z, Podolyak Z, Wendt A (2015) beta decay of Cd-129 and excited states in In-129, PHYSICAL REVIEW C 91 (5) ARTN 054324 AMER PHYSICAL SOC
Marginean N, Bucurescu D, Alvarez CR, Ur CA, Sun Y, Bazzacco D, Lunardi S, de Angelis G, Axiotis M, Farnea E, Gadea A, Ionescu-Bujor M, Iordachescu A, Krolas W, Kroll T, Lenzi SM, Martinez T, Menegazzo R, Napoli DR, Pavan P, Podolyak Z, De Poli M, Quintana B, Spolaore P (2002) Delayed alignments in the N=Z nuclei Mo-84 and Ru-88, PHYSICAL REVIEW C 65 (5) ARTN 051303 AMER PHYSICAL SOC
Mason PJR, Alharbi T, Regan PH, Mrginean N, Podolyàk Z, Alkhomashi N, Bender PC, Bowry M, Bostan M, Bucurescu D, Bruce AM, Cta-Danil G, Cta-Danil I, Chakrabarti R, Deleanu D, Detistov P, Erduran MN, Filipescu D, Garg U, Glodariu T, Ghic D, Ghugre SS, Kusoglu A, Mrginean R, Mihai C, Nakhostin M, Negret A, Pascu S, Triguero CR, Sava T, Simpson EC, Sinha AK, Stroe L, Suliman G, Zamfir NV (2012) Half-life of the I À 4 - intruder state in 34P using LaBr 3:Ce fast timing, Journal of Physics: Conference Series 381 (1)
The half-life of the I À 4 - intruder state at 2305 keV in 3415P19 has been measured using ³-ray coincident fast timing with LaBr 3:Ce scintillation detectors. Excited states in 34P were populated in the 18O( 18O,pn) 34P reaction at a beam energy of 36 MeV at the Tandem Laboratory at the National Institute of Physics and Nuclear Engineering, Bucharest, Romania. A half-life of t 1/2
Steer SJ, Podolyak Z, Pietri S, Gorska M, Regan PH, Rudolph D, Werner-Malento E, Garnsworthy AB, Hoischen R, Gerl J, Wollersheim HJ, Maier KH, Grawe H, Becker F, Bednarczyk P, Caceres L, Doornenbal P, Geissel H, Greabosz J, Kelic A, Kojouharov I, Kurz N, Montes F, Prokopowicz W, Saito T, Schaffner H, Tashenov S, Heinz A, Pfuetzner M, Kurtukian-Nieto T, Benzoni G, Jungclaus A, Balabanski DL, Brandau C, Brown BA, Bruce AM, Catford WN, Cullen IJ, Dombradi Z, Estevez ME, Gelletly W, Ilie G, Jolie J, Jones GA, Kmiecik M, Kondev FG, Kruecken R, Lalkovski S, Liu Z, Maj A, Myalski S, Schwertel S, Shizuma T, Walker PM, Wieland O (2008) Single-particle behavior at N=126: Isomeric decays in neutron-rich Pt-204, PHYSICAL REVIEW C 78 (6) ARTN 061302 AMER PHYSICAL SOC
Watanabe H, Yamaguchi K, Odahara A, Sumikama T, Nishimura S, Yoshinaga K, Li Z, Miyashita Y, Sato K, Prochniak L, Baba H, Berryman JS, Blasi N, Bracco A, Camera F, Chiba J, Doornenbal P, Go S, Hashimoto T, Hayakawa S, Hinke C, Hinohara N, Ideguchi E, Isobe T, Ito Y, Jenkins DG, Kawada Y, Kobayashi N, Kondo Y, Kruecken R, Kubono S, Lorusso G, Nakano T, Nakatsukasa T, Kurata-Nishimura M, Ong HJ, Ota S, Podolyak Z, Sakurai H, Scheit H, Steiger K, Steppenbeck D, Sugimoto K, Tajiri K, Takano S, Takashima A, Teranishi T, Wakabayashi Y, Walker PM, Wieland O, Yamaguchi H (2011) Development of axial asymmetry in the neutron-rich nucleus Mo-110, PHYSICS LETTERS B 704 (4) pp. 270-275 ELSEVIER SCIENCE BV
Mason PJR, Alharbi T, Regan PH, Marginean N, Podolyak Z, Alkhomashi N, Bender PC, Bowry M, Bostan M, Bucurescu D, Bruce AM, Cata-Danil G, Cata-Danil I, Chakrabarti R, Deleanu D, Detistov P, Erduran MN, Filipescu D, Garg U, Glodariu T, Ghita D, Ghugre SS, Kusoglu A, Marginean R, Mihai C, Nakhostin M, Negret A, Pascu S, Triguero CR, Sava T, Simpson EC, Sinha AK, Stroe L, Suliman G, Zamfir NV (2012) Half-life of the I-pi=4(-) Intruder State in P-34 Using LaBr3:Ce Fast Timing, RUTHERFORD CENTENNIAL CONFERENCE ON NUCLEAR PHYSICS, 2011 381 IOP PUBLISHING LTD
Regis J-M, Jolie J, Mach H, Simpson GS, Blazhev A, Pascovici G, Pfeiffer M, Rudigier M, Saed-Samii N, Warr N, Blanc A, de France G, Jentschel M, Koester U, Mutti P, Soldner T, Ur CA, Urban W, Bruce AM, Drouet F, Fraile LM, Ilieva S, Korten W, Kroell T, Lalkovski S, Marginean N, Paziy V, Podolyak Z, Regan PH, Stezowski O, Vancraeyenest A (2015) The Generalized Centroid Difference method for lifetime measurements via gamma-gamma coincidences using large fast-timing arrays, CGS15 - CAPTURE GAMMA-RAY SPECTROSCOPY AND RELATED TOPICS 93 E D P SCIENCES
Shand CM, Wilson E, Podolyák Z, Grawe H, Brown BA, Fornal B, Janssens RVF, Bowry M, Bunce M, Carpenter MP, Carroll RJ, Chiara CJ, Cieplicka-OryDczak N, Deo AY, Dracoulis GD, Hoffman CR, Kempley RS, Kondev FG, Lane GJ, Lauritsen T, Lotay G, Reed MW, Regan PH, Rodriguez-Triguero C, Seweryniak D, Szpak B, Walker PM, Zhu S (2015) Structure of <sup>207</sup>Pb populated in <sup>208</sup>Pb + <sup>208</sup>Pb deep-inelastic collisions, Acta Physica Polonica B 46 (3) pp. 619-622
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
Farnea E, de Angelis G, Gadea A, Bizzeti PG, Dewald A, Eberth J, Algora A, Axiotis M, Bazzacco D, Bizzeti-Sona AM, Brandolini F, Colo G, Gelletly W, Kaci MA, Kintz N, Klug T, Kroll T, Lenzi SM, Lunardi S, Marginean N, Martinez T, Menegazzo R, Napoli DR, Nyberg J, Pavan P, Podolyak Z, Petrache CM, Quintana B, Rubio B, Spolaore P, Steinhardt T, Tain JL, Thelen O, Ur CA, Venturelli R, Wesizflog M (2003) Isospin mixing in the N = Z nucleus Ge-64, PHYSICS LETTERS B 551 (1-2) PII S0370-2693(02)03022-8 pp. 56-62 ELSEVIER SCIENCE BV
Lorusso G, Nishimura S, Xu ZY, Jungclaus A, Shimizu Y, Simpson GS, Söderström PA, Watanabe H, Browne F, Doornenbal P, Gey G, Jung HS, Meyer B, Sumikama T, Taprogge J, Vajta Z, Wu J, Baba H, Benzoni G, Chae KY, Crespi FC, Fukuda N, Gernhäuser R, Inabe N, Isobe T, Kajino T, Kameda D, Kim GD, Kim YK, Kojouharov I, Kondev FG, Kubo T, Kurz N, Kwon YK, Lane GJ, Li Z, Montaner-Pizá A, Moschner K, Naqvi F, Niikura M, Nishibata H, Odahara A, Orlandi R, Patel Z, Podolyák Z, Sakurai H, Schaffner H, Schury P, Shibagaki S, Steiger K, Suzuki H, Takeda H, Wendt A, Yagi A, Yoshinaga K (2015) ²-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., Phys Rev Lett 114 (19)
The ²-decay half-lives of 110 neutron-rich isotopes of the elements from _{37}Rb to _{50}Sn were measured at the Radioactive Isotope Beam Factory. The 40 new half-lives follow robust systematics and highlight the persistence of shell effects. The new data have direct implications for r-process calculations and reinforce the notion that the second (AH130) and the rare-earth-element (AH160) abundance peaks may result from the freeze-out of an (n,³)Ä(³,n) equilibrium. In such an equilibrium, the new half-lives are important factors determining the abundance of rare-earth elements, and allow for a more reliable discussion of the r process universality. It is anticipated that universality may not extend to the elements Sn, Sb, I, and Cs, making the detection of these elements in metal-poor stars of the utmost importance to determine the exact conditions of individual r-process events.
Benzoni G, Morales AI, Bracco A, Camera F, Crespi FCL, Corsi AM, Leoni S, Million B, Nicolini R, Wieland O, Valiente-Dobón JJ, Gottardo A, de Angelis G, Napoli DR, Sahin E, Gottardo A, Lunardi S, Bracco A, Camera F, Crespi FCL, Corsi AM, Leoni S, Nicolini R, Gadea A, Algora A, Lunardi S, Bazzacco D, Farnea E, Menegazzo R, Mengoni D, Recchia F, Ur CA, Boutachkov P, Górska M, Pietri S, Weick H, Cortes ML, Domingo-Pardo C, Engert T, Farinon F, Geissel H, Gerl J, Goel N, Gregor E, Habermann T, Hoischen R, Kojouharov I, Kurz N, Naqvi F, Nociforo C, Prochazka A, Prokopowicz W, Schaffner H, Sharma A, Wollersheim H-J, Bruce AM, Denis Bacelar AM, Grebosz J, Podolyak Z, Regan PH, Al-Dahan N, Bowry M, Bunce M, Deo AY, Farrelly GF, Reed MW, Swan TPD, Walker PM, Pfützner M, Alcántara Núñez J, Ayyad Y, Benlliure J, Alkhomashi N, Allegro PRP, Ribas RV, Casarejos E, Doncel M, Dombradi Z, Eppinger K, Klupp S, Steiger K, Hoischen R, Rudolph D, Janik R, Sitar B, Strmen P, Szarka I, Mandal S, Siwal D, Naqvi F, Corsi AM, Al-Dahan N, Walker PM (2012) First measurement of beta decay half-lives in neutron-rich Tl and Bi isotopes, Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 715 (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 ²-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.
Regan PH, Jones GA, Podolyak Z, Yoshinaga N, Higashiyama K, de Angelis G, Zhang YH, Gadea A, Ur CA, Axiotis M, Bazzacco D, Broda R, Bucurescu D, Farnea E, Gelletly W, Ionescu-Bujor M, Iordachescu A, Kroll T, Langdown SD, Lenzi S, Lunardi S, Marginean N, Martinez T, Medina N, Menegazzo R, Napoli DR, Quintana B, Rubio B, Rusu C, Schwenger R, Tonev D, Valiente Dobon JJ, von Oertzen W (2006) Multinucleon transfer reactions to study single-particle evolution in Se isotopes, Capture Gamma-Ray Spectroscopy and Related Topics 819 pp. 464-471 AMER INST PHYSICS
Doornenbal P, Reiter P, Grawe H, Otsuka T, Al-Khatib A, Banu A, Beck T, Becker F, Bednarczyk P, Benzoni G, Bracco A, Buerger A, Caceres L, Camera F, Chmel S, Gorska M, Grebosz J, Huebel H, Kavatsyuk M, Kavatsyuk O, Kmiecik M, Kojouharov I, Kurz N, Lozeva R, Maj A, Mandal S, Meczynski W, Million B, Podolyak Z, Richard A, Saito N, Saito T, Schaffner H, Seidlitz M, Striepling T, Utsuno Y, Walker J, Warr N, Weick H, Wieland O, Winkler M, Wollersheim HJ (2007) The T=2 mirrors Ca-36 and S-36: A test for isospin symmetry of shell gaps at the driplines, PHYSICS LETTERS B 647 (4) pp. 237-242 ELSEVIER SCIENCE BV
Podolyak Z (2012) Prolate-oblate shape transition in heavy neutron-rich nuclei, RUTHERFORD CENTENNIAL CONFERENCE ON NUCLEAR PHYSICS, 2011 381 IOP PUBLISHING LTD
Caamano M, Walker PM, Regan PH, Pfutzner M, Podolyak Z, Gerl J, Hellstrom M, Mayet P, Mineva MN, Aprahamian A, Benlliure J, Bruce AM, Butler PA, Gil DC, Cullen DM, Doring J, Enqvist T, Fox C, Narro JG, Geissel H, Gelletly W, Giovinazzo J, Gorska M, Grawe H, Grzywacz R, Kleinbohl A, Korten W, Lewitowicz M, Lucas R, Mach H, O'Leary CD, De Oliveira F, Pearson CJ, Rejmund F, Rejmund M, Sawicka M, Schaffner H, Schlegel C, Schmidt K, Schmidt KH, Stevenson PD, Theisen C, Vives F, Warner DD, Wheldon C, Wollersheim HJ, Wooding S, Xu F, Yordanov O (2005) Isomers in neutron-rich A approximate to 190 nuclides from Pb-208 fragmentation, EUROPEAN PHYSICAL JOURNAL A 23 (2) pp. 201-215 SPRINGER
Podolyak Z, Gerl J, Hellstrom M, Becker F, Gladnishki KA, Gorska M, Kelic A, Kopatch Y, Mandal S, Regan PH, Schmidt KH, Walker PM, Wollersheim HJ, Banu A, Benzoni G, Boardman H, Casarejos E, Ekman J, Geissel H, Grawe H, Hohn D, Kojouharov I, Leske J, Lozeva R, Mineva MN, Neyens G, Page RD, Pearson CJ, Portillo M, Rudolph D, Saito N, Schaffner H, Sohler D, Summerer K, Valiente-Dobon JJ, Wheldon C, Weick H, Winkler M (2006) High angular momentum states populated in fragmentation reactions, PHYSICS LETTERS B 632 (2-3) pp. 203-206 ELSEVIER SCIENCE BV
Caballero-Folch R, Domingo-Pardo C, Cortès G, Taín JL, Agramunt J, Algora A, Ameil F, Ayyad Y, Benlliure J, Bowry M, Calviño F, Cano-Ott D, Davinson T, Dillmann I, Estrade A, Evdokimov A, Faestermann T, Farinon F, Galaviz D, García-Ríos A, Geissel H, Gelletly W, Gernhäuser R, Gómez-Hornillos MB, Guerrero C, Heil M, Hinke C, Knöbel R, Kojouharov I, Kurcewicz J, Kurz N, Litvinov Y, Maier L, Marganiec J, Marta M, Martínez T, Montes F, Mukha I, Napoli DR, Nociforo C, Paradela C, Pietri S, Podolyák Z, Prochazka A, Rice S, Riego A, Rubio B, Schaffner H, Scheidenberger C, Smith K, Sokol E, Steiger K, Sun B, Takechi M, Testov D, Weick H, Wilson E, Winfield JS, Wood R, Woods PJ, Yeremin A (2014) ²-decay and ²-delayed Neutron Emission Measurements at GSI-FRS Beyond N=126, for r-process Nucleosynthesis, Nuclear Data Sheets 120 pp. 81-83
New measurements of very exotic nuclei in the neutron-rich region beyond N=126 have been performed at the GSI facility with the fragment separator (FRS). The aim of the experiment is to determine half-lives and ²-delayed neutron emission branching ratios of isotopes of Hg, Tl and Pb in this region. This contribution summarizes final counting statistics for identification and for implantation, as well as the present status of the data analysis of the half-lives. In summary, isotopes of Pt, Au, Hg, Tl, Pb, Bi, Po, At, Rn and Fr were clearly identified and several of them (208-211Hg, 211-215Tl, 214-218Pb) were implanted with enough statistics to determine their half-lives. About half of them are expected to be neutron emitters, in such cases it will become possible to obtain the neutron emission probabilities, Pn. © 2014 Elsevier Inc.
Steer SJ, Podolyak Z, Pietri S, Gorska M, Grawe H, Maier KH, Regan PH, Rudolph D, Garnsworthy AB, Hoischen R (2011) Isomeric states observed in heavy neutron-rich nuclei populated in the fragmentation of a (208)Pb beam, PHYSICAL REVIEW C 84 (4) ARTN 044313 American Physical Society
Gottardo A, Valiente-Dobón JJ, Benzoni G, Lunardi S, Gadea A, Algora A, Al-Dahan N, De Angelis G, Ayyad Y, Bazzacco D, Benlliure J, Boutachkov P, Bowry M, Bracco A, Bruce AM, Bunce M, Camera F, Casarejos E, Cortes ML, Crespi FCL, Corsi A, Denis Bacelar AM, Deo AY, Domingo-Pardo C, Doncel M, Engert T, Eppinger K, Farrelly GF, Farinon F, Farnea E, Geissel H, Gerl J, Goel N, Górska M, Grebosz J, Gregor E, Habermann T, Hoischen R, Janik R, John PR, Klupp S, Kojouharov I, Kurz N, Lenzi SM, Leoni S, Mandal S, Menegazzo R, Mengoni D, Million B, Modamio V, Morales AI, Napoli DR, Naqvi F, Nicolini R, Nociforo C, Pfützner M, Pietri S, Podolyák Z, Prochazka A, Prokopowicz W, Recchia F, Regan PH, Reed MW, Rudolph D, Sahin E, Schaffner H, Sharma A, Sitar B, Siwal D, Steiger K, Strmen P, Swan TPD, Szarka I, Ur CA, Walker PM, Weick H, Wieland O, Wollersheim HJ (2014) Isomeric decay spectroscopy of the Bi 217 isotope, Physical Review C - Nuclear Physics 90 (3)
© 2014 American Physical Society.The structure of the neutron-rich bismuth isotope Bi217 has been studied for the first time. The fragmentation of a primary U238 beam at the FRS-RISING setup at GSI was exploited to perform ³-decay spectroscopy, since ¼s isomeric states were expected in this nucleus. Gamma rays following the decay of a t1/2=3 ¼s isomer were observed, allowing one to establish the low-lying structure of Bi217. The level energies and the reduced electric quadrupole transition probability B(E2) from the isomeric state are compared to large-scale shell-model calculations.
Taylor MJ, Hammond G, Bentley MA, Becker F, Grebosz J, Banu A, Barton CJ, Beck T, Bednarczyk P, Bracco A, Bruce AM, Bullock LC, Burger A, Camera F, Chandler C, Doornenbal P, Gerl J, Geissel H, Gorska M, Hellstrom M, Judson DS, Kojouharov I, Kurz N, Lozeva R, Maj A, Mandal S, McGuirk B, Muralithar S, Paul ES, Podolyak Z, Prokopowicz W, Rudolph D, Saito N, Saito TR, Schaffner H, Simpson J, Warner DD, Weick H, Wheldon C, Winkler M, Wollersheim HJ (2005) Spectroscopy of nuclei approaching the proton drip-line using a secondary-fragmentation technique with the RISING detector array, JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS 31 (10) pp. S1527-S1530 IOP PUBLISHING LTD
Taprogge J, Jungclaus A, Grawe H, Nishimura S, Xu ZY, Doornenbal P, Lorusso G, Nácher E, Simpson GS, Söderström PA, Sumikama T, Baba H, Browne F, Fukuda N, Gernhäuser R, Gey G, Inabe N, Isobe T, Jung HS, Kameda D, Kim GD, Kim YK, Kojouharov I, Kubo T, Kurz N, Kwon YK, Li Z, Sakurai H, Schaffner H, Steiger K, Suzuki H, Takeda H, Vajta Z, Watanabe H, Wu J, Yagi A, Yoshinaga K, Benzoni G, Bönig S, Chae KY, Coraggio L, Covello A, Daugas JM, Drouet F, Gadea A, Gargano A, Ilieva S, Kondev FG, Kröll T, Lane GJ, Montaner-Pizá A, Moschner K, Mücher D, Naqvi F, Niikura M, Nishibata H, Odahara A, Orlandi R, Patel Z, Podolyák Z, Wendt A (2014) Identification of a millisecond isomeric state in Cd81129 via the detection of internal conversion and Compton electrons, Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 738 pp. 223-227
© 2014 The Authors.The decay of an isomeric state in the neutron-rich nucleus 129Cd has been observed via the detection of internal conversion and Compton electrons providing first experimental information on excited states in this nucleus. The isomer was populated in the projectile fission of a 238U beam at the Radioactive Isotope Beam Factory at RIKEN. From the measured yields of ³-rays and internal conversion electrons, a multipolarity of E3 was tentatively assigned to the isomeric transition. A half-life of T1/2=3.6(2)ms was determined for the new state which was assigned a spin of (21/2+), based on a comparison to shell model calculations performed using state-of-the-art realistic effective interactions.
Régis JM, Mach H, Simpson GS, Jolie J, Pascovici G, Saed-Samii N, Warr N, Bruce A, Degenkolb J, Fraile LM, Fransen C, Ghita DG, Kisyov S, Koester U, Korgul A, Lalkovski S, MÎrginean N, Mutti P, Olaizola B, Podolyak Z, Regan PH, Roberts OJ, Rudigier M, Stroe L, Urban W, Wilmsen D (2013) The generalized centroid difference method for picosecond sensitive determination of lifetimes of nuclear excited states using large fast-timing arrays, Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 726
A novel method for direct electronic "fast-timing" lifetime measurements of nuclear excited states via ³-³ coincidences using an array equipped with Nâ??N equally shaped very fast high-resolution LaBr3(Ce) scintillator detectors is presented. Analogous to the mirror symmetric centroid difference method, the generalized centroid difference method provides two independent "start" and "stop" time spectra obtained by a superposition of the N(N-1) ³-³ time difference spectra of the N detector fast-timing system. The two fast-timing array time spectra correspond to a forward and reverse gating of a specific ³-³ cascade. Provided that the energy response and the electronic time pick-off of the detectors are almost equal, a mean prompt response difference between start and stop events is calibrated and used as a single correction for lifetime determination. These combined fast-timing arrays mean ³-³ time-walk characteristics can be determined for 40keV
Agramunt J, García AR, Algora A, Äystö J, Caballero-Folch R, Calviño F, Cano-Ott D, Cortés G, Domingo-Pardo C, Eronen T, Gelletly W, Gómez-Hornillos MB, Hakala J, Jokinen A, Jordan D, Kankainen A, Kolkinen V, Martínez T, Mason PJ, Moore I, Penttilä H, Podolyák Z, Reponen M, Riego A, Rissanen J, Rubio B, Saastamoinen A, Tain JL, Valencia E (2014) New Beta-delayed Neutron Measurements in the Light-mass Fission Group, Nuclear Data Sheets 120 pp. 74-77
A new accurate determination of beta-delayed neutron emission probabilities from nuclei in the low mass region of the light fission group has been performed. The measurements were carried out using the BELEN 4À neutron counter at the IGISOL-JYFL mass separator in combination with a Penning trap. The new results significantly improve the uncertainties of neutron emission probabilities for 91Br, 86As, 85As, and 85Ge nuclei. © 2014 Elsevier Inc.
Axiotis M, Lenzi SM, Marginean N, Napoli DR, Ur CA, Brandolini F, Farnea E, Gadea A, Algora A, de Angelis G, Bazzacco D, Bizzeti PG, Bizzeti-Sona A, von Brentano P, Cameron JA, Dewald A, Grawe H, Kalfas CA, Lunardi S, Martinez T, Papadopoulos CT, Podolyak Z, Alvarez CR, Sanchez-Solano J, Tonev D, Vlastou R (2007) High-spin gamma-ray spectroscopy in Mn-52, PHYSICAL REVIEW C 76 (1) ARTN 014303 AMER PHYSICAL SOC
Regan PH, Alkhomashi N, Al-Dahan N, Podolyák Z, Suckling EB, Stevenson PD, Pietri SB, Steer SJ, Garnsworthy AB, Gelletly W, Benlliure J, Morales AI, Gerl J, Górska M, Wollersheim HJ, Kumar R, Grebosz J, Algora A, Benzoni G, Boutachkov P, Bruce AM, Casarejos E, Cullen IJ, Bacelar AMD, Blazhev A, Estevez ME, Farrelly G, Fujita Y, Hoischen R, Lalkovski S, Liu Z, Kojouharov I, Kurz N, Mihai C, Molina F, Mücher D, Rubio B, Schaffner H, Tashenov S, Tamii A, Dobón JJV, Walker PM, Woods PJ (2009) New insights into the structure of exotic nuclei using the rising active stopper, AIP Conference Proceedings 1090 pp. 122-129
This conference paper outlines the operation and some of the preliminary physics results using the GSI RISING active stopper. Data are presented from an experiment using combined isomer and beta-delayed gamma-ray spectroscopy to study low-lying spectral and decay properties of heavy-neutron-rich nuclei around A-190 produced following the relativistic projectile fragmentation of 208Pb primary beam. The response of the RISING active stopper detector is demonstrated for both the implantation of heavy secondary fragments and in-situ decay of beta-particles. Beta-delayed gamma-ray spectroscopy following decays of the neutron- rich nucleus 194Re is presented to demonstrate the experimental performance of the set-up. The resulting information inferred from excited states in the W and Os daughter nuclei is compared with results from Skyrme Hartree-Fock predictions of the evolution of nuclear shape. © 2009 American Institute of Physics.
DOMBRADI Z, PODOLYAK Z, BRANT S, PAAR V (1995) EFFECTIVE PROTON-NEUTRON INTERACTION IN THE SINGLY CLOSED-SHELL REGION, PHYSICA SCRIPTA T56 pp. 239-242 ROYAL SWEDISH ACAD SCIENCES
Regan PH, Garnsworthy AB, Pietri S, Caceres L, Gorska M, Rudolph D, Podolyak Z, Steer SJ, Hoischen R, Gerl J, Wollersheim HJ, Grebosz J, Schaffner H, Prokopwicz W, Kojouharov I, Becker F, Bednarczyk P, Doornenball P, Geissel H, Grawe H, Kelic A, Kurz N, Montes F, Saito T, Tashenov S, Werner-Malento E, Heinz A, Atanasova L, Balabanski D, Benzoni G, Blank B, Blazhev A, Brandau C, Bruce AM, Camera F, Cullen IJ, Estevez ME, Fahlander C, Gelletly W, Ilie G, Jungclaus A, Jolie J, Kurtukian-Nieto T, Liu Z, Kmiecik M, Maj A, Myalski S, Schwertel S, Shizuma T, Simons AJ, Walker PM, Wieland O (2007) Isomer spectroscopy using relativistic projectile fragmentation at the N=Z line for A similar to 80 -> 90., NUCLEAR PHYSICS A 787 pp. 491C-498C ELSEVIER SCIENCE BV
Caballero-Folch R, Domingo-Pardo C, Taín JL, Cortés G, Agramunt J, Algora A, Ameil F, Ayyad Y, Benlliure J, Bowry M, Calviño F, Cano-Ott D, Davinson T, Dillmann I, Estrade A, Evdokimov A, Faestermann T, Farinon F, Galaviz D, García-Rios A, Geissel H, Gelletly W, Gernhäuser R, Gómez-Hornillos MB, Guerrero C, Heil M, Hinke C, Knöbel R, Kojouharov I, Kurcewicz J, Kurz N, Litvinov Y, Maier L, Marganiec J, Marta M, Martínez T, Montes F, Mukha I, Napoli DR, Nociforo C, Paradela C, Pietri S, Podolyák Z, Prochazka A, Rice S, Riego A, Rubio B, Schaffner H, Scheidenberger C, Smith K, Sokol E, Steiger K, Sun B, Takechi M, Testov D, Weick H, Wilson E, Winfield JS, Wood R, Woods P, Yeremin A (2013) ²-delayed neutron emission measurements around the third r-process abundance peak, AIP Conference Proceedings 1541 pp. 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 ²-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.
Rice S, Valencia E, Algora A, Tain JL, Regan PH, Podolyak Z, Agramunt J, Gelletly W, Nichols AL (2012) Decay Heat Measurements Using Total Absorption Gamma-ray Spectroscopy, RUTHERFORD CENTENNIAL CONFERENCE ON NUCLEAR PHYSICS, 2011 381 IOP PUBLISHING LTD
Nakhostin M, Podolyak Z, Sellin PJ (2013) Application of pulse-shape discrimination to coplanar CdZnTe detectors, Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 729 pp. 541-545
A digital pulse-shape discrimination algorithm for the identification of multi-site ³-ray interactions in coplanar CdZnTe detectors has been developed. The algorithm is used to suppress the Compton continuum in ³-ray spectroscopy measurements by rejecting the single-site events. The results of our study with a 15×15×7.5 mm3 detector demonstrate the effectiveness of this approach for revealing low intensity ³-ray peaks in the examined energy range (511-1274 keV), which is of importance for environmental and security applications. The method is also very useful for background reduction in the neutrinoless double beta-decay experiments for which coplanar CdZnTe detectors are of interest. © 2013 Elsevier B.V.
Mason PJR, Podolyak Z, Arginean NM, Regan PH, Alexander T, Algora A, Alharbi T, Bowry M, Britton R, Bucurescu D, Bruce AM, Bunce M, Cata-Danil G, Cata-Danil I, Cooper N, Deleanu D, Delion D, Filipescu D, Gelletly W, Glodariu T, Gheorghe I, Ghita D, Ilie G, Ivanova D, Kisyov S, Lalkovski S, Lica R, Liddick SN, Marginean R, Mihai C, Mulholland K, Negret A, Nita CR, Rice S, Roberts OJ, Sava T, Smith JF, Soederstroem P-A, Stevenson PD, Stroe L, Toma S, Townsley C, Werner V, Wilson E, Wood RT, Zamfir NV, Zhekova M (2012) Li-7-Induced Reactions for Fast-Timing With LaBr3:Ce Detectors, NUCLEAR STRUCTURE AND DYNAMICS '12 1491 pp. 93-96 AMER INST PHYSICS
Wilson E, Podolyák Z, Grawe H, Brown BA, Chiara CJ, Zhu S, Fornal B, Janssens RVF, Shand CM, Bowry M, Bunce M, Carpenter MP, Cieplicka-OryDczak N, Deo AY, Dracoulis GD, Hoffman CR, Kempley RS, Kondev FG, Lane GJ, Lauritsen T, Lotay G, Reed MW, Regan PH, Rodríguez Triguero C, Seweryniak D, Szpak B, Walker PM (2015) Core excitations across the neutron shell gap in <sup>207</sup>Tl, Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 747 pp. 88-92
© 2015 The Authors.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.
Podolyak Z, Regan PH, Pfutzner M, Gerl J, Hellstrom M, Caamano M, Mayet P, Schlegel C, Aprahamian A, Benlliure J, Bruce AM, Butler PA, Gil DC, Cullen DM, Doring J, Enqvist T, Rejmund F, Fox C, Narro JG, Geissel H, Gelletly W, Giovinazzo J, Gorska M, Grawe H, Grzywacz R, Kleinbohl A, Korten W, Lewitowicz M, Lucas R, Mach H, Mineva M, O'Leary CD, De Oliveira F, Pearson CJ, Rejmund M, Sawicka M, Schaffner H, Schmidt K, Theisen C, Walker PM, Warner DD, Wheldon C, Wollersheim HJ, Wooding SC, Xu FR (2000) Isomer spectroscopy of neutron rich W-190(116), PHYSICS LETTERS B 491 (3-4) pp. 225-231 ELSEVIER SCIENCE BV
Ionescu-Bujor M, Iordachescu A, Brandolini F, De Poli M, Marginean N, Bucurescu D, Lenzi SM, Medina NH, Napoli DR, Podolyak Z, Pavan P, Ribas RV, Alvarez CR, Ur CA (2002) Quadrupole moment of the K-pi=14(+) isomer in W-176, PHYSICS LETTERS B 541 (3-4) PII S0370-2693(02)02263-3 pp. 219-226 ELSEVIER SCIENCE BV
Rudolph D, Pietri S, Podolyak Z, Regan PH, Garnsworthy AB, Hoischen R, Steer SJ, Becker F, Bednarczyk P, Caceres L, Doornenbal P, Geissel H, Gerl J, Gorska M, Grebosz J, Kelic A, Kojouharov I, Kurz N, Montes F, Prokopowicz W, Saito T, Schaffner H, Tashenov S, Werner-Malento E, Wollersheim HJ, Andersson L-L, Atanasova L, Balabanski DL, Bentley MA, Benzoni G, Blank B, Blazhev A, Brandau C, Brown JR, Bruce AM, Camera F, Catford WN, Cullen IJ, Dombradi Z, Estevez E, Fahlander C, Gelletly W, Heinz A, Hellstrom M, Ilie G, Johansson EK, Jolie J, Jones GA, Jungclaus A, Kmiecik M, Kondev FG, Kurtukian-Nieto T, Lalkovski S, Liu Z, Maj A, Myalski S, Pfutzner M, Shizuma T, Simons AJ, Schwertel S, Walker PM, Wieland O (2007) Exciting isomers from the first stopped-beam RISING campaign, EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS 150 pp. 173-176 EDP SCIENCES S A
Naqvi F, Gorska M, Caceres L, Jungclaus A, Pfuetzner M, Grawe H, Nowacki F, Sieja K, Pietri S, Werner-Malento E, Regan PH, Rudolf D, Podolyak Z, Jolie J, Andgren K, Beck T, Bednarczyk P, Benlliure J, Benzoni G, Bruce AM, Casarejos E, Cederwall B, Crespi FCL, Detistov P, Dombradi Z, Doornenbal P, Geissel H, Gerl J, Grebosz J, Hadinia B, Hellstrom M, Hoischen R, Ilie G, Khaplanov A, Kojouharov I, Kmiecik M, Kurz N, Lalkovski S, Maj A, Mandal S, Modamio V, Montes F, Myalski S, Prokopowicz W, Reiter P, Schaffner H, Simpson G, Sohler D, Steer SJ, Tashenov S, Walker J, Wieland O, Wollersheim HJ (2010) Isomer spectroscopy of Cd-127, PHYSICAL REVIEW C 82 (3) ARTN 034323 AMER PHYSICAL SOC
Alexander T, Podolyák Z, Cortes ML, Gerl J, Rudolph D, Sarmiento LG, Ameil F, Arici T, Bazzacco D, Bauer C, Bentley MA, Blazhev A, Bowry M, Boutachkov P, Carroll R, Fahlander C, Gadea A, Gellanki J, Gelletly W, Givechev A, Goel N, Golubev P, Górska M, Gottardo A, Gregor E, Guastalla G, Habermann T, Hackstein M, Jungclaus A, Kojouharov I, Korten W, Kumar S, Kurz N, Lalovic N, Lettmann M, Lizarazo C, Louchart C, Mandal S, Merchán E, Michelagnoli C, Möller T, Moschner K, Patel Z, Pietralla N, Pietri S, Ralet D, Reese M, Regan PH, Reiter P, Schaffner H, Singh P, Stahl C, Stegmann R, Stezowksi O, Taprogge J, Thöle P, Walker PM, Wieland O, Wendt A, Wilson E, Wood R, Wollersheim HJ (2015) Isomeric ratios in <sup>206</sup>Hg, Acta Physica Polonica B 46 (3) pp. 601-605
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-ray tracking array worked properly and that the tracking efficiency was independent of the time relative to the prompt flash.
Agramunt J, Tain JL, Gomez-Hornillos MB, Garcia AR, Albiol E, Algora A, Caballero-Folch R, Calvino E, Cano-Ott D, Cortes G, Domingo-Pardo C, Eronen T, Gelletly W, Gorelov D, Gorlychev V, Hakala H, Jokinen A, Jordan MD, Kankainen A, Kolhinen V, Kucuk L, Martinez T, Mason PJR, Moore I, Penttila H, Podolyak Z, Pretel C, Reponen M, Riego A, Rissanen J, Rubio B, Saastamoinen A, Tarifeno-Saldivia A, Valencia E (2016) Characterization of a neutron-beta counting system with beta-delayed neutron emitters, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 807 pp. 69-78 ELSEVIER SCIENCE BV
Gorska M, Grawe H, Caceres L, Algora A, Boehmer M, Boutachkov P, Eppinger K, Faestermann T, Fujita Y, Gadea A, Garnsworthy A, Gelletly W, Gerl J, Gernhaeuser R, Hinke C, Jungclaus A, Kojouharov I, Kruecken R, Maier L, Molina P, Pfuetzner M, Pietri S, Podolyak Z, Regan PH, Rubio B, Rudolph D, Wollersheim HJ (2009) NUCLEAR STRUCTURE ADDRESSED AT GSI/RISING, INTERNATIONAL JOURNAL OF MODERN PHYSICS E-NUCLEAR PHYSICS 18 (4) pp. 759-766 WORLD SCIENTIFIC PUBL CO PTE LTD
Simpson EC, Tostevin JA, Podolyak Z, Regan PH, Steer SJ (2010) Differential isomeric ratios following two-proton knockout from Pb-208, PHYSICAL REVIEW C 82 (3) ARTN 037602 AMER PHYSICAL SOC
Roberts OJ, Nita CR, Bruce AM, Marginean N, Bucurescu D, Deleanu D, Filipescu D, Florea NM, Gheorghe I, Ghita D, Glodariu T, Lica R, Marginean R, Mihai C, Negret A, Sava T, Stroe L, Suvaila R, Toma S, Alharbi T, Alexander T, Aydin S, Brown BA, Browne F, Carroll RJ, Mulholland K, Podolyak Z, Regan PH, Smith JF, Smolen M, Townsley CM (2016) E3 and M2 transition strengths in Bi-209(83), PHYSICAL REVIEW C 93 (1) ARTN 014309 AMER PHYSICAL SOC
Chen L, Litvinov YA, Plass WR, Beckert K, Beller P, Bosch F, Boutin D, Caceres L, Cakirli RB, Carroll JJ, Casten RF, Chakrawarthy RS, Cullen DM, Cullen IJ, Franzke B, Geissel H, Gerl J, Gorska M, Jones GA, Kishada A, Knoebel R, Kozhuharov C, Litvinov SA, Liu Z, Mandal S, Montes F, Muenzenberg G, Nolden F, Ohtsubo T, Patyk Z, Podolyak Z, Propri R, Rigby S, Saito N, Saito T, Scheidenberger C, Shindo M, Steck M, Ugorowski P, Walker PM, Williams S, Weick H, Winkler M, Wollersheim H-J, Yamaguchi T (2009) Schottky Mass Measurement of the Hg-208 Isotope: Implication for the Proton-Neutron Interaction Strength around Doubly Magic Pb-208, PHYSICAL REVIEW LETTERS 102 (12) ARTN 122503 AMER PHYSICAL SOC
Soederstroem P-A, Regan PH, Walker PM, Watanabe H, Doornenbal P, Korkulu Z, Lee P, Liu HL, Liu JJ, Lorusso G, Nishimura S, Sumikama T, Phong VH, Wu J, Xu FR, Yagi A, Zhang GX, Alharbi T, Baba H, Browne F, Bruce AM, Carroll R, Chae KY, Dombradi Z, Estrade A, Fukuda N, Griffin C, Ideguchi E, Inabe N, Isobe T, Kanaoka H, Kojouharov I, Kondev FG, Kubo T, Kubono S, Kurz N, Kuti I, Lalkovski S, Lane GJ, Lee CS, Lee EJ, Lotay G, Moon C-B, Nishizuka I, Nita CR, Odahara A, Patel Z, Podolyak Z, Roberts OJ, Sakurai H, Schaffner H, Shand CM, Suzuki H, Takeda H, Terashima S, Vajta Z, Valiente-Dobon JJ, Xu ZY, Yoshida S (2015) Heavy Rotation - Evolution of quadrupole collectivity centred at the neutron-rich doubly mid-shell nucleus Dy-170, NUCLEAR STRUCTURE AND DYNAMICS '15 1681 AMER INST PHYSICS
Zakari-Issoufou AA, Porta A, Fallot M, Algora A, Tain JL, Valencia E, Rice S, Agramunt J, Äystö J, Bowry M, Bui VM, Caballero-Folch R, Cano-Ott D, Eloma V, Estévez E, Farrelly GF, Garcia A, Gelletly W, Gomez-Hornillos MB, Gorlychev V, Hakala J, Jokinen A, Jordan MD, Kankainen A, Kondev FG, Martinez T, Mendoza E, Molina F, Moore I, Perez A, Podolyak Z, Penttilä H, Regan PH, Rissanen J, Rubio B, Weber C (2013) Measurement of fission products ² decay properties using a total absorption spectrometer, EPJ Web of Conferences 62
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.
Patel Z, Söderström PA, Podolyák Z, Regan PH, Walker PM, Watanabe H, Ideguchi E, Simpson GS, Liu HL, Nishimura S, Wu Q, Xu FR, Browne F, Doornenbal P, Lorusso G, Rice S, Sinclair L, Sumikama T, Wu J, Xu ZY, Aoi N, Baba H, Bello Garrote FL, Benzoni G, Daido R, Fang Y, Fukuda N, Gey G, Go S, Gottardo A, Inabe N, Isobe T, Kameda D, Kobayashi K, Kobayashi M, Komatsubara T, Kojouharov I, Kubo T, Kurz N, Kuti I, Li Z, Matsushita M, Michimasa S, Moon CB, Nishibata H, Nishizuka I, Odahara A, ^ahin E, Sakurai H, Schaffner H, Suzuki H, Takeda H, Tanaka M, Taprogge J, Vajta Z, Yagi A, Yokoyama R (2014) Isomer decay spectroscopy of Sm 164 and Gd 166: Midshell collectivity around N=100, Physical Review Letters 113 (26)
© 2014 American Physical Society.Excited states in the N=102 isotones Gd166 and Sm164 have been observed following isomeric decay for the first time at RIBF, RIKEN. The half-lives of the isomeric states have been measured to be 950(60) and 600(140) ns for Gd166 and Sm164, respectively. Based on the decay patterns and potential energy surface calculations, including ²6 deformation, a spin and parity of 6- has been assigned to the isomeric states in both nuclei. Collective observables are discussed in light of the systematics of the region, giving insight into nuclear shape evolution. The decrease in the ground-band energies of Gd166 and Sm164 (N=102) compared to Gd164 and Sm162 (N=100), respectively, presents evidence for the predicted deformed shell closure at N=100.
Lenzi SM, Marginean N, Napoli DR, Ur CA, Zuker AP, de Angelis G, Algora A, Axiotis M, Bazzacco D, Belcari N, Bentley MA, Bizzetti PG, Bizzeti-Sona A, Brandolini F, von Brentano P, Bucurescu D, Cameron JA, Chandler C, De Poli M, Dewald A, Eberth H, Farnea E, Gadea A, Garces-Narro J, Gelletly W, Grawe H, Isocrate R, Joss DT, Kalfas CA, Klug T, Lampman T, Lunardi S, Martinez T, Martinez-Pinedo G, Menegazzo R, Nyberg J, Podolyak Z, Poves A, Ribas RV, Alvarez CR, Rubio B, Sanchez-Solano J, Spolaore P, Steinhardt T, Thelen O, Tonev D, Vitturi A, von Oertzen W, Weiszflog M (2001) Coulomb energy differences in T=1 mirror rotational bands in Fe-50 and Cr-50, PHYSICAL REVIEW LETTERS 87 (12) ARTN 122501 AMERICAN PHYSICAL SOC
Taprogge J, Jungclaus A, Grawe H, Nishimura S, Doornenbal P, Lorusso G, Simpson GS, Söderström PA, Sumikama T, Xu ZY, Baba H, Browne F, Fukuda N, Gernhäuser R, Gey G, Inabe N, Isobe T, Jung HS, Kameda D, Kim GD, Kim YK, Kojouharov I, Kubo T, Kurz N, Kwon YK, Li Z, Sakurai H, Schaffner H, Steiger K, Suzuki H, Takeda H, Vajta Z, Watanabe H, Wu J, Yagi A, Yoshinaga K, Benzoni G, Bönig S, Chae KY, Coraggio L, Covello A, Daugas JM, Drouet F, Gadea A, Gargano A, Ilieva S, Kondev FG, Kröll T, Lane GJ, Montaner-Pizá A, Moschner K, Mücher D, Naqvi F, Niikura M, Nishibata H, Odahara A, Orlandi R, Patel Z, Podolyák Z, Wendt A (2014) 1p3/2 proton-hole state in Sn 132 and the shell structure along N=82, Physical Review Letters 112 (13)
A low-lying state in In82131, the one-proton hole nucleus with respect to double magic Sn132, was observed by its ³ decay to the IÀ=1/2- ²-emitting isomer. We identify the new state at an excitation energy of Ex=1353keV, which was populated both in the ² decay of Cd13183 and after ²-delayed neutron emission from Cd13284, as the previously unknown Àp3/2 single-hole state with respect to the Sn132 core. Exploiting this crucial new experimental information, shell-model calculations were performed to study the structure of experimentally inaccessible N=82 isotones below Sn132. The results evidence a surprising absence of proton subshell closures along the chain of N=82 isotones. The consequences of this finding for the evolution of the N=82 shell gap along the r-process path are discussed. © 2014 American Physical Society.
Lenzi SM, Napoli DR, Ur CA, Bazzacco D, Brandolini F, Cameron JA, Caurier E, de Angelis G, De Poli M, Farnea E, Gadea A, Hankonen S, Lunardi S, Martinez-Pinedo G, Podolyak Z, Poves A, Alvarez CR, Sanchez-Solano J, Somacal H (1999) Band termination in the N = Z odd-odd nucleus V-46, PHYSICAL REVIEW C 60 (2) ARTN 021303 AMERICAN PHYSICAL SOC
Reed MW, Walker PM, Cullen IJ, Litvinov YA, Shubina D, Dracoulis GD, Blaum K, Bosch F, Brandau C, Carroll JJ, Cullen DM, Deo AY, Detwiler B, Dimopoulou C, Dong GX, Farinon F, Geissel H, Haettner E, Heil M, Kempley RS, Knöbel R, Kozhuharov C, Kurcewicz J, Kuzminchuk N, Litvinov S, Liu Z, Mao R, Nociforo C, Nolden F, Plaß WR, Podolyak Z, Prochazka A, Scheidenberger C, Steck M, Stöhlker T, Sun B, Swan TPD, Trees G, Weick H, Winckler N, Winkler M, Woods PJ, Xu FR, Yamaguchi T (2012) Long-lived isomers in neutron-rich Z=72 76 nuclides, Physical Review C - Nuclear Physics 86 (5)
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 183,184 ,186Hf, 186,187Ta,186W, 190,192 ,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.
Andgren K, Podolyak Z, Dewald A, Xu FR, Algora A, Axiotis M, Bazzacco D, Bizzeti PG, Bizzeti-Sona AM, Cederwall B, de Angelis G, Farnea E, Fitzler A, Gadea A, Gelletly W, Lunardi S, Moller O, Marginean N, Martinez T, Pissulla T, Rusu C, Ur CA, Venturelli R, Walker PM, Wheldon C (2005) Lifetime measurements of normal deformed states in Lu-165(71), PHYSICAL REVIEW C 71 (1) ARTN 014312 AMER PHYSICAL SOC
Caamãno M, Walker PM, Regan PH, Pearson CJ, Podolyak ZS, Mayet P, Gerl J, Schlegel C, Hellström M, Mlneva M, Pfützner M (2001) Isomeric decays in200Pt, Acta Physica Polonica B 32 (3) pp. 763-766
A projectile fragmentation experiment has been performed to populate the neutron-rich A
Fahlander C, de Angelis G, Bazzacco D, Beghini S, Brandolini F, Cline D, Corradi L, De Poli M, Farnea E, Gadea A, Hartlein T, Lunardi S, Montagnoli G, Napoli DR, Petrache CM, Podolyak Z, Alvarez CR, Scarlassara F, Stefanini AM, Wu CY (1998) Fragmentation of the two-phonon gamma-vibration in Er-166, ACTA PHYSICA HUNGARICA NEW SERIES-HEAVY ION PHYSICS 7 (1) pp. 109-110 AKADEMIAI KIADO
Mineva AN, Hellstrom M, Bernas M, Gerl J, Grawe H, Pfutzner M, Regan PH, Rejmund M, Rudolph D, Becker F, Bingham CR, Enqvist T, Fogelberg B, Gausemel H, Geissel H, Genevey J, Gorska M, Grzywacz R, Hauschild K, Janas Z, Kojouharov I, Kopatch Y, Korgul A, Korten W, Kurcewicz J, Lewitowicz M, Lucas R, Mach H, Mandal S, Mayet P, Mazzocchi C, Pinston JA, Podolyak Z, Schaffner H, Schlegel C, Schmidt K, Summerer K, Wollersheim HJ (2001) A new mu s isomer in Sb-136 produced in the projectile fission of U-238, EUROPEAN PHYSICAL JOURNAL A 11 (1) pp. 9-13 SPRINGER-VERLAG
Grodner E, Gadea A, Sarriguren P, Lenzi SM, Grebosz J, Valiente-Dobón JJ, Algora A, Górska M, Regan PH, Rudolph D, de Angelis G, Agramunt J, Alkhomashi N, Amon Susam L, Bazzacco D, Benlliure J, Benzoni G, Boutachkov P, Bracco A, Caceres L, Cakirli RB, Crespi FC, Domingo-Pardo C, Doncel M, Dombrádi Z, Doornenbal P, Farnea E, Ganio?lu E, Gelletly W, Gerl J, Gottardo A, Hüyük T, Kurz N, Leoni S, Mengoni D, Molina F, Morales AI, Orlandi R, Oktem Y, Page RD, Perez D, Pietri S, Podolyák Z, Poves A, Quintana B, Rinta-Antila S, Rubio B, Nara Singh BS, Steer AN, Verma S, Wadsworth R, Wieland O, Wollersheim HJ (2014) Hindered Gamow-Teller decay to the odd-odd N=Z (62)Ga: absence of proton-neutron T=0 condensate in A=62., Phys Rev Lett 113 (9)
Search for a new kind of superfluidity built on collective proton-neutron pairs with aligned spin is performed studying the Gamow-Teller decay of the T=1, J(À)=0+ ground state of (62)Ge into excited states of the odd-odd N=Z nucleus (62)Ga. The experiment is performed at GSI Helmholtzzentrum für Shwerionenforshung with the (62)Ge ions selected by the fragment separator and implanted in a stack of Si-strip detectors, surrounded by the RISING Ge array. A half-life of T1/2=82.9(14) ms is measured for the (62)Ge ground state. Six excited states of (62)Ga, populated below 2.5 MeV through Gamow-Teller transitions, are identified. Individual Gamow-Teller transition strengths agree well with theoretical predictions of the interacting shell model and the quasiparticle random phase approximation. The absence of any sizable low-lying Gamow-Teller strength in the reported beta-decay experiment supports the hypothesis of a negligible role of coherent T=0 proton-neutron correlations in (62)Ga.
Sohler D, Podolyak Z, Dombradi Z, Gulyas J, Algora A, Brant S, Krstic V, Paar V (1999) Further evidence on shape coexistence in As-72, PHYSICAL REVIEW C 59 (3) pp. 1328-1333 AMERICAN PHYSICAL SOC
Bucurescu D, Marginean N, Alvarez CR, Sun Y, Ur CA, Mihailescu LC, Suliman G, Bazzacco D, Lunardi S, de Angelis G, Axiotis M, Farnea E, Gadea A, Ionescu-Bujor M, Iordachescu A, Krolas W, Kroll T, Lenzi SM, Martinez T, Menegazzo R, Napoli DR, Pavan P, Podolyak Z, Rusu C, De Poli M, Quintana B, Spolaore P (2004) High-spin states in Ru-90 and the projected shell model description, PHYSICAL REVIEW C 69 (6) ARTN 064319 AMER PHYSICAL SOC
Myalski S, Kmiecik M, Maj A, Regan PH, Garnsworthy AB, Pietri S, Rudolph D, Podolyak Z, Steer SJ, Becker F, Bednarczyk P, Gerl J, Gorska M, Grawe H, Kojouharov I, Schaffner H, Wollersheim HJ, Prokopowicz W, Grebosz J, Benzoni G, Blank B, Brandau C, Bruce AM, Caceres L, Camera F, Catford WN, Cullen IJ, Dombradi Z, Doornenbal P, Estevez E, Geissel H, Gelletly W, Heinz A, Hoischen R, Ilie G, Jones GA, Jungclaus A, Kelic A, Kondev FG, Kurtukian-Nieto T, Kurz N, Lalkovski S, Liu Z, Montes F, Pfuetzner M, Saito T, Shizuma T, Simons AJ, Schwertel S, Tachenov S, Walker PM, Werner-Malento E, Wieland O (2007) Isomeric ratio for the I-pi=8(+) yrast state in Pd-96 produced in the relativistic fragmentation of Ag-107, ACTA PHYSICA POLONICA B 38 (4) pp. 1277-1282 ACTA PHYSICA POLONICA B, JAGELLONIAN UNIV, INST PHYSICS
Jolie J, Régis JM, Wilmsen D, Saed-Samii N, Pfeiffer M, Warr N, Blanc A, Jentschel M, Köster U, Mutti P, Soldner T, Simpson GS, De France G, Urban W, Drouet F, Vancraeyenest A, Bruce AM, Roberts OJ, Fraile LM, Paziy V, Ignatov A, Kröll T, Ivanova D, Kisyov S, Lalkovski S, Podolyak Z, Regan PH, Wilson E, Korten W, Ur CA, Lica R, Marginean N (2015) Test of the SO(6) selection rule in 196Pt using cold-neutron capture, Nuclear Physics A 934 pp. 1-7
© 2014 Elsevier B.V.At the PF1B cold-neutron beam line of the Institut Laue Langevin, the EXILL&FATIMA array, consisting of EXOGAM Ge detectors and fast LaBr3(Ce) scintillators, was used to perform fast electronic timing measurements after the 195Pt(n,³) reaction using a highly collimated cold-neutron beam. An upper lifetime limit was obtained for the third 0+ state in 196Pt. As this state is the lowest state of the Ã=N-2 set of SO(6) states, the selection rule which forbids E2 transitions to the lower lying Ã=N could be tested.
Podolyak Z, Caamano M, Regan PH, Walker PM, Mayet P, Gerl J, Schlegel C, Hellstrom M, Mineva M, Pfutzner M (2002) Isomeric decays in neutron-rich W, Os and Pt nuclei, PROGRESS OF THEORETICAL PHYSICS SUPPLEMENT (146) pp. 467-472 PROGRESS THEORETICAL PHYSICS PUBLICATION OFFICE
Garnsworthy AB, Regan PH, Pietri S, Rudolph D, Caceres L, Gorska M, Podolyak Z, Steer SJ, Heinz A, Becker F, Bednarczyk P, Doornenbal P, Geissel H, Gerl J, Grawe H, Grebosz J, Kelic A, Kojouharov I, Kurz N, Montes F, Prokopwicz W, Saito T, Schaffner H, Tachenov S, Werner-Malento E, Wollersheim HJ, Benzoni G, Blank B, Brandau C, Bruce AM, Camera F, Catford WN, Cullen IJ, Dombradi Z, Estevez E, Gelletly W, Hoischen R, Ilie G, Jolie J, Jones GA, Jungclaus A, Kmiecik M, Kondev FG, Kurtukian-Nieto T, Lalkovski S, Liu Z, Maj A, Myalski S, Pfutzner M, Shizuma T, Simons AJ, Schwertel S, Walker PM, Wieland O (2007) Isomeric states in the light Tc isotopes, ACTA PHYSICA POLONICA B 38 (4) pp. 1265-1269 ACTA PHYSICA POLONICA B, JAGELLONIAN UNIV, INST PHYSICS
Swan TPD, Walker PM, Podolyak Z, Reed MW, Dracoulis GD, Lane GJ, Kibedi T, Smith ML (2012) Discovery of isomers in dysprosium, holmium, and erbium isotopes with N=94 to 97, PHYSICAL REVIEW C 85 (2) ARTN 024313
Nociforo C, Farinon F, Bosch F, Boutin D, Geissel H, Knöbel R, Kojouharov I, Kozhuharov C, Kurcewicz J, Litvinov YA, Nolden F, Pietri S, Prochazka A, Sanjari MS, Scheidenberger C, Weick H, Winfield JS, Winkler M, Wollersheim HJ, Farinon F, Geissel H, Prochazka A, Scheidenberger C, Sun B, Musumarra A, Del Zoppo A, Figuera P, Fisichella M, Pellegriti MG, Scuderi V, Torresi D, Musumarra A, Kuboki T, Suzuki T, Yamaguchi T, Mazzocco M, Winckler N, Motizuki Y, Ohstubo T, Ohkuma Y, Patyk Z, Podolyak Z (2012) Measurements of ±-decay half-lives at GSI, 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 ±-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.
Nishimura S, Li Z, Watanabe H, Yoshinaga K, Sumikama T, Tachibana T, Yamaguchi K, Kurata-Nishimura M, Lorusso G, Miyashita Y, Odahara A, Baba H, Berryman JS, Blasi N, Bracco A, Camera F, Chiba J, Doornenbal P, Go S, Hashimoto T, Hayakawa S, Hinke C, Ideguchi E, Isobe T, Ito Y, Jenkins DG, Kawada Y, Kobayashi N, Kondo Y, Krücken R, Kubono S, Nakano T, Ong HJ, Ota S, Podolyák Z, Sakurai H, Scheit H, Steiger K, Steppenbeck D, Sugimoto K, Takano S, Takashima A, Tajiri K, Teranishi T, Wakabayashi Y, Walker PM, Wieland O, Yamaguchi H (2011) ²-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, Physical Review Letters 106 (5) 052502 pp. --- American Physical Society
The ²-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 AH110 region. A revised model based on the second generation gross theory of ² 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.
Calinescu S, Cáceres L, Grévy S, Sohler D, Stanoiu M, Negoita F, Borcea C, Borcea R, Bowry M, Catford W, Dombradi Z, Franchoo S, Gillibert R, Thomas JC, Kuti I, Lukyanov S, Lepailleur A, Mrazek J, Niikura M, Podolyak Z, Petrone C, Penionzhkevich Y, Roger T, Rotaru F, Sorlin O, Stefan I, Vajta Z, Wilson E (2013) Study of the neutron rich sulfure isotope 43S through intermediate energy Coulomb excitation, Journal of Physics: Conference Series 413 (1)
The reduced transition probability B(E2: 3/2-’7/2 -2) has been measured in 43S using Coulomb excitation at intermediate energy. The nucleus of interest was produced by fragmentation of a 48Ca beam at GANIL. The reaction products were separated in the LISE spectrometer. After Coulomb-excitation of 43S in a 208Pb target, the ³ rays emitted inflight were detected by 64 BaF2 detectors of the Chteau de Cristal array. The preliminary value deduced for the reduced transition probability B(E2: 3/2 -’7/2-2) is in agreement with the predictions of the shell model calculations and supports a prolate-spherical shape coexistence in the 43S nucleus.
Brandau C, Boutin D, Geissel H, Gerl J, Gorska M, Manikonda S, Muenzenberg G, Podolyak Z, Scheidenberger C, Weick H, Winkler M, Yavor M (2007) Status of the energy-buncher in the low-energy branch of the Super-FRS, EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS 150 pp. 225-226 EDP SCIENCES S A
Stevenson PD, Brine MP, Podolyak Z, Regan PH, Walker PM, Stone JR (2005) Shape evolution in the neutron-rich tungsten region, PHYSICAL REVIEW C 72 (4) ARTN 047303 AMERICAN PHYSICAL SOC
Modamio V, Valiente-Dobón JJ, Lunardi S, Lenzi SM, Gadea A, Mengoni D, Bazzacco D, Algora A, Bednarczyk P, Benzoni G, Birkenbach B, Bracco A, Bruyneel B, Bürger A, Chavas J, Corradi L, Crespi FCL, De Angelis G, Désesquelles P, De France G, Depalo R, Dewald A, Doncel M, Erduran MN, Farnea E, Fioretto E, Fransen C, Geibel K, Gottardo A, Görgen A, Habermann T, Hackstein M, Hess H, Hüyük T, John PR, Jolie J, Judson D, Jungclaus A, Karkour N, Kempley R, Leoni S, Melon B, Menegazzo R, Michelagnoli C, Mijatovi? T, Million B, Möller O, Montagnoli G, Montanari D, Nannini A, Napoli DR, Podolyak Z, Pollarolo G, Pullia A, Quintana B, Recchia F, Reiter P, Rosso D, Rother W, Sahin E, Salsac MD, Scarlassara F, Sieja K, Söderström PA, Stefanini AM, Stezowski O, Szilner S, Theisen C, Travers B, Ur CA (2013) Lifetime measurements in neutron-rich 63,65Co isotopes using the AGATA demonstrator, Physical Review C - Nuclear Physics 88 (4)
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 ³-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. © 2013 American Physical Society.
Najem MA, Spyrou NM, Podolyák Z, Abolaban FA (2013) The physical characteristics of the 15 MV Varian Clinac 2100C unflattened beam, Radiation Physics and Chemistry
A 15 MV photon beam of a Varian Clinac 2100C medical linear accelerator operating with and without a flattening filter was simulated using the Monte Carlo code 'FLUKA' in order to calculate differences in their dosimetric properties. These include: the dose rate, the percentage depth dose on the central axis, the beam profile, the out-of-field dose, the surface dose on a 40×40×40 cm water phantom and the neutron contamination. The results obtained showed that the unflattened beam has a dose rate 4.86 times higher than the flattened one. The average out-of-field dose from the edge of the field to the edge of the phantom was reduced by 44%, the neutron fluence at the isocentre was reduced by 77% and the surface neutron dose-equivalent was reduced from 2.11±0.05 to 0.40±0.01 mSv(n) Gy(X) after normalising both beams to give the same dose at d (the depth of maximum dose). However, the photon surface dose of the unflattened beam increased by 13%. From this information, it can be concluded that the unflattened beam can lead to better treatment outcome and may reduce the beam-on time which may be required for specific cases. © 2013 Elsevier Ltd.
Mohammadi S, De Angelis G, Axiotis M, Bazzacco D, Bizzeti PG, Brandolini F, Broda R, Bucurescu D, Farnea E, Gelletly W, Gadea A, Ionescu-Bujor M, Iordachescu A, Kroll T, Longdown S, Lunardi S, Marginean N, Martinez T, Medina N, Podolyak Z, Quintana B, Regan PH, Rubio B, Ur CA, Dobon J-JV, Walker PM, Zhang YH (2006) Yrast states in Os-188,Os-190 nuclei, INTERNATIONAL JOURNAL OF MODERN PHYSICS E-NUCLEAR PHYSICS 15 (8) pp. 1797-1802 WORLD SCIENTIFIC PUBL CO PTE LTD
John PR, Modamio V, Valiente-Dobón JJ, Mengoni D, Lunardi S, Rodríguez TR, Bazzacco D, Gadea A, Wheldon C, Alexander T, De Angelis G, Ashwood N, Barr M, Benzoni G, Birkenbach B, Bizzeti PG, Bizzeti-Sona AM, Bottoni S, Bowry M, Bracco A, Browne F, Bunce M, Camera F, Cederwall B, Corradi L, Crespi FCL, Désesquelles P, Eberth J, Farnea E, Fioretto E, Görgen A, Gottardo A, Grebosz J, Grente L, Hess H, Jungclaus A, Kokalova T, Korichi A, Korten W, Ku_oçlu A, Lenzi S, Leoni S, Ljungvall J, Maron G, Meczynski W, Melon B, Menegazzo R, Michelagnoli C, Mijatovi? T, Million B, Molini P, Montagnoli G, Montanari D, Napoli DR, Nolan P, Oziol C, Podolyák Z, Pollarolo G, Pullia A, Quintana B, Recchia F, Reiter P, Roberts OJ, Rosso D, ^ahin E, Salsac MD, Scarlassara F, Sferrazza M, Simpson J, Söderström PA, Stefanini AM, Stezowski O, Szilner S, Theisen C, Ur CA (2014) Shape evolution in the neutron-rich osmium isotopes: Prompt ³-ray spectroscopy of Os 196, Physical Review C - Nuclear Physics 90 (2)
The shape transition in the neutron-rich Os isotopes is studied by investigating the neutron-rich 196Os nucleus through in-beam ³-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 ³ 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 ³-unstable/triaxial rotor yrast band is predicted for 196Os which is in agreement with the experimentally measured excited states. © 2014 American Physical Society.
Hoischen R, Rudolph D, Ma HL, Montuenga P, Hellstrom M, Pietri S, Podolyak Z, Regan PH, Garnsworthy AB, Steer SJ, Becker F, Bednarczyk P, Caceres L, Doornenbal P, Gerl J, Gorska M, Grebosz J, Kojouharov I, Kurz N, Prokopowicz W, Schaffner H, Wollersheim HJ, Andersson L-L, Atanasova L, Balabanski DL, Bentley MA, Blazhev A, Brandau C, Brown JR, Fahlander C, Johansson EK, Jungclaus A (2011) Isomeric mirror states as probes for effective charges in the lower pf shell, JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS 38 (3) ARTN 035104 IOP PUBLISHING LTD
Bucurescu D, Alvarez CR, Ur CA, Marginean N, Spolaore P, Bazzacco D, Lunardi S, Napoli DR, IonescuBujor M, Iordachescu A, Petrache CM, deAngelis G, Gadea A, Foltescu D, Brandolini F, Falconi G, Farnea E, Lenzi SM, Medina NH, Podolyak Z, DePoli M, Rao MN, Venturelli R (1997) Evolution of collectivity along the N=Z line: The Mo-84 nucleus, PHYSICAL REVIEW C 56 (5) pp. 2497-2501 AMERICAN PHYSICAL SOC
Guastalla G, Dijulio DD, Górska M, Cederkäll J, Boutachkov P, Golubev P, Pietri S, Grawe H, Nowacki F, Algora A, Ameil F, Arici T, Atac A, Bentley MA, Blazhev A, Bloor D, Brambilla S, Braun N, Camera F, Pardo CD, Estrade A, Farinon F, Gerl J, Goel N, Grbosz J, Habermann T, Hoischen R, Jansson K, Jolie J, Jungclaus A, Kojouharov I, Knoebel R, Kumar R, Kurcewicz J, Kurz N, Lalovi? N, Merchan E, Moschner K, Naqvi F, Singh BSN, Nyberg J, Nociforo C, Obertelli A, Pfützner M, Pietralla N, Podolyák Z, Prochazka A, Ralet D, Reiter P, Rudolph D, Schaffner H, Schirru F, Scruton L, Swaleh T, Taprogge J, Wadsworth R, Warr N, Weick H, Wendt A, Wieland O, Winfield JS, Wollersheim HJ (2014) Analysis and results of the 104Sn Coulomb excitation experiment, Journal of Physics: Conference Series 533 (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 ³-ray energy spectra and identify the ³-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.
Molina F, Rubio B, Fujita Y, Gelletly W, Agramunt J, Algora A, Benlliure J, Boutachkov P, Caceres L, Cakirli RB, Casarejos E, Domingo-Pardo C, Doornenbal P, Gadea A, Ganioglu E, Gascon M, Geissel H, Gerl J, Gorska M, Grebosz J, Hoischen R, Kumar R, Kurz N, Kojouharov I, Susam LA, Matsubara H, Morales AI, Oktem Y, Pauwels D, Perez-Loureiro D, Pietri S, Podolyak Z, Prokopowicz W, Rudolph D, Schaffner H, Steer SJ, Tain JL, Tamii A, Tashenov S, Valiente-Dobon JJ, Verma S, Wollersheim H-J (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, PHYSICAL REVIEW C 91 (1) ARTN 014301 AMER PHYSICAL SOC
Myalski S, Maj A, Podolyak Z, Becker F, Bednarczyk P, Benzoni G, Blank B, Brandau C, Bruce AM, Caceres L, Camera F, Catford WN, Cullen IJ, Dombradi Z, Doornenbal P, Estevez E, Garnsworthy AB, Geissel H, Gelletly W, Gerl J, Corska M, Grawe H, Grebosz J, Heinz A, Hoischen R, Ilie G, Jones GA, Jungclaus A, Kelic A, Kmiecik M, Kojouharov I, Kondev FG, Kurtukian-Nieto T, Kurz N, Lalkovski S, Liu Z, Montes F, Pfuetzner M, Pietri S, Prokopowicz W, Regan PH, Rudolph D, Saito T, Schaffner H, Schwertel S, Shizuma T, Simon AJ, Steer SJ, Tashenov S, Walker PM, Werner-Malento E, Wieland O, Wollersheim HJ (2009) ISOMERIC RATIOS FOR NUCLEI WITH Z=62-67 AND A=142-152 PRODUCED IN THE RELATIVISTIC FRAGMENTATION OF Pb-208, ACTA PHYSICA POLONICA B 40 (3) pp. 879-883 WYDAWNICTWO UNIWERSYTETU JAGIELLONSKIEGO
Kempley RS, Podolyak Z, Bazzacco D, Gadea A, Farnea E, Valiente-Dobon JJ, Mengoni D, Recchia F, Sahin E, Gottardo A, Corradi L, Fioretto E, Szilner S, Anagnostatou V, Al-Dahan N, De Angelis G, Bellato M, Berti B, Bortolato D, Bowry M, Bunce M, Cocconi P, Colombo A, Dombradi Z, Fanin C, Gelletly W, Isocrate R, Ketenci S, Kondratyev N, Kuti I, Mason PJR, Michelagnoli C, Mijatovic T, Molini P, Montagnioli G, Montanari D, Nakhostin M, Napoli DR, Pellegrini D, Regan PH, Rampazzo G, Reiter P, Rosso D, Scarlassara F, Stefanini A, Singh P, Toniolo N, Ur CA (2011) CROSS-COINCIDENCES IN THE Xe-136+Pb-208 DEEP-INELASTIC REACTION, ACTA PHYSICA POLONICA B 42 (3-4) pp. 717-720 WYDAWNICTWO UNIWERSYTETU JAGIELLONSKIEGO
Gottardo A, Valiente-Dobón JJ, de Angelis G, Modamio V, Napoli DR, Sahin E, Lunardi S, John PR, Lenzi SM, Benzoni G, Bracco A, Camera F, Crespi FCL, Corsi A, Leoni S, Million B, Morales AI, Nicolini R, Wieland O, Gadea A, Algora A, Bazzacco D, Farnea E, Menegazzo R, Mengoni D, Recchia F, Ur CA, Boutachkov P, Górska M, Pietri S, Weick H, Cortes ML, Domingo-Pardo C, Engert T, Farinon F, Geissel H, Gerl J, Goel N, Gregor E, Habermann T, Hoischen R, Kojouharov I, Kurz N, Naqvi F, Nociforo C, Prochazka A, Prokopowicz W, Schaffner H, Sharma A, Wollersheim H-J, Bruce AM, Bunce M, Denis Bacelar AM, Grebosz J, Podolyák Z, Regan PH, Al-Dahan N, Bowry M, Deo AY, Farrelly GF, Reed MW, Swan TPD, Walker PM, Pfützner M, Alcántara Núñez J, Ayyad Y, Benlliure J, Alkhomashi N, Allegro PRP, Ribas RV, Casarejos E, Doncel M, Dombradi Z, Eppinger K, Klupp S, Steiger K, Rudolph D, Janik R, Sitar B, Strmen P, Szarka I, Mandal S, Siwal D (2013) New ¼s isomers in the neutron-rich Hg nucleus, Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
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 ½ g 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. All rights reserved.
Podolyak Z, Regan PH, Walker PM, Caamano M, Gladnishki K, Gerl J, Hellstrom M, Mayet P, Pfutzner M, Mineva M (2003) Heavy nuclei studied in projectile fragmentation, NUCLEAR PHYSICS A 722 pp. 273C-278C ELSEVIER SCIENCE BV
Browne F, Bruce AM, Sumikama T, Nishizuka I, Nishimura S, Doornenbal P, Lorusso G, Soederstroem P-A, Watanabe H, Daido R, Patel Z, Rice S, Sinclair L, Wu J, Xu ZY, Yagi A, Baba H, Chiga N, Carroll R, Didierjean F, Fang Y, Fukuda N, Gey G, Ideguchi E, Inabe N, Isobe T, Kameda D, Kojouharov I, Kurz N, Kubo T, Lalkovski S, Li Z, Lozeva R, Nishibata H, Odahara A, Podolyak Z, Regan PH, Roberts OJ, Sakurai H, Schaffner H, Simpson GS, Suzuki H, Takeda H, Tanaka M, Taprogge J, Werner V, Wieland O (2015) Lifetime measurements of the first 2(+) states in Zr-104,Zr-106: Evolution of ground-state deformations, PHYSICS LETTERS B 750 pp. 448-452 ELSEVIER SCIENCE BV
Podolyak Z, Shand CM, Lalovic, N, Gerl J, Rudolph D, Alexander T, Boutachkov P, Cortes ML, Gorska M, Kojouharov I, Kurz N, Louchart C, Merchan E, Michelagnoli C, Perez-Vidal RM, Pietri S, Ralet D, Reese M, Schaffner H, Stahl C, Weick H, Ameil F, de Angelis G, Arici T, Carroll R, Dombradi Z, Gadea A, Golubev P, Lettmann M, Lizarazo C, Birkenbach B, Bruyneel B, Burrows I, Charles L, Clement E, Crespi FCL, Cullen DM, Desesquelles P, Eberth J, Gonzalez V, Habermann T, Harkness-Brennan L, Hess H, Judson DS, Jungclaus A, Korten W, Labiche M, Maj A, Mengoni D, Napoli DR, Pullia A, Quintana B, Rainovski G, Reiter P, Salsac MD, Sanchis E, Valiente Dobon JJ (2016) Role of the ” Resonance in the Population of a Four-Nucleon State in the Fe56’Fe54 Reaction at Relativistic Energies, Physical Review Letters 117 (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 ³-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 ”0 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.
Alkhomashi N, Regan PH, Podolyak Z, Pietri S, Garnsworthy AB, Steer SJ, Benlliure J, Caserejos E, Casten RF, Gerl J, Wollersheim HJ, Grebosz J, Farrelly G, Gorska M, Kojouharov I, Schaffner H, Algora A, Benzoni G, Blazhev A, Boutachkov P, Bruce AM, Bacelar AMD, Cullen IJ, Caceres L, Doornenbal P, Estevez ME, Fujita Y, Gelletly W, Hoischen R, Kumar R, Kurz N, Lalkovski S, Liu Z, Mihai C, Molina F, Morales AI, Muecher D, Prokopowicz W, Rubio B, Shi Y, Tamii A, Tashenov S, Valiente-Dobon JJ, Walker PM, Woods PJ, Xu FR (2009) beta(-)-delayed spectroscopy of neutron-rich tantalum nuclei: Shape evolution in neutron-rich tungsten isotopes, PHYSICAL REVIEW C 80 (6) ARTN 064308 AMER PHYSICAL SOC
Wilson E, Podolyák Z, Fornal B, Janssens RVF, Bowry M, Bunce M, Carpenter MP, Chiara CJ, Cieplicka N, Deo AY, Dracoulis GD, Grawe H, Hoffman CR, Kempley RS, Kondev FG, Lane GJ, Lauritsen T, Reed MW, Regan PH, Rodríguez Triguero C, Szpak B, Walker PM, Zhu S (2014) Study of 207Tl126 produced in deep-inelastic reactions, EPJ Web of Conferences 66
Deep-inelastic collisions of a 208Pb beam on a 208Pb target were performed using the ATLAS accelerator at Argonne National Laboratory. The Gammasphere detector array was used for the detection of prompt and delayed gamma-rays of the reaction products.207Tl is one proton away from the 208Pb doubly-magic nucleus. Its low-energy level structure is dominated by the single proton-hole states Às1/2-1, Àd3/2-1 and Àh11/2-1. The 11/2- state is isomeric with T1/2 = 1.33(11) s. The reaction partner of 207Tl is 209Bi, which has arelatively well established level scheme compared to 207Tl. Cross-coincidences between these two nuclei were used to confirm or establish levels above the 11/2- isomeric state in 207Tl. These states are obtained via breaking of the neutron core. Angular correlation analysis was performed on known transitions in 208Pb, proving the applicability of this method for multipolarity assignment. © Owned by the authors, published by EDP Sciences, 2014.
Lalkovski S, Bruce AM, Bacelar AMD, Gorska M, Pietri S, Podolyak Z, Bednarczyk P, Caceres L, Casarejos E, Cullen IJ, Doornenbal P, Farrelly GF, Garnsworthy AB, Geissel H, Gelletly W, Gerl J, Grebosz J, Hinke C, Ilie G, Ivanova D, Jaworski G, Kisyov S, Kojouharov I, Kurz N, Minkov N, Myalski S, Palacz M, Petkov P, Prokopowicz W, Regan PH, Schaffner H, Steer S, Tashenov S, Walker PM, Wollersheim HJ (2013) Submicrosecond isomer in Rh-117(45)72 and the role of triaxiality in its electromagnetic decay rate, PHYSICAL REVIEW C 88 (2) ARTN 024302 AMER PHYSICAL SOC
Simpson EC, Tostevin JA, Podolyak Z, Regan PH, Steer SJ (2009) Population of low-seniority isomeric states of Hg-206 by two-proton knockout reactions at relativistic energies, PHYSICAL REVIEW C 80 (6) ARTN 064608 AMER PHYSICAL SOC
Izotova O, Rudolph D, Ekman J, Fahlander C, Algora A, Andreoiu C, Cardona R, Chandler C, de Angelis G, Farnea E, Gadea A, Narro JG, Nyberg J, Palacz M, Podolyak Z, Steinhardt T, Thelen O (2004) Survey of E1 transitions in the mass A similar to 60 region, PHYSICAL REVIEW C 69 (3) ARTN 037303 AMERICAN PHYSICAL SOC
Bowry M, Podolyak Z, Kurcewicz J, Pietri S, Bunce M, Regan PH, Farinon F, Geissel H, Nociforo C, Prochazka A, Weick H, Allegro P, Benlliure J, Benzoni G, Boutachkov P, Gerl J, Gorska M, Gottardo A, Gregor N, Janik R, Knoebel R, Kojouharov I, Kubo T, Litvinov YA, Merchan E, Mukha I, Naqvi F, Pfeiffer B, Pfuetzner M, Plass W, Pomorski M, Riese B, Ricciardi MV, Schmidt K-H, Schaffner H, Kurz N, Bacelar AMD, Bruce AM, Farrelly GF, Alkhomashi N, Al-Dahan N, Scheidenberger C, Sitar B, Spiller P, Stadlmann J, Strmen P, Sun B, Takeda H, Tanihata I, Terashima S, Dobon JJV, Winfield JS, Wollersheim H-J, Woods PJ (2012) Half-life Measurements of Isomeric States Populated in Projectile Fragmentation, NUCLEAR STRUCTURE AND DYNAMICS '12 1491 pp. 317-320 AMER INST PHYSICS
Chen L, Plass WR, Geissel H, Knoebel R, Kozhuharov C, Litvinov YA, Patyk Z, Scheidenberger C, Siegien-Iwaniuk K, Sun B, Weick H, Beckert K, Beller P, Bosch F, Boutin D, Caceres L, Carroll JJ, Cullen DM, Cullen IJ, Franzke B, Gerl J, Gorska M, Jones GA, Kishada A, Kurcewicz J, Litvinov SA, Liu Z, Mandal S, Montes F, Muenzenberg G, Nolden F, Ohtsubo T, Podolyak Z, Propri R, Rigby S, Saito N, Saito T, Shindo M, Steck M, Ugorowski P, Walker PM, Williams S, Winkler M, Wollersheim H-J, Yamaguchi T (2010) Discovery and investigation of heavy neutron-rich isotopes with time-resolved Schottky spectrometry in the element range from thallium to actinium, PHYSICS LETTERS B 691 (5) pp. 234-237 ELSEVIER SCIENCE BV
Bucurescu D, Rusu C, Marginean N, Ur CA, de Angelis G, Corradi L, Bazzacco D, Beghini S, Della Vedova F, Duchene G, Farnea E, Faul T, Fioretto E, Gadea A, Gelletly W, Guiot B, Ionescu-Bujor M, Iordachescu A, Landown SD, Lenzi SM, Lunardi S, Mason P, Mihai C, Marginean R, Menegazzo R, Montagnoli G, Napoli D, Podolyak Z, Regan PH, Scarlassara F, Stefanini AM, Suliman G, Szilner S, Trotta M, Valiente-Dobon JJ, Zhang YH (2007) gamma-ray spectroscopy of the neutron-rich nuclei (89)Rb, (92)Y, and (93)Y with multinucleon transfer reactions, PHYSICAL REVIEW C 76 (6) ARTN 064301 AMER PHYSICAL SOC
Abuelhia E, Alzimami K, Alkhorayef M, Podolyak Z, Spyrou NM (2008) Measurement of coincidence timing resolution of scintillation detectors compared to semiconductor detectors to image three-photon positron annihilation, JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY 278 (3) pp. 767-771 SPRINGER
Goerska M, Banu A, Bednarczyk P, Bracco A, Buerger A, Camera F, Caurier E, Doornenbal P, Gerl J, Grawe H, Honma M, Huebel H, Jungclaus A, Maj A, Neyens G, Nowacki F, Otsuka T, Pfutzner T, Pietri S, Podolyak Z, Poves A, Regan PH, Reiter P, Rudolph D, Wollersheim HJ (2007) Nuclear structure far off stability - Rising campaigns, ACTA PHYSICA POLONICA B 38 (4) pp. 1219-1228 ACTA PHYSICA POLONICA B, JAGELLONIAN UNIV, INST PHYSICS
Alkhomashi N, Regan PH, Podolyák Z, Pietri S, Garnsworthy AB, Steer SJ, Benlliure J, Caserejos E, Casten RF, Gerl J, Wollersheim HJ, Grebosz J, Farrelly G, Górska M, Kojouharov I, Schaffner H, Algora A, Benzoni G, Blazhev A, Boutachkov P, Bruce AM, Bacelar AMD, Cullen IJ, Cáceres L, Doornenbal P, Estevez ME, Fujita Y, Gelletly W, Hoischen R, Kumar R, Kurz N, Lalkovski S, Liu Z, Mihai C, Molina F, Morales AI, Mücher D, Prokopowicz W, Rubio B, Shi Y, Tamii A, Tashenov S, Valiente-Dobón JJ, Walker PM, Woods PJ, Xu FR (2009) ² - Dcopy of neutron-rich tantalum nuclei: Shape evolution in neutron-rich tungsten isotopes, Physical Review C - Nuclear Physics 80 (6) 064308 pp. 1-12
Kmiecik M, Maj A, Gerl J, Neyens G, Atanasova L, Balabanski DL, Becker F, Bednarczyk P, Benzoni G, Blasi N, Bracco A, Brambilla S, Caceres L, Camera F, Ciemala M, Crespi FCL, Chamoli SK, Chmel S, Daugas JM, Detistov P, Doornenbal P, Georgiev G, Gladnishki K, Gorska M, Grawe H, Grebosz J, Hass M, Hoischen R, Ilie G, Ionescu-Bujor M, Jolie J, Kojuharov I, Krasznahorkay A, Kulessa R, Lach M, Lakshmi S, Leoni S, Lo Bianco G, Lozeva R, Maier KH, Mallion S, Mazurek K, Meczynski W, Million B, Montanari D, Myalski S, Petrache C, Pfuetzner M, Pietri S, Podolyak Z, Prokopowicz W, Rudolph D, Saito N, Saito TR, Saltarelli A, Simpson GS, Styczen J, Vermeulen N, Werner-Malento E, Wieland O, Wollersheim HJ, Zieblinski M (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, EUROPEAN PHYSICAL JOURNAL A 45 (2) pp. 153-158 SPRINGER
Belcari N, de Angelis G, Eberth J, Skoda S, Wyss R, Farnea E, Gadea A, Algora A, De Poli M, Fioretto E, Martinez T, Napoli DR, Prete G, Spolaore P, Bazzacco D, Brandolini F, Buscemi A, Isocrate R, Lenzi S, Lunardi S, Menegazzo R, Petrache CM, Pavan P, Alvarez CR, Podolyak Z, Bizzeti PG, Bizzeti-Sona AM (1999) Absence of blocking effect in the N = Z odd-odd nucleus Ga-62: a new signature of the n-p pairing?, EXPERIMENTAL NUCLEAR PHYSICS IN EUROPE 495 pp. 193-194 AMER INST PHYSICS
Regan PH, Valiente-Dobon JJ, Wheldon C, Wu CY, Smith JF, Macchiavelli AO, Cline D, Chakrawarthy RS, Chapman R, Cromaz M, Fallon P, Freeman SJ, Gorgen A, Gelletly W, Hayes A, Langdown SD, Lee IY, Liang X, Pearson CJ, Podolyak Z, Teng R, Ward D, Warner DD, Yamamoto AD (2004) Production of exotic nuclear isomers in multi-nucleon transfer reactions, LASER PHYSICS LETTERS 1 (6) pp. 317-324 IOP PUBLISHING LTD
Blazhev A, Braun N, Grawe H, Boutachkov P, Nara Singh S, Brock T, Liu Z, Wadsworth R, Górska M, Jolie J, Nowacki F, Pietri S, Domingo-Pardo C, Kojouharov I, Caceres L, Engert T, Farinon F, Gerl J, Goel N, Gr)bosz J, Hoischen R, Kurz N, Nociforo C, Prochazka A, Schaffner H, Steer S, Weick H, Wollersheim H-J, Ataç A, Bettermann L, Eppinger K, Faestermann T, Finke F, Geibel K, Hinke C, Gottardo A, Ilie G, Iwasaki H, Krücken R, Merchan E, Nyberg J, Pfützner M, Podolyák Z, Regan P, Reiter P, Rinta-Antila S, Rudolph D, Scholl C, Söderström P-A, Warr N, Woods P (2010) High-energy excited states in 98Cd, Journal of Physics: Conference Series 205 (1) IOP Publishing
Rice S, Valencia E, Algora A, Taín JL, Regan PH, Podolyák Z, Agramunt J, Gelletly W, Nichols AL (2012) Decay heat measurements using total absorption gamma-ray spectroscopy, Journal of Physics: Conference Series 381 (1)
A knowledge of the decay heat emitted by thermal neutron-irradiated nuclear fuel is an important factor in ensuring safe reactor design and operation, spent fuel removal from the core, and subsequent storage prior to and after reprocessing, and waste disposal. Decay heat can be readily calculated from the nuclear decay properties of the fission products, actinides and their decay products as generated within the irradiated fuel. Much of the information comes from experiments performed with HPGe detectors, which often underestimate the beta feeding to states at high excitation energies. This inability to detect high-energy gamma emissions effectively results in the derivation of decay schemes that suffer from the pandemonium effect, although such a serious problem can be avoided through application of total absorption ³-ray spectroscopy (TAS). The beta decay of key radionuclei produced as a consequence of the neutron-induced fission of 235U and 239Pu are being re-assessed by means of this spectroscopic technique. A brief synopsis is given of the Valencia-Surrey (BaF 2) TAS detector, and their method of operation, calibration and spectral analysis. © Published under licence by IOP Publishing Ltd.
Franchoo S, Achouri NL, Algora A, Al-Khatib A, Angelique J-C, Azaiez F, Baiborodin D, Bastin B, Beaumel D, Belleguic M, Benzoni G, Blumenfeld Y, Borcea C, Borcea R, Bourgeois C, Bringel P, Brown BA, Burger A, Buta A, Chapman R, Clement E, Dalouzy J-C, Dlouhy Z, Dombradi Z, Drouart A, Elekes Z, Engelhardt C, Fortier S, Fueloep Z, Gaudefroy L, Gelin M, Gibelin J, Goergen A, Grevy S, Guillemaud-Mueller D, Hammache F, Huebel H, Iacob S, Ibrahim F, Kemper K, Kerek A, Korten W, Krasznahorkay A, Kratz K-L, Laurent B, Lazar M, Lebhertz D, Lewitowiczk M, Liang X, Lienard E, Lukyanov S, Mandal S, Monrozeau C, Mrazek J, Nalpas L, Navin A, Negoita F, Nowacki F, Orr N, Ostrowski A, Otsuka T, Pantelica D, Penionzhkevich Y, Piekarewicz J, Podolyak Z, Pollacco E, Pougheon F, Poves A, Rotaru F, Roussel-Chomaz P, Rich E, Scarpaci J-A, Saint-Laurent M-G, Savajols H, Sletten G, Sohler D, Sorlin O, Stanoiu M, Stefan I, Suzuki T, Theisen C, Timar J, Timis C, Tryggestad E, Verney D, Williams S, Yamamoto A (2009) RECENT RESULTS FROM GANIL, ACTA PHYSICA POLONICA B 40 (3) pp. 419-425 POLISH ACAD SCIENCES INST PHYSICS
Mohammadi S, Podolyak Z, de Angelis G, Axiotis M, Bazzacco D, Bizzeti P, Brandolini F, Broda R, Bucurescu D, Farnea E, Gelletly W, Gadea A, Ionescu-Bujor M, Iordachescu A, Kroll T, Longdown S, Lunardi S, Marginean N, Martinez T, Medina N, Quintana B, Regan P, Rubio B, Ur C, Dobon J, Walker P, Zhang Y (2004) High-spin states populated in deep-inelastic reactions, BRAZILIAN JOURNAL OF PHYSICS 34 (3A) pp. 792-795 SOCIEDADE BRASILEIRA FISICA
Bucurescu D, Podolyak Z, Rusu C, de Angelis G, Zhang YH, Cata-Danil G, Cata-Danil I, Ivascu M, Marginean N, Marginean R, Mihailescu LC, Suliman GA, Regan PH, Gelletly W, Langdown SD, Dobon JJV, Bazzacco D, Lunardi S, Ur CA, Axiotis M, Gadea A, Farnea E, Ionescu-Bujor M, Iordachescu A, Kroll T, Martinez T, Bizzetti PG, Broda R, Medina NH, Quintana B, Rubio B (2005) High-spin states in the nuclei Y-91 and Nb-95, PHYSICAL REVIEW C 71 (3) ARTN 034315 AMERICAN PHYSICAL SOC
Rao MN, Ribas RV, Medina NH, Oliveira JRB, Rizzutto MA, Seale WA, Petrache CM, Bazzacco D, Lunardi S, Alvarez CR, Scanferla T, Ur CA, Venturelli R, Espinoza-Quinones FR, Podolyak Z, De Acuna D, de Angelis G, De Poli M, Farnea E, Gadea A, Napoli DR, Zhu LH, Dewald A, Gableske J, von Brentano P (1998) Influence of valence neutron configuration on quadrupole deformation in doubly-odd Pr-134, PHYSICAL REVIEW C 58 (3) pp. R1367-R1371 AMERICAN PHYSICAL SOC
Bruce AM, Lalkovski S, Bacelar AMD, Gorska M, Pietri S, Podolyak Z, Shi Y, Walker PM, Xu FR, Bednarczyk P, Caceres L, Casarejos E, Cullen IJ, Doornenbal P, Farrelly GF, Garnsworthy AB, Geissel H, Gelletly W, Gerl J, Grebosz J, Hinke C, Ilie G, Jaworski G, Kojouharov I, Kurz N, Myalski S, Palacz M, Prokopowicz W, Regan PH, Schaffner H, Steer S, Tashenov S, Wollersheim HJ (2010) Shape coexistence and isomeric states in neutron-rich Tc-112 and Tc-113, PHYSICAL REVIEW C 82 (4) ARTN 044312 AMER PHYSICAL SOC
Regan PH, Yamamoto AD, Xu FR, Wu CY, Macchiavelli AO, Cline D, Smith JF, Freeman SJ, Valiente-Dobon JJ, Andgren K, Chakrawarthy RS, Cromaz M, Fallon P, Gelletly W, Gorgen A, Hayes A, Hua H, Langdown SD, Lee IY, Pearson CJ, Podolyak Z, Teng R, Wheldon C (2003) Binary-reaction spectroscopy of Mo-99,Mo-100: Intruder alignment systematics in N=57 and N=58 isotones, PHYSICAL REVIEW C 68 (4) ARTN 044313 AMERICAN PHYSICAL SOC
Georgiev G, Neyens G, Hass M, Balabanski DL, Bingham C, Borcea C, Coulier N, Coussement R, Daugas JM, De France G, Santos FD, Gorska M, Grawe H, Grzywacz R, Lewitowicz M, Mach H, Matea I, Page RD, Pfutzner M, Penionzhkevich YE, Podolyak Z, Regan PH, Rykaczewski K, Sawicka M, Smirnova NA, Sobolev YG, Stanoiu M, Teughels S, Vyvey K (2002) g factor measurements of mu s isomeric states in neutron-rich nuclei around Ni-68 produced in projectile-fragmentation reactions, JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS 28 (12) PII S0954-3899(02)54753-8 pp. 2993-3006 IOP PUBLISHING LTD
Garnsworthy AB, Regan PH, Pietri S, Sun Y, Xu FR, Rudolph D, Gorska M, Caceres L, Podolyak Z, Steer SJ, Hoischen R, Heinz A, Becker F, Bednarczyk P, Doornenbal P, Geissel H, Gerl J, Grawe H, Grebosz J, Kelic A, Kojouharov I, Kurz N, Montes F, Prokopwicz W, Saito T, Schaffner H, Tachenov S, Werner-Malento E, Wollersheim HJ, Benzoni G, Blank B, Brandau C, Bruce AM, Camera F, Catford WN, Cullen IJ, Dombradi Z, Estevez E, Gelletly W, Ilie G, Jolie J, Jones GA, Jungclaus A, Kmiecik M, Kondev FG, Kurtukian-Nieto T, Lalkovski S, Liu Z, Maj A, Myalski S, Pfuetzner M, Schwertel S, Shizuma T, Simons AJ, Walker PM, Wieland O (2009) Isomeric states in neutron-deficient A similar to 80-90 nuclei populated in the fragmentation of Ag-107, PHYSICAL REVIEW C 80 (6) ARTN 064303 AMER PHYSICAL SOC
Boutachkov P, Górska M, Grawe H, Blazhev A, Braun N, Brock TS, Liu Z, Nara Singh BS, Wadsworth R, Pietri S (2011) High-spin isomers in 96Ag: Excitations across the Z=38 and Z=50, N=50 closed shells, Physical Review C - Nuclear Physics 84 (4) 044311 American Physical Society
Brock TS, Nara Singh BS, Boutachkov P, Braun N, Blazhev A, Liu Z, Wadsworth R, Górska M, Grawe H, Pietri S, Domingo-Pardo C, Rudolph D, Steer SJ, Ataç A, Bettermann L, Cáceres L, Engert T, Eppinger K, Faestermann T, Farinon F, Finke F, Geibel K, Gerl J, Gernhäuser R, Goel N, Gottardo A, Gr)bosz J, Hinke C, Hoischen R, Ilie G, Iwasaki H, Jolie J, Ka_ka_ A, Kojuharov I, Krücken R, Kurz N, Merchán E, Nociforo C, Nyberg J, Pfützner M, Prochazka A, Podolyák Z, Regan PH, Reiter P, Rinta-Antila S, Schaffner H, Scholl C, Söderström P-A, Warr N, Weick H, Wollersheim H-J, Woods PJ (2010) Observation of a new high-spin isomer in Pd94, Physical Review C - Nuclear Physics 82 (6)
Rizzutto MA, Rao MN, Seale WA, Oliveira JRB, Cybulska EW, Medina NH, Ribas RV, Bazzacco D, Brandolini F, Lunardi S, Petrache CM, Podolyak Z, Rossi-Alvarez C, Ur CA, de Angelis G, Napoli DR, Spolaore P, Gadea A, De Acuna D, De Poli M, Farnea E, Foltescu D, Ionescu-Bujor M, Iordachescu A, Chatterjee A, Saxena A, Bohus LS (2000) The pi h(11/2)circle times nu h(11/2) yrast band in odd-odd Tb-140, PHYSICAL REVIEW C 62 (2) ARTN 027302 AMERICAN PHYSICAL SOC
Algora A, Jolie J, Dombradi Z, Sohler D, Podolyak Z, Fenyes T (2003) Supersymmetry model in As-73 revisited: Electromagnetic transition rates and U(6/12), PHYSICAL REVIEW C 67 (4) ARTN 044303 AMERICAN PHYSICAL SOC
Podolyak Z, Bizzeti PG, Bizzeti-Sona AM, Gadea A, Lunardi S, Bazzacco D, de Angelis G, De Poli M, Napoli DR, Petrache CM, Alvarez CR, Ur CA, Kleinheinz P, Blomqvist J (2001) Shell model and octupole excitations in Eu-147, PHYSICAL REVIEW C 64 (3) ARTN 034302 AMERICAN PHYSICAL SOC
Gómez-Hornillos MB, Gorlychev V, Caballero-Folch R, Calvino F, Cortés G, Pretel C, Rissanen J, Eronen T, Taín JL, Algora A, Agramunt J, Valencia E, Kratz KL, Lhersonneau G, Pfeiffer B, Cano-Ott D, Martínez T, García A, Achouri L, Parlog M, Podolyak Z (2012) ²-delayed neutron emission studies, Hyperfine Interactions pp. 1-10
The study of ²-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 ²-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.
Wheldon C, Valiente-Dobon JJ, Regan PH, Pearson CJ, Wu CY, Smith JF, Macchiavelli AO, Cline D, Chakrawarthy RS, Chapman R, Cromaz M, Fallon P, Freeman SJ, Gorgen A, Gelletly W, Hayes A, Hua H, Langdown SD, Lee IY, Liang X, Podolyak Z, Sletten G, Teng R, Ward D, Warner DD, Yamamoto AD (2004) Multi-quasi particle states in W-184 via multi-nucleon transfer, EUROPEAN PHYSICAL JOURNAL A 20 (3) pp. 365-369 SPRINGER
Fujita Y, Rubio B, Adachi T, Molina F, Algora A, Berg GPA, von Brentano P, Buscher J, Cocolios T, De Frenne D, Fransen C, Fujita H, Fujita K, Gelletly W, Hatanaka K, Huyse M, Ivanov O, Kudryavtsev Y, Jacobs E, Jordan D, Nakanishi K, Negret A, Pauwels D, Perez-Cerdan AB, Pietralla N, Podolyak Z, Popescu L, Raabe R, Sakemi Y, Sawicka M, Shimbara Y, Shimizu Y, Shizuma T, Tameshige Y, Tamii A, Van den Bergh P, Van de Walle J, Van Duppen P, Yosoi M, Zell KO (2008) Gamow-Teller transitions in exotic pf-shell nuclei relevant to supernova explosion, JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS 35 (1) IOP PUBLISHING LTD
Podolyak Z, Steer SJ, Pietri S, Xu FR, Liu HL, Regan PH, Rudolph D, Garnsworthy AB, Hoischen R, Gorska M, Gerl J, Wollersheim HJ, Kurtukian-Nieto T, Benzoni G, Shizuma T, Becker F, Bednarczyk P, Caceres L, Doornenbal P, Geissel H, Grebosz J, Kelic A, Kojouharov I, Kurz N, Montes F, Prokopowicz W, Saito T, Schaffner H, Tashenov S, Heinz A, Pfutzner M, Jungclaus A, Balabanski DL, Brandau C, Bruce AM, Catford WN, Cullen IJ, Dombradi Z, Estevez E, Gelletly W, Ilie G, Jolie J, Jones GA, Kmiecik M, Kondev FG, Kruecken R, Lalkovski S, Liu Z, Maj A, Myalski S, Schwertel S, Walker PM, Werner-Malento E, Wieland O (2009) Weakly deformed oblate structures in Os-198(76)122, PHYSICAL REVIEW C 79 (3) ARTN 031305 AMER PHYSICAL SOC
Rudolph D, Gadea A, de Angelis G, Fahlander C, Algora A, Andreoiu C, Cardona R, Chandler C, Farnea E, Narro JG, Nyberg J, Palacz M, Podolyak Z, Steinhardt T, Thelen O (2001) The lifetime of the proton-decaying 8915 keV state in Cu-58, NUCLEAR PHYSICS A 694 (1-2) pp. 132-146 ELSEVIER SCIENCE BV
Gladnishki KA, Podolyak Z, Gerl J, Hellstrom M, Kopatch Y, Mandal S, Gorska M, Regan PH, Wollersheim HJ, Banu A, Benzoni G, Boardman H, La Commara M, Ekman J, Fahlander C, Geissel H, Grawe H, Kaza E, Korgul A, Matos M, Mineva MN, Page RD, Pearson CJ, Plettner C, Rudolph D, Scheidenberger C, Shishkin V, Sohler D, Summerer K, Valiente-Dobon JJ, Weick H, Winkler M (2003) Isomer spectroscopy in the neutron-deficient lead region following projectile fragmentation, ACTA PHYSICA POLONICA B 34 (4) pp. 2395-2398 ACTA PHYSICA POLONICA B, JAGELLONIAN UNIV, INST PHYSICS
Nakhostin M, Podolyak Z, Regan PH (2014) Digital processing of signals from LaBr3:Ce scintillation detectors, JOURNAL OF INSTRUMENTATION 9 ARTN C12049 IOP PUBLISHING LTD
Wheldon C, Valiente-Dobon JJ, Regan PH, Pearson CJ, Wu CY, Smith JF, Macchiavelli AO, Cline D, Chakrawarthy RS, Chapman R, Cromaz M, Fallon P, Freeman SJ, Gelletly W, Goergen AG, Hayes AB, Hua H, Langdown SD, Lee IY, Liang X, Podolyak Z, Sletten G, Teng R, Ward D, Warner DD, Yamamoto AD (2006) Observation of an isomeric state in Au-197, PHYSICAL REVIEW C 74 (2) ARTN 027303 AMERICAN PHYSICAL SOC
Stefanova EA, Lalkovski S, Korichi A, Kutsarova T, Lopez-Martens A, Xu FR, Liu HL, Kisyov S, Minkova A, Bazzacco D, Bergström M, Görgen A, Hannachi F, Herskind B, Hübel H, Jansen A, Khoo TL, Podolyák Z, Schönwasser G (2012) Observation of positive-parity bands in 109Pd and 111Pd: Enhanced ³ softness, Physical Review C - Nuclear Physics 86 (4)
The neutron-rich nuclei 109Pd and 111Pd were produced as fission fragments following the 30Si+168Er reaction at 142 MeV. Using the identification based on the coincidences with the complementary fission fragments, the only positive-parity bands observed so far in 109Pd and 111Pd emerged from this work. A band, built on top of the 5/2 + ground state exhibiting ”I=1 energy-level staggering, was observed in each of these nuclei. Both nuclei of interest, 109Pd and 111Pd, are suggested to lie in the transitional region of Pd isotopes of maximum ³ softness. The ground states of both nuclei are predicted by total Routhian surface calculations to be extremely ³ soft with shallow triaxial minima. The first crossing in the new bands is proposed to be attributable to an alignment of h11/22 neutrons. © 2012 American Physical Society.
Kurcewicz J, Farinon F, Geissel H, Pietri S, Nociforo C, Prochazka A, Weick H, Winfield JS, Estradé A, Dillmann I, Evdokimov A, Gerl J, Gregor E, Keli?-Heil A, Knöbel R, Litvinov Y, Merchan E, Mukha I, Naqvi F, Pfützner M, Riese B, Ricciardi MV, Scheidenberger C, Spiller P, Stadlmann J, Terashima S, Winkler M, Farinon F, Geissel H, Prochazka A, Dillmann I, Evdokimov A, Riese B, Scheidenberger C, Sun B, Estradé A, Allegro PRP, Bail A, Bélier G, Taïeb J, Benlliure J, Benzoni G, Bunce M, Bowry M, Podolyák Z, Regan PH, Caballero-Folch R, Gottardo A, Valiente-Dobón JJ, Janik R, Sitar B, Strmen P, Szarka I, Kubo T, Terashima S, Litvinov Y, Merchan E, Naqvi F, Pfützner M, Pomorski M, Sun B, Woods P (2012) Discovery and cross-section measurement of neutron-rich isotopes in the element range from neodymium to platinum with the FRS, Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 717 (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 60eZe78. 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.
Oliveira J, Cybulska E, Medina N, Rao M, Ribas R, Seale W, Espinoza-Quinones F, Rizzutto M, Bazzacco D, Brandolini F, Lunardi S, Petrache C, Podolyak Z, Rossi-Alvarez C, Ur C, de Angelis G, Napoli D, Spolaore P, Gadea A, De Acuna D, De Poli M, Farnea E, Foltescu D, Ionescu-Bujor M, Iordachescu A (2000) High-spin state spectroscopy of Dy-143, PHYSICAL REVIEW C 62 (6) ARTN 06430 AMERICAN PHYSICAL SOC
Neyens G, Atanasova L, Balabanski DL, Becker F, Bednarczyk P, Caceres L, Doornenbal P, Gerl J, Gorska M, Grebosz J, Hass M, Ilie G, Kurz N, Kojouharov I, Lozeva R, Maj A, Pfutzner M, Pietri S, Podolyak Z, Prokopowicz W, Saitoh TR, Schaffner H, Simpson G, Vermeulen N, Werner-Malento E, Walker J, Wollersheim HJ, Bazzacco D, Benzoni G, Blazhev A, Blasi N, Bracco A, Brandau C, Camera F, Chamoli SK, Chmel S, Crespi FCL, Daugas JM, De Rydt M, Detistov P, Fahlander C, Farnea E, Georgiev G, Gladnishki K, Hoischen R, Ionescu-Bujor M, Iordachescu A, Jolie J, Jungclaus A, Kmiecik M, Krasznahorkay A, Kulessa R, Lakshmi S, Lo Bianco G, Mallion S, Mazurek K, Meczynski W, Montanari D, Myalsky S, Perru O, Rudolph D, Rusev G, Saltarelli A, Schwengner R, Styczen J, Turzo K, Valiente-Dobon JJ, Wieland O, Zieblinski M (2007) g factor measurements on relativistic isomeric beams produced by fragmentation and U-fission: The g-rising project at GSI, ACTA PHYSICA POLONICA B 38 (4) pp. 1237-1247 ACTA PHYSICA POLONICA B, JAGELLONIAN UNIV, INST PHYSICS
Bruce AM, Bacelar AMD, Benzoni G, Gadea A, Górska M, Gottardo A, Pietri S, Podolyák Z, Valiente-Dobón JJ, Alcántara-Núñez JA, Al-Dahan N, Algora A, Alkhomashi N, Allegro PRP, Ayyad Y, Boutachkov P, Bowry M, Bunce M, Casarejos E, Cortés ML, Deo AY, Domingo-Prado C, Doncel M, Eppinger K, Farinon F, Farrelly GF, Geissel H, Gerl J, Goel N, Gr)bosz J, Gregor E, Haberman T, Hoischen R, Janik R, Klupp S, Kojouharov I, Kurz N, Lunardi S, Mandal S, Menegazzo R, Mengoni D, Naqvi F, Nicolini R, Nociforo C, Pissulla T, Prochazka A, Prokopowicz W, Regan PH, Rudolph D, Sahin E, Schaffner H, Sharma A, Sitar B, Siwal D, Steiger K, Strmen P, Szarka I, Walker PM, Weick H, Wollersheim HJ (2012) ² decay of 102Y produced in projectile fission of 238U, Journal of Physics: Conference Series 381 (1)
The population of 102Zr following the ² decay of 102Y produced in the projectile fission of 238U at the GSI facility in Darmstadt, Germany has been studied. 102Y is known to decay into 102Zr via two states, one of high spin and the other low spin. These states preferentially populate different levels in the 102Zr daughter. In this paper the intensities of transitions in 102Zr 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.
Alzimami K, Abuelhia E, Podolyak Z, Ioannou A, Spyrou NM (2008) Characterization of LaBr(3): Ce and LaCl(3): Ce scintillators for gamma-ray spectroscopy, JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY 278 (3) pp. 755-759 SPRINGER
Rizzi V, Viesti G, Bazzacco D, Algora-Pineda A, Appelbe D, de Angelis G, Belcari N, Cinausero M, De Poli M, Drake TE, Gadea A, Galindo-Uribarri A, Gelli N, Fabris D, Farnea E, Fioretto E, Krolas W, Kroll T, Lucarelli F, Lunardi S, Lunardon M, Martinez T, Menegazzo R, Nayak BK, Nebbia G, Napoli DR, Nyako B, Petrache C, Podolyak Z, Prete G, Alvarez CR, Samant A, Spolaore P, Ur C, Zuber K (2000) Search for hyperdeformed structures populated in the Cl-37+Sn-120 reaction by using EUROBALL III, EUROPEAN PHYSICAL JOURNAL A 7 (3) pp. 299-301 SPRINGER VERLAG
Viesti G, Rizzi V, Cinausero M, Gelli N, Gadea A, Bazzacco D, Algora-Pineda A, Appelbee D, De Angelis G, Belcari N, De Poli M, Drake T, Fabris D, Farnea E, Fioretto E, Galindo-Uribarri A, Krolas W, Kroll T, Lucarelli F, Lunardi S, Lunardon M, Martinez T, Menegazzo R, Nayak B, Nebbia G, Napoli D, Nyako B, Petrache C, Podolyak Z, Prete G, Rossi Alvarez C, Spolaore P, Ur C, Zuber K (2001) Observation of a double giant dipole resonance in fusion-evaporation reactions, Physical Review C - Nuclear Physics 63 (3) pp. 346111-346115
The emission of two coincident energetic (Ee8 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.
Podolyak Z, Bizzeti PG, Bizzeti-Sona AM, Gadea A, Lunardi S, Bazzacco D, Dewald A, Algora A, de Angelis G, De Poli M, Farnea E, Kasemann DR, Klug T, Kroll T, Lenzi S, Martinez T, Napoli DR, Petrache CM, Peusquens R, Alvarez CR, Ur CA, Kleinheinz P, Blomqvist J (2001) Competition between octupole and shell model states near the doubly closed Gd-146, INTERNATIONAL SYMPOSIUM ON NUCLEAR STRUCTURE PHYSICS pp. 391-392 WORLD SCIENTIFIC PUBL CO PTE LTD
Podolyak Z, Bizzeti PG, Bizzeti-Sona AM, Lunardi S, Bazzacco D, Dewald A, Algora A, de Angelis G, De Poli M, Farnea E, Gadea A, Kasemann DR, Klug T, Kroll T, Lenzi S, Napoli DR, Petrache CM, Peusquens R, Alvarez CR, Martinez T, Ur CA (2000) Multiple octupole excitations in Gd-148, EUROPEAN PHYSICAL JOURNAL A 8 (2) pp. 147-151 SPRINGER
Regan PH, Podolyák Z, Alharbi T, Mason PJR, Bruce AM, Townsley C, Roberts OJ, MÎrginean N, MÎrginean R, GhitÎ D, Mullholland K, Smith JF, Britton R, Patel Z, Nakhostin M, Rice S, Wilson E, Alazemi N, Alkhomashi N, Bucurescu D, Cata-Danil G, Deleanu D, Filipescu D, Glodariu T, Cata-Danil I, Mihai C, Negret A, Nita CR, Sava T, Stroe L, Suliman G, Detistov P, Garg U, Bender PC, Algora A, Liddick S, Cooper N, Werner V, Lalkovski S, Kisyov S, Browne F, Söderström PA, Watanabe H, Sumikama T (2013) Precision lifetime measurements using LaBr3detectors with stable and radioactive beams, EPJ Web of Conferences 63
A range of high resolution gamma-ray spectroscopy measurements have been carried out using arrays which include a number of Cerium-doped Lanthanum-Tribromide (LrBr3(Ce)) scintillation detectors used in conjunction with high-resolution hyper-pure germanium detectors. Examples of the spectral and temporal responses of such set-ups, using both standard point radioactive sources 152Eu and 56Co, and in-beam fusionevaporation reaction experiments for precision measurements of nuclear excited states in 34P and 138Ce are presented. The current and future use of such arrays at existing (EURICA at RIKEN) and future (NUSTAR at FAIR) secondary radioactive beam facilities for precision measurements of excited nuclear state lifetimes in the 10 ps to 10 ns regime are also discussed. © Owned by the authors, published by EDP Sciences, 2013.
Rizzutto MA, Rao MN, Scale WA, Oliveira JRB, Cybulska EW, Medina NH, Ribas RV, Espinoza-Quiñones FR, Bazzacco D, Brandolini F, Lunardi S, Petrache CM, Podolyák Z, Rossi-Alvarez C, Ur CA, De Angelis G, Napoli DR, Spolaore P, Gadea A, De Acuña D, De Poli M, Farnea E, Foltescu D, Ionescu-Bujor M, Iordachescu A, Chatterjee A, Saxena A, Sajo Bohus L (2000) The Àh11/2—½h11/2 yrast band in odd-odd 140Tb, Physical Review C - Nuclear Physics 62 (2) pp. 273021-273024
The Àh11/2—½h11/2 yrast band in the odd-odd nucleus 140Tb has been populated by the 92Mo (54Fe, ±pn) 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).
Algora A, Valencia E, Taín JL, Jordan MD, Agramunt J, Rubio B, Estevez E, Molina F, Montaner A, Guadilla V, Fallot M, Porta A, Zakari-Issoufou AA, Bui VM, Rice S, Podolyák Z, Regan PH, Gelletly W, Bowry M, Mason P, Farrelly GF, Rissanen J, Eronen T, Moore I, Penttilä H, Äystö J, Eloma V, Hakala J, Jokinen A, Kolkinen V, Reponen M, Sonnenschein V, Cano-Ott D, Martínez T, Mendoza E, Garcia AR, Gomez-Hornillos MB, Gorlychev V, Caballero-Folch R, Kondev FG, Sonzogni AA (2014) Total Absorption Study of Beta Decays Relevant for Nuclear Applications and Nuclear Structure, Nuclear Data Sheets 120 pp. 12-15
An overview is given of our activities related to the study of the beta decay of neutron rich nuclei relevant for nuclear applications. Recent results of the study of the beta decay of 87,88Br using a new segmented total absorption spectrometer are presented. The measurements were performed at the IGISOL facility using trap-assisted total absorption spectroscopy. © 2014 Elsevier Inc..
NicÎ CR, Bucurescu D, MÎrginean N, Avrigeanu M, Bocchi G, Bottoni S, Bracco A, Bruce AM, CÎta-Danil G, Coló G, Deleanu D, Filipescu D, GhicÎ DG, Glodariu T, Leoni S, Mihai C, Mason PJR, MÎrginean R, Negret A, PantelicÎ D, Podolyak Z, Regan PH, Sava T, Stroe L, Toma S, Ur CA, Wilson E (2014) Fast-timing lifetime measurements of excited states in Cu 67, Physical Review C - Nuclear Physics 89 (6)
The half-lives of the 9/2+, 13/2+, and 15/2+ yrast states in the neutron-rich Cu67 nucleus were determined by using the in-beam fast-timing technique. The experimentally deduced E3 transition strength for the decay of the 9/2+ level to the 3/2- ground state indicates that the wave function of this level might contain a collective component arising from the coupling of the odd proton p3/2 with the 3- state in Ni66. Theoretical interpretations of the 9/2+ state are presented within the particle-vibration weak-coupling scheme involving the unpaired proton and the 3- state from Ni66 and within shell-model calculations with a Ni56 core using the jj44b residual interaction. The shell model also accounts reasonably well for the other measured electromagnetic transition probabilities. © 2014 American Physical Society.
Myalski S, Maj A, Podolyák Z, Kmiecik M, Bednarczyk P, Grebosz J, Regan PH, Garnsworthy AB, Pietri S, Rudolph D, Steer SJ, Becker F, Gerl J, Górska M, Grawe H, Kojouharov I, Schaffner H, Wollersheim HJ, Prokopowicz W, Benzoni G, Blank B, Brandau C, Bruce AM, Cáceres L, Camera F, Catford WN, Cullen IJ, Dombradi Z, Doornenbal P, Estevez E, Geissel H, Gelletly W, Heinz A, Hoischen R, Ilie G, Jones GA, Jungclaus A, Kelic A, Kondev FG, Kurtukian-Nieto T, Kurz N, Lalkovski S, Liu Z, Montes F, Pfützner M, Saito T, Shizuma T, Simons AJ, Schwertel S, Tachenov S, Walker PM, Werner-Malento E, Wieland O (2012) Study of isomer production rates for A = 142-152 and Z = 62-67 in fragmentation of a relativistic 208Pb beam, Acta Physica Polonica B 43 (2) pp. 253-259
We have investigated nuclear fragmentation reactions of a relativistic 208Pb beam.Ten isomeric states for nuclei with A = 142-152 and Z = 62-67 were observed. Measured isomeric ratios were compared, together with values from other experiments, with prediction of theoretical models. The discrepancies between the experimental and theoretical values were discussed in terms of transitions by-passing the isomer that are not included in the models.
Jones GA, Williams SJ, Walker PM, Podolyak Z, Zhu S, Carpenter MP, Carroll JJ, Chakrawarthy RS, Chowdhury P, Cullen IJ, Dracoulis GD, Garnsworthy AB, Hackman G, Janssens RVF, Khoo TL, Kondev FG, Lane GJ, Liu Z, Seweryniak D, Thompson NJ (2008) High-spin, multiparticle isomers in (121,123)Sb, PHYSICAL REVIEW C 77 (3) ARTN 034311 AMER PHYSICAL SOC
Pattison LK, Cullen DM, Smith JF, Fletcher AM, Walker PM, El-Masri HM, Podolyak Z, Wood RJ, Scholey C, Wheldon C, Mukherjee G, Balabanski D, Djongolov M, Dalsgaard T, Thisgaard H, Sletten G, Kondev F, Jenkins D, Lane GJ, Lee IY, Macchiavelli AO, Frauendorf S, Almehed D (2003) Multiphonon vibrations at high angular momentum in Os-182, PHYSICAL REVIEW LETTERS 91 (18) ARTN 182501 AMERICAN PHYSICAL SOC
Garnsworthy AB, Regan PH, Caceres L, Pietri S, Sun Y, Rudolph D, Gorska M, Podolyak Z, Steer SJ, Hoischen R, Heinz A, Becker F, Bednarczyk P, Doornenbal P, Geissel H, Gerl J, Grawe H, Grebosz J, Kelic A, Kojouharov I, Kurz N, Montes F, Prokopowicz W, Saito T, Schaffner H, Tachenov S, Werner-Malento E, Wollersheim HJ, Benzoni G, Blank BB, Brandau C, Bruce AM, Camera F, Catford WN, Cullen IJ, Dombradi Z, Estevez E, Gelletly W, Ilie G, Jolie J, Jones GA, Jungclaus A, Kmiecik M, Kondev FG, Kurtukian-Nieto T, Lalkovski S, Liu Z, Maj A, Myalski S, Pfutzner M, Schwertel S, Shizuma T, Simons AJ, Walker PM, Wielandi O, Xu FR (2008) Neutron-proton pairing competition in N = Z nuclei: Metastable state decays in the proton dripline nuclei Nb-82(41) and Tc-86(43), PHYSICS LETTERS B 660 (4) pp. 326-330 ELSEVIER SCIENCE BV
Al-Dahan N, Podolyák Z, Regan PH, Steer SJ, Bacelar AMD, Alkhomashi N, Górska M, Gerl J, Wollersheim HJ, Pietri SB, Grawe H, Deo AY, Farrelly G, Boutachkov P, Domingo-Pardo C, Algora A, Benlliure J, Bracco A, Bruce AM, Calore E, Casarejos E, Cullen IJ, Detistov P, Dombrádi Z, Doncel M, Farinon F, Geissel H, Gelletly W, Goel N, Grebosz J, Hoischen R, Kojouharov I, Kurz N, Lalkovski S, Leoni S, Molina F, Montanari D, Morales AI, Musumarra A, Napoli DR, Nicolini R, Nociforo C, Prochazka A, Prokopowicz W, Rubio B, Rudolph D, Schaffner H, Strmen P, Szarka I, Swan T, Valiente-Dobon JJ, Verma S, Walker PM, Weick H (2009) Isomeric states in 208Hg and 209Tl populated in fragmentation of 238U, Acta Physica Polonica B 40 (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.
Lieder RM, Rzaca-Urban T, Brands H, Gast W, Jager HM, Mihailescu L, Marcinkowska Z, Urban W, Morek T, Droste C, Szymanski P, Chmel S, Bazzacco D, Falconi G, Menegazzo R, Lunardi S, Alvarez CR, de Angelis G, Farnea E, Gadea A, Napoli DR, Podolyak Z, Venkova T, Wyss R (2002) Development of magnetic rotation in light Gd nuclei; study of Gd-142, EUROPEAN PHYSICAL JOURNAL A 13 (3) pp. 297-305 SPRINGER-VERLAG
Alharbi T, Mason PJ, Regan PH, Podolyák Z, M?rginean N, Nakhostin M, Bowry M, Bucurescu D, C?ta-Danil G, C?ta-Danil I, Deleanu D, Filipescu D, Glodariu T, Ghic? D, M?rginean R, Mihai C, Negret A, Pascu S, Sava T, Stroe L, Suliman G, Zamfir NV, Bruce AM, Rodriguez Triguero C, Bender PC, Garg U, Erduran MN, Kusoglu A, Bostan M, Detistov P, Alkhomashi N, Sinha AK, Chakrabarti R, Ghugre SS (2012) Gamma-ray fast-timing coincidence measurements from the (18)O+(18)O fusion-evaporation reaction using a mixed LaBr(3)-HPGe array, Appl Radiat Isot 70 (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(À)=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.
Patel Z, Podolyak Z, Walker PM, Regan PH, Söderström P-A, Watanabe H, Ideguchi E, Simpson GS, Nishimura S, Browne F, Doornenbal P, Lorusso P, Rice S, Sinclair L, Sumikama T, Wu J, Xu ZY, Aoi N, Baba H, Bello Garrote FL, Benzoni G, Daido R, Dombrádi Z, Fang Y, Fukuda N, Gay G, Go S, Gottardo A, Inabe N, Isobe T, Kameda K, Kobayashi K, Kobayashi M, Komatsubara T, Kojouharov I, Kubo T, Kurz N, Kuti I, Li Z, Liu HL, Matsushita M, Michimasa S, Moon CB, Nishibata H, Nishizuka I, Odahara A, Sahin E, Sakurai H, Schaffner H, Suzuki H, Takeda H, Taprogge J, Vajta Z, Xu FR, Yagi A, Yokoyama R (2016) ²-decay spectroscopy of neutron-rich 160,161,162Sm isotopes, EPJ Web of Conferences 123 (2016) EDP Sciences
Neutron-rich 160,161,162Sm isotopes have been populated at the RIBF, RIKEN via ² first time. ²-coincident ³ rays were observed in all three isotopes including ³ rays from the isomeric decay of 160Sm and 162Sm. The isomers in 160Sm and 162Sm have previously been observed but have been populated via ² 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
Perries S, Astier A, Ducroux L, Meyer M, Redon N, Petrache CM, Bazzacco D, Falconi G, Lunardi S, Lunardon M, Alvarez CR, Ur CA, Venturelli R, Viesti G, Deloncle I, Porquet MG, de Angelis G, de Poli M, Fahlander C, Farnea E, Foltescu D, Gadea A, Napoli DR, Podolyak Z, Bracco A, Frattini S, Leoni S, Cederwall B, Johnson A, Wyss RA (1999) Decay-out of the yrast superdeformed band in Nd-136: Towards an experimental extraction of the neutron pairing gap at large deformation, PHYSICAL REVIEW C 60 (6) ARTN 064313 AMERICAN PHYSICAL SOC
Al-Dahan N, Podolyak Z, Regan PH, Steer SJ, Alkhomashi N, Bacelar AMD, Gorska M, Pietri SB, Gelletly W, Walker PM, Farrelly G, Morales AI, Deo AY, Cullen IJ, Gerl J, Domingo-Pardo C, Verma S, Swan T, Wollersheim HJ, Bruce AM, Lalkovski S, Benlliure J, Algora A, Boutachkov P, Bracco A, Calore E, Casarejos E, Detistov P, Dombradi Z, Doncel M, Farinon F, Geissel H, Goel N, Grebosz J, Hoischen R, Kojouharov I, Leoni S, Molina F, Montanari D, Musumarra A, Nicolini R, Napoli DR, Nociforo C, Rubio B, Prochazka A, Rudolph D, Strmen P, Szarka I, Valiente-Dobon JJ, Weick H (2009) Structure of N >= 126 nuclei produced in fragmentation of (238)U, CAPTURE GAMMA-RAY SPECTROSCOPY AND RELATED TOPICS 1090 pp. 145-148 AMER INST PHYSICS
Alkhomashi N, Regan PH, Podoyak Z, Pietri SB, Garnsworthy AB, Steer SJ, Benlliure J, Caserejos E, Gorska M, Gerl J, Wollersheim HJ, Grebosz J, Kurz N, Kojouharov I, Schaffner H, Alcora A, Benzoni G, Blazhev A, Boutachkov P, Bruce AM, Caceres L, Doornenbal P, Bacelar AMD, Cullen IJ, Estevez ME, Farrelly G, Fujita Y, Gelletly W, Hoischen R, Kumar R, Lalkovski S, Liu Z, Mihai C, Molina F, Muecher D, Rubio B, Tamii A, Tashenov S, Valiente-Dobon JJ, Walker PM, Woods PJ (2009) beta(-)-DELAYED AND ISOMER SPECTROSCOPY OF NEUTRON-RICH Ta AND W ISOTOPES, ACTA PHYSICA POLONICA B 40 (3) pp. 875-878 WYDAWNICTWO UNIWERSYTETU JAGIELLONSKIEGO
Hammond G, Bentley MA, Becker F, Grebosz J, Taylor MJ, Banu A, Barton CJ, Beck T, Bednarczyk P, Bracco A, Bruce AM, Bullock LC, Burger A, Camera F, Chandler C, Doornenbal P, Gerl J, Geissel H, Gorska M, Hellstrom M, Judsond D, Kojouharov I, Kurz N, Lozeva R, Maj A, Mandal S, McGuirk B, Muralithar S, Paul ES, Podolyak Z, Prokopowicz W, Rudolph D, Saito N, Saito TR, Schaffner H, Simpson J, Warner DD, Weick H, Weldon C, Winkler M, Wollersheim HJ (2005) Spectroscopy of T=3/2 mirror nuclei via two-step fragmentation using rising, ACTA PHYSICA POLONICA B 36 (4) pp. 1253-1257 ACTA PHYSICA POLONICA B, JAGELLONIAN UNIV, INST PHYSICS
Cieplicka N, Fornal B, Maier KH, Szpak B, Broda R, Krolas W, Pawlat T, Wrzesinski J, Janssens RVF, Carpenter MP, Chiara CJ, Hoffman CR, Kondev FG, Lauritsen T, Zhu S, Podolyak Z, Bowry M, Bunce M, Gelletly W, Kempley R, Reed M, Regan P, Walker P, Wilson E, Deo AY, Dracoulis G, Lane G, Rodriguez-Triguero C (2014) ANGULAR DISTRIBUTIONS OF gamma RAYS FROM Bi-210 PRODUCED IN Pb-208+Pb-208 DEEP-INELASTIC REACTIONS, ACTA PHYSICA POLONICA B 45 (2) pp. 205-210 WYDAWNICTWO UNIWERSYTETU JAGIELLONSKIEGO
Muto S, Stone NJ, Bingham CR, Stone JR, Walker PM, Audi G, Gaulard C, Köster U, Nikolov J, Nishimura K, Ohtsubo T, Podolyak Z, Risegari L, Simpson GS, Veskovic M, Walters WB (2014) Magnetic properties of Hf 177 and Hf 180 in the strong-coupling deformed model, Physical Review C - Nuclear Physics 89 (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 ³ 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.
Gottardo A, Valiente-Dobón JJ, Benzoni G, Nicolini R, Gadea A, Lunardi S, Boutachkov P, Bruce AM, Górska M, Grebosz J, Pietri S, Podolyák Z, Pfützner M, Regan PH, Weick H, Alcántara Núñez J, Algora A, Al-Dahan N, De Angelis G, Ayyad Y, Alkhomashi N, Allegro PRP, Bazzacco D, Benlliure J, Bowry M, Bracco A, Bunce M, Camera F, Casarejos E, Cortes ML, Crespi FCL, Corsi A, Denis Bacelar AM, Deo AY, Domingo-Pardo C, Doncel M, Dombradi Z, Engert T, Eppinger K, Farrelly GF, Farinon F, Farnea E, Geissel H, Gerl J, Goel N, Gregor E, Habermann T, Hoischen R, Janik R, Klupp S, Kojouharov I, Kurz N, Lenzi SM, Leoni S, Mandal S, Menegazzo R, Mengoni D, Million B, Morales AI, Napoli DR, Naqvi F, Nociforo C, Prochazka A, Prokopowicz W, Recchia F, Ribas RV, Reed MW, Rudolph D, Sahin E, Schaffner H, Sharma A, Sitar B, Siwal D, Steiger K, Strmen P, Swan TPD, Szarka I, Ur CA, Walker PM, Wieland O, Wollersheim HJ, Nowacki F, Maglione E, Zuker AP (2012) New isomers in the full seniority scheme of neutron-rich lead isotopes: The role of effective three-body forces, Physical Review Letters 109 (16)
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.
Lozeva RL, Simpson GS, Grawe H, Neyens G, Atanasova LA, Balabanski DL, Bazzacco D, Becker F, Bednarczyk P, Benzoni G, Blasi N, Blazhev A, Bracco A, Brandau C, Caceres L, Camera F, Chamoli SK, Crespi FCL, Daugas J-M, Detistov P, De Rydt M, Doornenbal P, Fahlander C, Farnea E, Georgiev G, Gerl J, Gladnishki KA, Gorska M, Grebosz J, Hass M, Hoischen R, Ilie G, Ionescu-Bujor M, Iordachescu A, Jolie J, Jungclaus A, Kmiecik M, Kojouharov I, Kurz N, Lakshmi SP, Lo Bianco G, Mallion S, Maj A, Montanari D, Perru O, Pfuetzner M, Pietri S, Pinston JA, Podolyak Z, Prokopowicz W, Rudolph D, Rusev G, Saitoh TR, Saltarelli A, Schaffner H, Schwengner R, Tashenov S, Turzo K, Valiente-Dobon JJ, Vermeulen N, Walker J, Werner-Malento E, Wieland O, Wollersheim H-J (2008) New sub-mu s isomers in Sn-125,Sn-127,Sn-129 and isomer systematics of Sn124-130, PHYSICAL REVIEW C 77 (6) ARTN 064313 AMER PHYSICAL SOC
Al-Dahan N, Regan PH, Podolyák Z, Walker PM, Alkhomashi N, Dracoulis GD, Farrelly G, Benlliure J, Pietri SB, Casten RF, Stevenson PD, Gelletly W, Steer SJ, Garnsworthy AB, Casarejos E, Gerl J, Wollersheim HJ, Grebosz J, Górska M, Kojouharov I, Schaffner H, Algora A, Benzoni G, Blazhev A, Boutachkov P, Bruce AM, Cullen IJ, Denis Bacelar AM, Deo AY, Estevez ME, Fujita Y, Hoischen R, Kumar R, Lalkovski S, Liu Z, Mason PJ, Mihai C, Molina F, Mücher D, Rubio B, Tamii A, Tashenov S, Valiente-Dobón JJ, Woods PJ (2012) Multiple ² - Decaying states in 194Re: Shape evolution in neutron-rich osmium isotopes, Physical Review C - Nuclear Physics 85 (3) 034301 American Physical Society
decays from heavy, neutron-rich nuclei with A
Denis Bacelar AM, Bruce AM, Podolyák Z, Al-Dahan N, Górska M, Lalkovski S, Pietri S, Ricciardi MV, Algora A, Alkhomashi N, Benlliure J, Boutachkov P, Bracco A, Calore E, Casarejos E, Cullen IJ, Deo AY, Detistov P, Dombradi Z, Domingo-Pardo C, Doncel M, Farinon F, Farrelly GF, Geissel H, Gelletly W, Gerl J, Goel N, Gr)bosz J, Hoischen R, Kojouharov I, Kurz N, Leoni S, Molina F, Montanari D, Morales AI, Musumarra A, Napoli DR, Nicolini R, Nociforo C, Prochazka A, Prokopowicz W, Regan PH, Rubio B, Rudolph D, Schmidt KH, Schaffner H, Steer SJ, Steiger K, Strmen P, Swan TPD, Szarka I, Valiente-Dobón JJ, Verma S, Walker PM, Weick H, Wollersheim HJ (2013) The population of metastable states as a probe of relativistic-energy fragmentation reactions, Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 723 (4-5) pp. 302-306
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 238U beam by a 9Be 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 ¼s and spin values up to 55/2? 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.
Regan PH, Wheldon C, Yamamoto AD, Wu CY, Ashley S, Mumby-Croft P, Seaborne D, Macchiavelli AO, Cline D, Smith JF, Chakrawarthy RS, Cromaz M, Fallon P, Freeman SJ, Gelletly W, Gorgen A, Hayes A, Hua H, Langdown SD, Lee IY, Pearson CJ, Podolyak Z, Teng R, Valiente-Dobon JJ (2004) Structural evolution in the (N,Z,I-pi) coordinate frame for A-100, NUCLEAR PHYSICS, LARGE AND SMALL 726 pp. 157-162 AMER INST PHYSICS
Cullen DM, Pattison LK, Smith JF, Fletcher AM, Walker PM, El-Masri HM, Podolyak Z, Wood RJ, Scholey C, Wheldon C, Mukherjee G, Balabanski D, Djongolov M, Dalsgaard T, Thisgaard H, Sletten G, Kondev F, Jenkins D, Dracoulis GD, Lane GJ, Lee IY, Macchiavelli AO, Xu F (2003) High-spin states, lifetime measurements and isomers in Os-181, NUCLEAR PHYSICS A 728 (3-4) pp. 287-338 ELSEVIER SCIENCE BV
Watanabe H, Lorusso G, Nishimura S, Xu ZY, Sumikama T, Söderström PA, Doornenbal P, Browne F, Gey G, Jung HS, Taprogge J, Vajta Z, Wu J, Yagi A, Baba H, Benzoni G, Chae KY, Crespi FCL, Fukuda N, Gernhäuser R, Inabe N, Isobe T, Jungclaus A, Kameda D, Kim GD, Kim YK, Kojouharov I, Kondev FG, Kubo T, Kurz N, Kwon YK, Lane GJ, Li Z, Moon CB, Montaner-Pizá A, Moschner K, Naqvi F, Niikura M, Nishibata H, Nishimura D, Odahara A, Orlandi R, Patel Z, Podolyák Z, Sakurai H, Schaffner H, Simpson GS, Steiger K, Suzuki H, Takeda H, Wendt A, Yoshinaga K (2013) Isomers in Pd128 and Pd126: Evidence for a Robust Shell Closure at the Neutron Magic Number 82 in Exotic Palladium Isotopes, Physical Review Letters 111 (15)
The level structures of the very neutron-rich nuclei Pd128 and Pd126 have been investigated for the first time. In the r-process waiting-point nucleus Pd128, a new isomer with a half-life of 5.8(8) ¼s is proposed to have a spin and parity of 8+ and is associated with a maximally aligned configuration arising from the g9/2 proton subshell with seniority Å=2. For Pd126, two new isomers have been identified with half-lives of 0.33(4) and 0.44(3) ¼s. The yrast 2+ energy is much higher in Pd128 than in Pd126, while the level sequence below the 8+ isomer in Pd128 is similar to that in the N=82 isotone Cd130. The electric quadrupole transition that depopulates the 8+ isomer in Pd128 is more hindered than the corresponding transition in Cd130, as expected in the seniority scheme for a semimagic, spherical nucleus. These experimental findings indicate that the shell closure at the neutron number N=82 is fairly robust in the neutron-rich Pd isotopes. © 2013 American Physical Society.
Watanabe H, Sumikama T, Nishimura S, Yoshinaga K, Li Z, Miyashita Y, Yamaguchi K, Baba H, Berryman JS, Blasi N, Bracco A, Camera F, Chiba J, Doornenbal P, Go S, Hashimoto T, Hayakawa S, Hinke C, Ideguchi E, Isobe T, Ito Y, Jenkins DG, Kawada Y, Kobayashi N, Kondo Y, Krücken R, Kubono S, Lorusso G, Nakano T, Kurata-Nishimura M, Odahara A, Ong HJ, Ota S, Podolyák Z, Sakurai H, Scheit H, Shi Y, Steiger K, Steppenbeck D, Sugimoto K, Tajiri K, Takano S, Takashima A, Teranishi T, Wakabayashi Y, Walker PM, Wieland O, Xu FR, Yamaguchi H (2011) Low-lying level structure of the neutron-rich nucleus 109Nb: A possible oblate-shape isomer, Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 696 (3) pp. 186-190 Elsevier
El-Masri HM, Walker PM, Podolyak Z, Caamano M, Dracoulis GD, Byrne AP, Kibedi T, Baxter AM, Hazel J, Bruce AM, Orce JN, Emmanoulidis A, Cullen DM, Wheldon C (2003) High-K states in Re-180, ACTA PHYSICA POLONICA B 34 (4) pp. 2301-2304 ACTA PHYSICA POLONICA B, JAGELLONIAN UNIV, INST PHYSICS
Roberts OJ, Bruce AM, Regan PH, Podolyák Z, Townsley CM, Smith JF, Mulholland KF, Smith A (2014) A LaBr3: Ce fast-timing array for DESPEC at FAIR, Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 748 pp. 91-95
The design of a fast-timing ³-ray detection array aimed at measuring sub-nanosecond half-lives using LaBr3:Ce scintillation crystals is presented. This array will complement novel and existing charged particle and neutron detector arrays at the low-energy branch of a fragment separator (Super-FRS) to be built within the NuSTAR collaboration as part of the future Facility for Anti-proton and Ion Research (FAIR). The array will be used in conjunction with the Advanced Implantation Detector Array (AIDA), to measure implant-decay correlations. Monte-Carlo simulations have been performed to determine the design of the proposed fast-timing array around a localised implantation point. In particular, simulations were used to determine the full-energy peak efficiencies for single cylindrical, conical and 'hybrid' detector geometries, as well as complete array configurations of 'hybrid' and â?...1.5 in.×2 in. cylindrical crystals. Timing precision calculations were then used to determine the timing response for each configuration based on its simulated efficiency. An informed decision based on the simulated efficiencies and timing precision calculations allowed the optimum configuration for the array to be determined. © 2014 Elsevier B.V.
Morales AI, Benlliure J, Kurtukián-Nieto T, Schmidt KH, Verma S, Regan PH, Podolyák Z, Górska M, Pietri S, Kumar R, Casarejos E, Al-Dahan N, Algora A, Alkhomashi N, Álvarez-Pol H, Benzoni G, Blazhev A, Boutachkov P, Bruce AM, Cáceres LS, Cullen IJ, Denis Bacelar AM, Doornenbal P, Estévez-Aguado ME, Farrelly G, Fujita Y, Garnsworthy AB, Gelletly W, Gerl J, Grebosz J, Hoischen R, Kojouharov I, Kurz N, Lalkovski S, Liu Z, Mihai C, Molina F, Mücher D, Rubio B, Shaffner H, Steer SJ, Tamii A, Tashenov S, Valiente-Dobón JJ, Walker PM, Wollersheim HJ, Woods PJ (2014) Half-life systematics across the N=126 shell closure: role of first-forbidden transitions in the ² decay of heavy neutron-rich nuclei., Phys Rev Lett 113 (2)
This Letter reports on a systematic study of ²-decay half-lives of neutron-rich nuclei around doubly magic (208)Pb. The lifetimes of the 126-neutron shell isotone (204)Pt and the neighboring (200-202)Ir, (203)Pt, (204)Au are presented together with other 19 half-lives measured during the "stopped beam" campaign of the rare isotope investigations at GSI collaboration. The results constrain the main nuclear theories used in calculations of r-process nucleosynthesis. Predictions based on a statistical macroscopic description of the first-forbidden ² strength reveal significant deviations for most of the nuclei with N
Soderstrom P-A, Nyberg J, Regan PH, Algora A, de Angelis G, Ashley SF, Aydin S, Bazzacco D, Casperson RJ, Catford WN, Cederkall J, Chapman R, Corradi L, Fahlander C, Farnea E, Fioretto E, Freeman SJ, Gadea A, Gelletly W, Gottardo A, Grodner E, He CY, Jones GA, Keyes K, Labiche M, Liang X, Liu Z, Lunardi S, Marginean N, Mason P, Menegazzo R, Mengoni D, Montagnoli G, Napoli D, Ollier J, Pietri S, Podolyak Z, Pollarolo G, Recchia F, Sahin E, Scarlassara F, Silvestri R, Smith JF, Spohr K-M, Steer SJ, Stefanini AM, Szilner S, Thompson NJ, Tveten GM, Ur CA, Valiente-Dobon JJ, Werner V, Williams SJ, Xu FR, Zhu JY (2010) Spectroscopy of neutron-rich Dy-168,Dy-170: Yrast band evolution close to the NpNn valence maximum, PHYSICAL REVIEW C 81 (3) ARTN 034310 AMER PHYSICAL SOC
Regan PH, Alkhomashi N, Al-Dahan N, PodolyÁk Z, Pietri SB, Steer SJ, Garnsworthy AB, Suckling EB, Stevenson PD, Farrelly G, Cullen IJ, Gelletly W, Walker PM, Benlliure J, Morales AI, Casajeros E, Estevez ME, Gerl J, GÓrska M, Wollersheim HJ, Boutachkov P, Tashenov S, Kojouharov I, Schaffner H, Kurz N, Kumar R, Rubio B, Algora A, Molina F, Grebosz J, Benzoni G, MÜcher D, Bruce AM, Bacelar AMD, Lalkovski S, Fujita Y, Tamii A, Hoischen R, Liu Z, Woods PJ, Mihai C, Valiente-DobÓn JJ (2008) First results with the rising active stopper, International Journal of Modern Physics E 17 (SUPPL. 1) pp. 8-20
This paper outlines some of the physics opportunities available with the GSI RISING active stopper and presents preliminary results from an experiment aimed at performing beta-delayed gamma-ray spectroscopic studies in heavy-neutron-rich nuclei produced following the projectile fragmentation of a 1 GeV per nucleon 208Pb primary beam. The energy response of the silicon active stopping detector for both heavy secondary fragments and beta-particles is demonstrated and preliminary results on the decays of neutron-rich Tantalum (Ta) to Tungsten (W) isotopes are presented as examples of the potential of this technique to allow new structural studies in hitherto experimentally unreachable heavy, neutron-rich nuclei. The resulting spectral information inferred from excited states in the tungsten daughter nuclei are compared with results from axially symmetric HartreeFock calculations of the nuclear shape and suggest a change in ground state structure for the N = 116 isotone 190W compared to the lighter isotopes of this element. © 2008 World Scientific Publishing Company.
Tain JL, Valencia E, Algora A, Agramunt J, Rubio B, Rice S, Gelletly W, Regan P, Zakari-Issoufou A-A, Fallot M, Porta A, Rissanen J, Eronen T, Aysto J, Batist L, Bowry M, Bui VM, Caballero-Folch R, Cano-Ott D, Elomaa V-V, Estevez E, Farrelly GF, Garcia AR, Gomez-Hornillos B, Gorlychev V, Hakala J, Jordan MD, Jokinen A, Kolhinen VS, Kondev FG, Martinez T, Mendoza E, Moore I, Penttila H, Podolyak Z, Reponen M, Sonnenschein V, Sonzogni AA (2015) Enhanced gamma-Ray Emission from Neutron Unbound States Populated in beta Decay, PHYSICAL REVIEW LETTERS 115 (6) ARTN 062502 AMER PHYSICAL SOC
Medina NH, Oliveira JRB, Cybulska EW, Rao MN, Ribas RV, Rizzutto MA, Seale WA, Espinoza-Quinones FR, Bazzacco D, Brandolini F, Lunardi S, Petrache CM, Podolyak Z, Rossi-Alvarez C, Soramel F, Ur CA, Cardona MA, de Angelis G, Napoli DR, Spolaore P, Gadea A, De Acuna D, De Poli M, Farnea E, Foltescu D, Ionescu-Bujor M, Iordachescu A (2004) First allowed bandcrossing in neutron deficient nucleus Tb-141, BRAZILIAN JOURNAL OF PHYSICS 34 (3A) pp. 1002-1004 SPRINGER
Mandal S, Gerl J, Geissel H, Hauschild K, Hellstrom M, Janas Z, Kojouharov I, Kopatch Y, Lemmon RC, Mayet P, Podolyak Z, Regan PH, Schaffner H, Schlegel C, Simpson J, Wollersheim HJ (2001) Gamma-ray spectroscopy with relativistic exotic heavy-ions, PRAMANA-JOURNAL OF PHYSICS 57 (1) pp. 161-164 INDIAN ACADEMY SCIENCES
Sumikama T, Yoshinaga K, Watanabe H, Nishimura S, Miyashita Y, Yamaguchi K, Sugimoto K, Chiba J, Li Z, Baba H, Berryman JS, Blasi N, Bracco A, Camera F, Doornenbal P, Go S, Hashimoto T, Hayakawa S, Hinke C, Ideguchi E, Isobe T, Ito Y, Jenkins DG, Kawada Y, Kobayashi N, Kondo Y, Kruecken R, Kubono S, Lorusso G, Nakano T, Kurata-Nishimura M, Odahara A, Ong HJ, Ota S, Podolyak Z, Sakurai H, Scheit H, Steiger K, Steppenbeck D, Takano S, Takashima A, Tajiri K, Teranishi T, Wakabayashi Y, Walker PM, Wieland O, Yamaguchi H (2011) Structural Evolution in the Neutron-Rich Nuclei Zr-106 and Zr-108, PHYSICAL REVIEW LETTERS 106 (20) ARTN 202501 AMER PHYSICAL SOC
Burger A, Saito T, Al-Khatib A, Banu A, Beck T, Becker F, Bednarczyk P, Benzoni G, Bracco A, Bringel P, Camera F, Clement E, Doornenbal P, Geissel H, Gerl J, Gorska M, Gorgen A, Grawe H, Grebosz J, Hammond G, Hellstrom M, Hubel H, Kavatsyuk M, Kavatsyuk O, Kmiecik M, Kojouharov I, Kurz N, Lozeva R, Maj A, Mandal S, Meczynski W, Mehta D, Million B, Muralithar S, Neusser A, Podolyak Z, Reddy TS, Reiter P, Saito N, Schaffner H, Singh AK, Weick H, Wieland O, Wheldon C, Winkler M, Wollersheim HJ (2005) Relativistic coulomb excitation of Cr-54,Cr-56,Cr-58, ACTA PHYSICA POLONICA B 36 (4) pp. 1249-1252 ACTA PHYSICA POLONICA B, JAGELLONIAN UNIV, INST PHYSICS
Jones GA, Podolyak Z, Walker PM, Regan PH, de Angelis G, Axiotis M, Bazzacco D, Bizzeti PG, Brandolini F, Broda R, Bucurescu D, Farnea E, Gelletly W, Gadea A, Ionescu-Bujor M, Iordachescu A, Kroll T, Langdown SD, Lunardi S, Marginean N, Martinez T, Medina NH, Quintana B, Rubio B, Ur CA, Valiente-Dobon JJ, Williams SJ, Zhang YH (2005) Population of yrast states in Os-191 using deep-inelastic reactions, JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS 31 (10) pp. S1891-S1894 IOP PUBLISHING LTD
Caamano M, Walker PM, Regan PH, Pearson CJ, Podolyak Z, Mayet P, Gerl J, Schlegel C, Hellstrom M, Mineva M, Pfutzner M (2001) Isomeric decays in Pt-200, ACTA PHYSICA POLONICA B 32 (3) pp. 763-766 ACTA PHYSICA POLONICA B, JAGELLONIAN UNIV, INST PHYSICS
Petrache CM, Bazzacco D, Falconi G, Lunardi S, Maglione E, Menegazzo R, Alvarez CR, Venturelli R, Viesti G, de Angelis G, De Poli M, Fahlander C, Farnea E, Gadea A, Maron G, Napoli DR, Podolyak Z, Perries S, Astier A, Ducroux L, Meyer M, Redon N, Bracco A, Frattini S, Leoni S, Deloncle I, Porquet MG, Marginean N, Ur CA, Cederwall B, Johnson A, Wyss R (1999) Decay out of the highly-deformed bands in the A=130 mass region and experimental Delta(v) for Nd nuclei, NUCLEAR STRUCTURE 98 481 pp. 368-382 AMER INST PHYSICS
Podolyak Z, Walker P, Cullen D, Dracoulis G, Fallon P, Fairchild B, Hauschild K, Macchiavelli A, McNabb D, Savelius A, Ward D, Wheldon C (2000) Search for very long-lived isomers in the hafnium-tungsten region, PHYSICAL REVIEW C 62 (3) ARTN 03430 AMERICAN PHYSICAL SOC
Shestakova I, Mukherjee G, Chowdhury P, D'Alarcao R, Pearson CJ, Podolyak Z, Walker PM, Wheldon C, Cullen DM, Ahmad I, Carpenter MP, Janssens RVF, Khoo TL, Kondev FG, Lister CJ, Seweryniak D, Wiedenhoever I (2001) Yrast three-quasiparticle K isomers in neutron-rich Hf-181, PHYSICAL REVIEW C 64 (5) ARTN 054307 AMERICAN PHYSICAL SOC
Jones GA, Podolyak Z, Schunck N, Walker PM, De Angelis G, Zhang YH, Axiotis M, Bazzacco D, Bizzeti PG, Brandolini F, Broda R, Bucurescu D, Farnea E, Gelletly W, Gadea A, Ionescu-Bujor M, Iordachescu A, Kroll T, Langdown SD, Lunardi S, Marginean N, Martinez T, Medina NH, Quintana B, Regan PH, Rubio B, Ur CA, Valiente-Dobon JJ, Williams SJ (2005) Oblate collectivity in the yrast structure of Pt-194, ACTA PHYSICA POLONICA B 36 (4) pp. 1323-1327 ACTA PHYSICA POLONICA B, JAGELLONIAN UNIV, INST PHYSICS
Regan PH, Wheldon C, Yamamoto AD, Valiente-Dobon JJ, Cline D, Wu CY, Macchiavelli AO, Xu FR, Smith JF, Andgren K, Chakrawarthy RS, Cromaz M, Fallon P, Freeman SJ, Gorgen A, Hayes A, Hua H, Langdown SD, Lee IY, Pearson CJ, Podolyak Z, Teng R (2005) Vibrational and rotational sequences in Mo-101 and Ru-103,Ru-4 studied via multinucleon transfer reactions, ACTA PHYSICA POLONICA B 36 (4) pp. 1313-1322 ACTA PHYSICA POLONICA B, JAGELLONIAN UNIV, INST PHYSICS
Sohler D, Stanoiu M, Dombradi Z, Azaiez F, Brown BA, Saint-Laurent MG, Sorlin O, Penionzhkevich Y-E, Achouri NL, Angelique JC, Belleguic M, Borcea C, Bourgeois C, Daugas JM, De Oliveira-Santos F, Dlouhy Z, Donzaud C, Duprat J, Elekes Z, Grevy S, Guillemaud-Mueller D, Ibrahim F, Leenhardt S, Lewitowicz M, Lopez-Jimenez MJ, Lukyanov SM, Mittig W, Mrazek J, Negoita F, Podolyak Z, Porquet MG, Pougheon F, Roussel-Chomaz P, Savajols H, Sletten G, Sobolev Y, Stodel C, Timar J (2008) In-beam gamma-ray spectroscopy of the neutron-rich nitrogen isotopes (19-22)N, PHYSICAL REVIEW C 77 (4) ARTN 044303 AMER PHYSICAL SOC
Pietri S, Rega PH, Podolyak Z, Jungclaus A, Pfutzner M, Rudolph D, Garnsworthy AB, Steer SJ, Hoischen R, Gorska M, Gerl J, Wollersheim HJ, Kojouharov I, Schaffner H, Grebosz J, Becker F, Bednarczyk P, Caceres L, Doornenbal P, Geissel H, Kelic A, Kurz N, Montes F, Prokopowicz W, Saito T, Tashenov S, Werner-Malento E, Gelletly W (2007) Experimental details of the Stopped Beam RISING campaign, EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS 150 pp. 319-320 EDP SCIENCES S A
Deo AY, Podolyak Z, Walker PM, Algora A, Rubio B, Agramunt J, Fraile LM, Al-Dahan N, Alkhomashi N, Briz JA, Estevez E, Farrelly G, Gelletly W, Herlert A, Koester U, Maira A, Singla S (2010) Structures of Po-201 and Rn-205 from EC/beta(+)-decay studies, PHYSICAL REVIEW C 81 (2) ARTN 024322 AMER PHYSICAL SOC
Mason PJR, Alharbi T, Regan PH, Marginean N, Podolyak Z, Simpson EC, Alkhomashi N, Bender PC, Bowry M, Bostan M, Bucurescu D, Bruce AM, Cata-Danil G, Cata-Danil I, Chakrabarti R, Deleanu D, Detistov P, Erduran MN, Filipescu D, Garg U, Glodariu T, Ghita D, Ghugre SS, Kusoglu A, Marginean R, Mihai C, Nakhostin M, Negret A, Pascu S, Triguero CR, Sava T, Sinha AK, Stroe L, Suliman G, Zamfir NV (2012) Half-life of the I-pi=4(-) intruder state in P-34: M2 transition strengths approaching the island of inversion, PHYSICAL REVIEW C 85 (6) ARTN 064303 AMER PHYSICAL SOC
Lalkovski S, Bruce AM, Jungclaus A, Górska M, Pfützner M, Cáceres L, Naqvi F, Pietri S, Podolyák Z, Simpson GS, Andgren K, Bednarczyk P, Beck T, Benlliure J, Benzoni G, Casarejos E, Cederwall B, Crespi FCL, Cuenca-García JJ, Cullen IJ, Denis Bacelar AM, Detistov P, Doornenbal P, Farrelly GF, Garnsworthy AB, Geissel H, Gelletly W, Gerl J, Grebosz J, Hadinia B, Hellström M, Hinke C, Hoischen R, Ilie G, Jaworski G, Jolie J, Khaplanov A, Kisyov S, Kmiecik M, Kojouharov I, Kumar R, Kurz N, Maj A, Mandal S, Modamio V, Montes F, Myalski S, Palacz M, Prokopowicz W, Reiter P, Regan PH, Rudolph D, Schaffner H, Sohler D, Steer SJ, Tashenov S, Walker J, Walker PM, Weick H, Werner-Malento E, Wieland O, Wollersheim HJ, Zhekova M (2013) Core-coupled states and split proton-neutron quasiparticle multiplets in 122-126Ag, Physical Review C - Nuclear Physics 87 (3)
Neutron-rich silver isotopes were populated in the fragmentation of a 136Xe beam and the relativistic fission of 238U. The fragments were mass analyzed with the GSI Fragment Separator and subsequently implanted into a passive stopper. Isomeric transitions were detected by 105 high-purity germanium detectors. Eight isomeric states were observed in 122-126Ag nuclei. The level schemes of 122,123,125Ag were revised and extended with isomeric transitions being observed for the first time. The excited states in the odd-mass silver isotopes are interpreted as core-coupled states. The isomeric states in the even-mass silver isotopes are discussed in the framework of the proton-neutron split multiplets. The results of shell-model calculations, performed for the most neutron-rich silver nuclei are compared to the experimental data. © 2013 American Physical Society.
Hinke CB, Boehmer M, Boutachkov P, Faestermann T, Geissel H, Gerl J, Gernhaeuser R, Gorska M, Gottardo A, Grawe H, Grebosz JL, Kruecken R, Kurz N, Liu Z, Maier L, Nowacki F, Pietri S, Podolyak Z, Sieja K, Steiger K, Straub K, Weick H, Wollersheim H-J, Woods PJ, Al-Dahan N, Alkhomashi N, Atac A, Blazhev A, Braun NF, Celikovic IT, Davinson T, Dillmann I, Domingo-Pardo C, Doornenbal PC, de France G, Farrelly GF, Farinon F, Goel N, Habermann TC, Hoischen R, Janik R, Karny M, Kaskas A, Kojouharov IM, Kroell T, Litvinov Y, Myalski S, Nebel F, Nishimura S, Nociforo C, Nyberg J, Parikh AR, Prochazka A, Regan PH, Rigollet C, Schaffner H, Scheidenberger C, Schwertel S, Soederstroem P-A, Steer SJ, Stolz A, Strmen P (2012) Superallowed Gamow-Teller decay of the doubly magic nucleus Sn-100, NATURE 486 (7403) pp. 341-345 NATURE PUBLISHING GROUP
Wendt A, Taprogge J, Reiter P, Golubev P, Grawe H, Pietri S, Boutachkov P, Algora A, Ameil F, Bentley MA, Blazhev A, Bloor D, Bondili NS, Bowry M, Bracco A, Braun N, Camera F, Cederkäll J, Crespi F, De La Salle A, Dijulio D, Doornenbal P, Geibel K, Gellanki J, Gerl J, Grbosz J, Guastalla G, Habermann T, Hackstein M, Hoischen R, Jungclaus A, Merchán E, Million B, Morales A, Moschner K, Podolyák Z, Pietralla N, Ralet D, Reese M, Rudolph D, Scruton L, Siebeck B, Warr N, Wieland O, Wollersheim HJ (2014) Isospin symmetry in the sd shell: Transition strengths in the neutron-deficient sd shell nucleus Ar 33, Physical Review C - Nuclear Physics 90 (5)
© 2014 American Physical Society.Reduced transition strengths of the deexciting transitions from the first two excited states in Ar33 were measured in a relativistic Coulomb excitation experiment at the GSI Helmholtz center. The radioactive ion beam was produced by fragmentation of a primary Ar36 beam on a Be9 target followed by the selection of the reaction product of interest via the GSI Fragment Separator. The Ar33 beam hit a secondary Au197 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 ³-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 Ar33 the reduced transition strengths have been determined. With these first results the Tz=-3/2 nucleus Ar33 is now, together with Na21 (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.
Chowdhury P, Shestakova I, D'Alarcao R, Pearson CJ, Podolyak Z, Walker PM, Wheldon C, Cullen DM, Ahmad I, Carpenter MP, Janssens RVF, Khoo TL, Kondev FG, Lister CJ, Seweryniak D, Wiedenhoever I (2001) Harvesting new isomers in neutron-rich hafnium nuclei, NUCLEAR PHYSICS A 682 pp. 65C-70C ELSEVIER SCIENCE BV
Petrache CM, Wyss R, Podolyak Z, Bazzacco D, de Angelis G, de Acuna D, De Poli M, Dewald A, Farnea E, Gableske J, Gadea A, Lunardi S, Napoli DR, Rao MN, Alvarez CR, Scanferla T, Ur CA, Venturelli R, von Brentano P, Zhu LH (1998) Lifetime measurements of highly deformed bands in Nd-134,Nd-135 and Ce-131, PHYSICAL REVIEW C 57 (1) pp. R10-R14 AMERICAN PHYSICAL SOC
Detistov P, Balabanski DL, Podolyak Z (2007) Simulation of the electromagnetic background radiation for the rising experimental set-up, ACTA PHYSICA POLONICA B 38 (4) pp. 1287-1292 ACTA PHYSICA POLONICA B, JAGELLONIAN UNIV, INST PHYSICS
Jones GA, Regan PH, Podolyak Z, Yoshinaga N, Higashiyama K, de Angelis G, Zhang YH, Gadea A, Ur CA, Axiotis M, Bazzacco D, Bucurescu D, Farnea E, Gelletly W, Ionescu-Bujor M, Iordachescu A, Kroell T, Langdown SD, Lenzi S, Lunardi S, Marginean N, Martinez T, Medina NH, Menegazzo R, Napoli DR, Quintana B, Rubio B, Rusu C, Schwenger R, Tonev D, Doban JJV, von Oertzen W (2007) Yrast studies of (80,82)Se using deep-inelastic reactions, PHYSICAL REVIEW C 76 (5) ARTN 054317 AMER PHYSICAL SOC
Pfutzner M, Regan PH, Walker PM, Caamano M, Gerl J, Hellstrom M, Mayet P, Schmidt KH, Podolyak Z, Mineva MN, Aprahamian A, Benlliure J, Bruce AM, Butler PA, Gil DC, Cullen DM, Doring J, Enquist T, Fox C, Garces Narro J, Geissel H, Gelletly W, Giovinazzo J, Gorska M, Grawe H, Grzywacz R, Kleinbohl A, Korten W, Lewitowicz M, Lucas R, Mach H, O'Leary CD, De Oliveira F, Pearson CJ, Rejmund F, Rejmund M, Sawicka M, Schaffner H, Schlegel C, Schmidt K, Theisen C, Vives F, Warner DD, Wheldon C, Wollersheim HJ, Wooding S (2002) Angular momentum population in the fragmentation of Pb-208 at 1 GeV/nucleon, PHYSICAL REVIEW C 65 (6) ARTN 064604 AMERICAN PHYSICAL SOC
Alvarez CR, Vretenar D, Podolyak Z, Bazzacco D, Bonsignori G, Brandolini F, Brant S, deAngelis G, DePoli M, IonescuBujor M, Li Y, Lunardi S, Medina NH, Petrache CM (1996) Excited states in Sm-139 described with the interacting boson model plus broken pairs, PHYSICAL REVIEW C 54 (1) pp. 57-71 AMERICAN PHYSICAL SOC
Podolyak Z, Bizzeti PG, Bizzeti-Sona AM, Lunardi S, Bazzacco D, Dewald A, Algora A, de Angelis G, Farnea E, Gadea A, Kasemann DR, Klug T, Kroll T, Lenzi S, Napoli DR, Petrache CM, Peusquens R, Alvarez CR, Martinez T, Ur CA (2003) Lifetime measurements in Gd-148, EUROPEAN PHYSICAL JOURNAL A 17 (1) pp. 29-36 SPRINGER-VERLAG
Régis JM, Jolie J, Saed-Samii N, Warr N, Pfeiffer M, Blanc A, Jentschel M, Köster U, Mutti P, Soldner T, Simpson GS, Drouet F, Vancraeyenest A, De France G, Clément E, Stezowski O, Ur CA, Urban W, Regan PH, Podolyák Z, Larijani C, Townsley C, Carroll R, Wilson E, Fraile LM, Mach H, Paziy V, Olaizola B, Vedia V, Bruce AM, Roberts OJ, Smith JF, Kröll T, Hartig AL, Ignatov A, Ilieva S, Thürauf M, Lalkovski S, Ivanova D, Kisyov S, Korten W, Salsac MD, ZieliDska M, MYrginean N, GhitY DG, LicY R, Petrache CM, Astier A, Leguillon R (2014) B(E2; 21+ ’ 01+) value in Kr 90, Physical Review C - Nuclear Physics 90 (6)
© 2014 American Physical Society.A smooth onset of collectivity in 88,92,94,96Kr has been determined from reported B(E2;21+’01+) and E(21+) values. This is in contrast to the sudden onset in even-even Zr, Mo, and Sr isotopes. Our objective was to complete the systematics by determining the B(E2;21+’01+) value in Kr90, which was produced by cold-neutron-induced fission of 235U. The lifetime of the 21+ state in Kr90 was measured via the electronic ³-³ timing technique using the EXILL and FATIMA spectrometers. Based on the measured mean lifetime of Ä = 15(10) ps, the B(E2;21+’01+) value of 13-5+26 W.u. in Kr90 is determined for the first time and the smooth onset of deformation in the even-even Kr isotopes beyond neutron number N=50 is confirmed.
Rudolph D, Hoischen R, Hellstrom M, Pietri S, Podolyak Z, Regan PH, Garnsworthy AB, Steer SJ, Becker F, Bednarczyk P, Caceres L, Doornenbal P, Gerl J, Gorska M, Grebosz J, Kojouharov I, Kurz N, Prokopowicz W, Schaffner H, Wollersheim HJ, Andersson L-L, Atanasova L, Balabanski DL, Bentley MA, Blazhev A, Brandau C, Brown JR, Fahlander C, Johansson EK, Jungclaus A, Lenzi SM (2008) Isospin symmetry and proton decay: Identification of the 10(+) isomer in (54)Ni, PHYSICAL REVIEW C 78 (2) ARTN 021301 AMER PHYSICAL SOC
Bazzacco D, Bellato M, Kroll T, Quintana B, Spolaore P, Fanzago F, Napoli DR, Gadea A, Farnea E, Podolyak Z, Camera F, Million B, Wieland O, Geraci A, Pullia A, Ripamonti G (2000) MARS: A project for an advanced gamma-ray array., ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY 219 pp. U80-U81 AMER CHEMICAL SOC
Roberts OJ, Bruce AM, Patel Z, Podolyák Z, Regan PH, Townsley CM, Smith A, Mulholland KF, Smith JF (2013) Development of a LaBr3(Ce) Fast-timing Array for FAIR, EPJ Web of Conferences 63
A ³-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
Orce N, Bruce AM, Emmanouilidis A, Byrne AP, Dracoulis GD, Hazel JC, Kibedi T, Walker PM, Podolyak Z, Caamano M, El-Masri H, Wheldon C, Cullen DM (2002) Study of the K-pi=8(-) isomeric decay in the N=74 isotone Xe-128, PROGRESS OF THEORETICAL PHYSICS SUPPLEMENT (146) pp. 611-612 PROGRESS THEORETICAL PHYSICS PUBLICATION OFFICE
Stanoiu M, Azaiez F, Dombradi Z, Sorlin O, Brown BA, Belleguic M, Sohler D, Saint Laurent MG, Lopez-Jimenez MJ, Penionzhkevich YE, Sletten G, Achouri NL, Angelique JC, Becker F, Borcea C, Bourgeois C, Bracco A, Daugas JM, Dlouhy Z, Donzaud C, Duprat J, Fulop Z, Guillemaud-Mueller D, Grevy S, Ibrahim F, Kerek A, Krasznahorkay A, Lewitowicz M, Leenhardt S, Lukyanov S, Mayet P, Mandal S, van der Marel H, Mittig W, Mrazek J, Negoita F, De Oliveira-Santos F, Podolyak Z, Pougheon F, Porquet MG, Roussel-Chomaz P, Savajols H, Sobolev Y, Stodel C, Timar J, Yamamoto A (2004) N=14 and 16 shell gaps in neutron-rich oxygen isotopes, PHYSICAL REVIEW C 69 (3) ARTN 034312 AMERICAN PHYSICAL SOC
Jungclaus A, Caceres L, Gorska M, Pfutzner M, Pietri S, Werner-Malento E, Grawe H, Langanke K, Martinez-Pinedo G, Nowacki F, Poves A, Cuenca-Garcia JJ, Rudolph D, Podolyak Z, Regan PH, Detistov P, Lalkovski S, Modamio V, Walker J, Bednarczyk P, Doornenbal P, Geissel H, Gerl J, Grebosz J, Kojouharov I, Kurz N, Prokopowicz W, Schaffner H, Wollersheim HJ, Andgren K, Benlliure J, Benzoni G, Bruce AM, Casarejos E, Cederwall B, Crespi FCL, Hadinia B, Hellstrom M, Hoischen R, Ilie G, Jolie J, Khaplanov A, Kmiecik M, Kumar R, Maj A, Mandal S, Montes F, Myalski S, Simpson GS, Steer SJ, Tashenov S, Wieland O (2007) Observation of isomeric decays in the r-process waiting-point nucleus Cd-130(82), PHYSICAL REVIEW LETTERS 99 (13) ARTN 132501 AMER PHYSICAL SOC
Steer SJ, Podolyak Z, Pietri S, Regan PH, Rudolph D, Werner-Malento E, Garnsworthy AB, Hoischen R, Gorska M, Gerl J, Wollersheim HJ, Becker F, Bednarczyk P, Caceres L, Doornenbal P, Geissel H, Grebosz J, Kelic A, Kurz N, Montes F, Prokopowicz W, Saito T, Schaffner H, Tachenov S, Heinz A, Pfuetzner M, Kurtukian-Nieto T, Benzoni G, Jungclaus A, Balabanski DL, Brandau C, Bruce AM, Catford WN, Cullen IJ, Dombradi Z, Estevez E, Gelletly W, Ilie G, Jolie J, Jones GA, Kmiecik M, Kondev FG, Lalkovski S, Liu Z, Maj A, Myalski S, Shizuma T, Schwertel S, Walker PM, Wieland O (2007) Identification of isomeric states 'south' of Pb-208 via projectile fragmentation, ACTA PHYSICA POLONICA B 38 (4) pp. 1283-1286 ACTA PHYSICA POLONICA B, JAGELLONIAN UNIV, INST PHYSICS
Podolyak Z (2006) The high-resolution in-flight spectroscopy (HISPEC) project at fair, INTERNATIONAL JOURNAL OF MODERN PHYSICS E-NUCLEAR PHYSICS 15 (8) pp. 1967-1977 WORLD SCIENTIFIC PUBL CO PTE LTD
Bucurescu D, Ur CA, Lenzi SM, Napoli DR, Sanchez-Solano J, Bazzacco D, Brandolini F, de Angelis G, Farnea E, Gadea A, Lunardi S, Marginean N, Podolyak Z, Poves A, Alvarez CR (2003) Band terminations in the nucleus Ti-46, PHYSICAL REVIEW C 67 (3) ARTN 034306 AMERICAN PHYSICAL SOC
Lorusso G, Nishimura S, Xu ZY, Jungclaus A, Shimizu Y, Simpson GS, Soederstroem P-A, Watanabe H, Browne F, Doornenbal P, Gey G, Jung HS, Meyer B, Sumikama T, Taprogge J, Vajta Z, Wu J, Baba H, Benzoni G, Chae KY, Crespi FCL, Fukuda N, Gernhaeuser R, Inabe N, Isobe T, Kajino T, Kameda D, Kim GD, Kim Y-K, Kojouharov I, Kondev FG, Kubo T, Kurz N, Kwon YK, Lane GJ, Li Z, Montaner-Piza A, Moschner K, Naqvi F, Niikura M, Nishibata H, Odahara A, Orlandi R, Patel Z, Podolyak Z, Sakurai H, Schaffner H, Schury P, Shibagaki S, Steiger K, Suzuki H, Takeda H, Wendt A, Yagi A, Yoshinaga K (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, PHYSICAL REVIEW LETTERS 114 (19) ARTN 192501 AMER PHYSICAL SOC
Jolie J, Regis J-M, Wilmsen D, Ahmed S, Pfeiffer M, Saed-Samii N, Warr N, Blanc A, Jentschel M, Koester U, Mutti P, Soldner T, Simpson G, De France G, Urban W, Drouet F, Vancraeyenest A, Baczyk P, Czerwinski M, Korgul A, Mazzocchi C, Rzaca-Urban T, Bruce A, Roberts OJ, Fraile LM, Mach H, Paziy V, Ignatov A, Ilieva S, Kroell T, Scheck M, Thuerauf M, Ivanova D, Kisyov S, Lalkovski S, Podolyak Z, Regan PH, Korten W, Zielinska M, Salsac MD, Habs D, Thirolf PG, Ur CA, Bernards C, Casten RF, Cooper N, Werner V, Cakirli RB, Leoni S, Benzoni G, Bocchi G, Bottoni S, Crespi FCL, Fornal B, Cieplicka N, Szpak B, Petrache CM, Leguillon R, John R, Lorenz C, Massarczyk R, Schwengner R, Curien D, Lozeva R, Sengele L, Marginean N, Lica R (2015) The (n,gamma) campaigns at EXILL, CGS15 - CAPTURE GAMMA-RAY SPECTROSCOPY AND RELATED TOPICS 93 E D P SCIENCES
Browne F, Bruce AM, Sumikama T, Nishizuka I, Nishimura S, Doornenbal P, Lorusso G, Patel Z, Rice S, Sinclair L, Söderström PA, Watanabe H, Wu J, Xu ZY, Baba H, Chiga N, Carroll R, Daido R, Didierjean F, Fang Y, Gey G, Ideguchi E, Inabe N, Isobe T, Kameda D, Kojouharov I, Kurz N, Kubo T, Lalkovski S, Li Z, Lozeva R, Naoki N, Nishibata H, Odahara A, Podolyák Z, Regan PH, Roberts OJ, Sakurai H, Schaffner H, Simpson GS, Suzuki H, Takeda H, Tanaka M, Taprogge J, Werner V, Wieland O, Yagi A (2015) Gamma-ray spectroscopy in the vicinity of <sup>108</sup>zr, Acta Physica Polonica B 46 (3) pp. 721-724
The half-lives of 2+1 states were measured for 102,104Zr and 106,108Mo to test a new implementation of a LaBr3(Ce) array at the RIBF, RIKEN, Japan. The nuclei of interest were produced through the fission of a 345 MeV/nucleon 238U beam and selected by the BigRIPS separator. Fission fragments were implanted into the WAS3ABi active stopper, surrounding which, 18 LaBr3(Ce) detectors provided fast ³-ray detection. Timing between the LaBr3(Ce) array and plastic scintillators allowed for the measurement of half-lives of low-lying states. The preliminary results, which agree with literature values, are presented along with experimental details.
Caceres L, Lepailleur A, Sorlin O, Stanoiu M, Sohler D, Dombradi Z, Bogner SK, Brown BA, Hergert H, Holt JD, Schwenk A, Azaiez F, Bastin B, Borcea C, Borcea R, Bourgeois C, Elekes Z, Fueloep Z, Grevy S, Gaudefroy L, Grinyer GF, Guillemaud-Mueller D, Ibrahim F, Kerek A, Krasznahorkay A, Lewitowicz M, Lukyanov SM, Mrazek J, Negoita F, de Oliveira F, Penionzhkevich Y-E, Podolyak Z, Porquet MG, Rotaru F, Roussel-Chomaz P, Saint-Laurent MG, Savajols H, Sletten G, Thomas JC, Timar J, Timis C, Vajta Z (2015) Nuclear structure studies of F-24, PHYSICAL REVIEW C 92 (1) ARTN 014327 AMER PHYSICAL SOC
Wilson E, Podolyák Z, Fornal B, Janssens RVF, Bowry M, Bunce M, Carpenter MP, Chiara CJ, Cieplicka N, Deo AY, Dracoulis GD, Grawe H, Hoffman CR, Kempley RS, Kondev FG, Lane GJ, Lauritsen T, Reed MW, Regan PH, Rodríguez Triguero C, Szpak B, Walker PM, Zhu S (2013) Core excitations across the neutron shell gap in 207Tl, Acta Physica Polonica B 44 (3) pp. 381-385
Deep-inelastic collisions of a 208Pb beam on a 208Pb target were performed using the ATLAS accelerator at Argonne National Laboratory. Prompt and delayed »-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 »-rays from its bettercharacterised reaction partner 209Bi. A number of new transitions were found in 207Tl.
Bowry M, Podolyák Z, Pietri S, Kurcewicz J, Bunce M, Regan PH, Farinon F, Geissel H, Nociforo C, Prochazka A, Weick H, Al-Dahan N, Alkhomashi N, Allegro PRP, Benlliure J, Benzoni G, Boutachkov P, Bruce AM, Denis Bacelar AM, Farrelly GF, Gerl J, Górska M, Gottardo A, Gr)bosz J, Gregor N, Janik R, Knöbel R, Kojouharov I, Kubo T, Kurz N, Litvinov YA, Merchan E, Mukha I, Naqvi F, Pfeiffer B, Pfützner M, Plaß W, Pomorski M, Riese B, Ricciardi MV, Schmidt KH, Schaffner H, Scheidenberger C, Simpson EC, Sitar B, Spiller P, Stadlmann J, Strmen P, Sun B, Tanihata I, Terashima S, Valiente Dobón JJ, Winfield JS, Wollersheim HJ, Woods PJ (2013) Population of high-spin isomeric states following fragmentation of 238U, Physical Review C - Nuclear Physics 88 (2)
Isomeric ratios have been determined for 23 metastable states identified in AH200 nuclei from Pt to Rn near the valley of stability following fragmentation of 238U. This includes high-spin states with angular momenta ranging from (39/2) to 25. The experimental results are discussed together with those of similar experiments performed in this mass region. Isomeric ratios are compared with theoretical predictions where the angular momentum of the fragment arises purely due to the angular momentum of nucleons removed from the projectile. The theoretical yield of low-spin states is generally overestimated. In these cases the assumption of 100% feeding of the isomer may require modification. However, the yield of high-spin isomeric states [Im e (39/2)] is significantly underestimated and highlights the requirement for a more complete theoretical framework in relation to the generation of fragment angular momentum. The enhanced population of high-spin states reported here is advantageous to future studies involving isomeric beams at fragmentation facilities such as the Rikagaku Kenkyusho RI Beam Factory (Japan) and next-generation facilities at the Facility for Antiproton and Ion Research (Germany) and Facility for Rare Isotope Beams (USA). © 2013 American Physical Society.
Alharbi T, Mason PJR, Regan PH, Mrginean N, Podolyák Z, Algora A, Alazemi N, Bruce AM, Britton R, Bunce MR, Bucurescu D, Cooper N, Deleanu D, Filipescu D, Gelletly W, Ghit D, Glodariu T, Ilie G, Kisyov S, Lintott J, Lalkovski S, Liddick S, Mihai C, Mulholland K, Mrginean R, Negret A, Nakhostin M, Roberts OJ, Rice S, Smith JF, Stroe L, Sava T, Townsley C, Wilson E, Werner V, Zhekova M, Zamfir NV (2012) Electromagnetic transition rate measurements in the N=80 isotone, 138Ce, Journal of Physics: Conference Series 381 (1)
A study of intrinsic state halflife measurements in the N=80 nucleus 138Ce has been made using the 130Te( 12C,4n) 138Ce fusion evaporation reaction at beam energy of 56 MeV. The fast-timing gamma-ray coincidence method was used with a mixed LaBr 3(Ce)-HPGe array to establish the lifetimes of the yrast 6 + state at 2294 keV, the I À=5 - state at 2218 keV, the I À=11 + state at 3943 keV and the 14 + state at that at 5312 keV, all of which are in the sub nanosecond regime. Reduced transition probabilities have been calculated for the electromagnetic decays from these states. © Published under licence by IOP Publishing Ltd.
Briz JA, Borge MJG, Maira A, Perea A, Tengblad O, Agramunt J, Algora A, Estevez E, Nacher E, Rubio B, Fraile LM, Deo A, Farrelly G, Gelletly W, Podolyak Z (2010) Conversion coefficients of the isomeric state in 72Br, AIP Conference Proceedings 1231 pp. 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.
Orce JN, Bruce AM, Emmanouilidis A, Byrne AP, Dracoulis GD, Kibedi T, Caamano M, El-Masri H, Pearson CJ, Podolyak Z, Stevenson PD, Walker PM, Xu FR, Cullen DM, Wheldon C (2006) Shape-driving effects in the triaxial nucleus, Xe-128, PHYSICAL REVIEW C 74 (3) ARTN 034318 AMERICAN PHYSICAL SOC
Sawicka M, Grzywacz R, Matea I, Grawe H, Pfutzner M, Daugas JM, Lewitowicz M, Balabanski DL, Becker F, Belier G, Bingham C, Borcea C, Bouchez E, Buta A, La Commara M, Dragulescu E, de France G, Georgiev G, Giovinazzo J, Gorska M, Hammache F, Hass M, Hellstrom M, Ibrahim F, Janas Z, Mach H, Mayet P, Meot V, Negoita F, Neyens G, Santos FD, Page RD, Perru O, Podolyak Z, Roig O, Rykaczewski KP, Saint-Laurent MG, Sauvestre JE, Sorlin O, Stanoiu M, Stefan I, Stodel C, Theisen C, Verney D, Zylicz J (2003) Low energy levels in Ni-72, PHYSICAL REVIEW C 68 (4) ARTN 044304 AMER PHYSICAL SOC
Nakhostin M, Podolyak Z, Regan PH, Walker PM (2010) A digital method for separation and reconstruction of pile-up events in germanium detectors, REVIEW OF SCIENTIFIC INSTRUMENTS 81 (10) ARTN 103507 AMER INST PHYSICS
Tain JL, Algora A, Agramunt J, Guadilla V, Jordan MD, Montaner-Piza A, Rubio B, Valencia E, Cano-Ott D, Gelletly W, Martinez T, Mendoza E, Podolyak Z, Regan P, Simpson J, Smith AJ, Strachan J (2015) A decay total absorption spectrometer for DESPEC at FAIR, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 803 pp. 36-46 ELSEVIER SCIENCE BV
Neyens G, Georgiev G, Grzywacz R, Hass M, Santos FD, Lewitowicz M, Balabanski DL, Bingham C, Borcea C, Coulier N, Coussement R, Daugas JM, Defrance G, Goldring G, Gorska M, Grawe H, O'Leary C, Macovei I, Mach H, Page R, Pfutzner M, Penionzkevich YE, Podolyak Z, Regan PH, Rykaczewski K, Sawicka M, Smirnova NA, Sobolev Y, Teughels S, Vyvey K (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, NUCLEAR PHYSICS A 701 pp. 403C-409C ELSEVIER SCIENCE BV
Soderstrom P-A, Recchia F, Nyberg J, Gadea A, Lenzi SM, Poves A, Atac A, Aydin S, Bazzacco D, Bednarczyk P, Bellato M, Birkenbach B, Bortolato D, Boston AJ, Boston HC, Bruyneel B, Bucurescu D, Calore E, Cederwall B, Charles L, Chavas J, Colosimo S, Crespi FCL, Cullen DM, de Angelis G, Desesquelles P, Dosme N, Duchene G, Eberth J, Farnea E, Filmer F, Gorgen A, Gottardo A, Grebosz J, Gulmini M, Hess H, Hughes TA, Jaworski G, Jolie J, Joshi P, Judson DS, Jungclaus A, Karkour N, Karolak M, Kempley RS, Khaplanov A, Korten W, Ljungvall J, Lunardi S, Maj A, Maron G, Meczynski W, Menegazzo R, Mengoni D, Michelagnoli C, Molini P, Napoli DR, Nolan PJ, Norman M, Obertelli A, Podolyak Z, Pullia A, Quintana B, Redon N, Regan PH, Reiter P, Robinson AP, Sahin E, Simpson J, Salsac MD, Smith JF, Stezowski O, Theisen C, Tonev D, Unsworth C, Ur CA, Valiente-Dobon JJ, Wiens A (2012) High-spin structure in K-40, PHYSICAL REVIEW C 86 (5) ARTN 054320 AMER PHYSICAL SOC
Podolyak Z (2010) PRESENT AND FUTURE OF HISPEC, ACTA PHYSICA POLONICA B 41 (2) pp. 493-503 POLISH ACAD SCIENCES INST PHYSICS
Tu XL, Mei B, Zhang YH, Xu HS, Litvinov YA, Huang WJ, Podolyak Z, Kelic-Heil A, Zhang W, Litvinov SA, Blaum K, Zhou XH, Shuai P, Wang M, Gao BS, Chen XC, Yuan YJ, Xia JW, Yang JC, Hu ZG, Ma XW, Sun BH, Yan XL, Mao RS, Sun ZY, Xiao GQ, Xu X, Walker PM, Yamaguchi T, Bosch F, Winckler N, Chen RJ, Xing YM, Fu CY, Liu DW, Zeng Q, Ge Z, Sun Y, Zhao HW, Zhao TC (2015) Study of projectile fragmentation reaction with isochronous mass spectrometry, PHYSICA SCRIPTA T166 ARTN 014009 IOP PUBLISHING LTD
Pietri S, Regan PH, Podolyak Z, Rudolph D, Steer S, Garnsworthy AB, Werner-Malento E, Hoischen R, Gorska M, Gerl J, Wollersheim HJ, Kojouharov I, Schaffner H, Becker F, Bednarczyk P, Caceres L, Doornenbal P, Geissel H, Grebosz J, Kelic A, Kurz N, Montes F, Prokopowicz W, Saito T, Tashenov S, Heinz A, Pfuetzner M, Kurtukian-Nieto T, Benzoni G, Hellstrom M, Jungclaus A, Simpson J, Andersson L-L, Atanasova L, Balabanski D, Bentley MA, Blank B, Blazhev A, Brandau C, Brown JR, Bruce AM, Camera F, Catford WN, Cullen IJ, Dombradi Z, Estevez E, Fahlander C, Gelletly W, Ilie G, Johansson EK, Jolie J, Jones GA, Kmiecik M, Kondev FG, Lalkovski S, Liu Z, Maj A, Myalski S, Shizuma T, Simons AJ, Schwertel S, Walker PM, Wieland O (2007) Recent results in fragmentation isomer spectroscopy with rising, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS 261 (1-2) pp. 1079-1083 ELSEVIER SCIENCE BV
Petrache CM, Podolyak Z, Bazzacco D, Lunardi S, Menegazzo R, Rao MN, Alvarez CR, Scanferla T, Ur CA, Venturelli R, de Angelis G, de Acuna D, De Poli M, Farnea E, Gadea A, Napoli DR, Dewald A, Gableske J, von Brentano P, Wyss R (1998) Deformation of highly deformed bands in Nd nuclei, NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA A-NUCLEI PARTICLES AND FIELDS 111 (6-7) pp. 657-661 EDITRICE COMPOSITORI BOLOGNA
Petrache CM, Sun Y, Bazzacco D, Lunardi S, Alvarez CR, Venturelli R, DeAcuna D, Maron G, Rao MN, Podolyak Z, Oliveira JRB (1996) Multiple dipole bands at prolate shapes in Nd-136 and their description through the projected shell model, PHYSICAL REVIEW C 53 (6) pp. R2581-R2585 AMERICAN PHYSICAL SOC
Chen L, Walker PM, Geissel H, Litvinov YA, Beckert K, Beller P, Bosch F, Boutin D, Caceres L, Carroll JJ, Cullen DM, Cullen IJ, Franzke B, Gerl J, Górska M, Jones GA, Kishada A, Knöbel R, Kozhuharov C, Kurcewicz J, Litvinov SA, Liu Z, Mandal S, Montes F, Münzenberg G, Nolden F, Ohtsubo T, Patyk Z, Plaß WR, Podolyák Z, Rigby S, Saito N, Saito T, Scheidenberger C, Simpson EC, Shindo M, Steck M, Sun B, Williams SJ, Weick H, Winkler M, Wollersheim HJ, Yamaguchi T (2013) Direct observation of long-lived isomers in Bi212, Physical Review Letters 110 (12)
Long-lived isomers in Bi212 have been studied following U238 projectile fragmentation at 670 MeV per nucleon. The fragmentation products were injected as highly charged ions into a storage ring, giving access to masses and half-lives. While the excitation energy of the first isomer of Bi212 was confirmed, the second isomer was observed at 1478(30) keV, in contrast to the previously accepted value of >1910 keV. It was also found to have an extended Lorentz-corrected in-ring half-life >30 min, compared to 7.0(3) min for the neutral atom. Both the energy and half-life differences can be understood as being due a substantial, though previously unrecognized, internal decay branch for neutral atoms. Earlier shell-model calculations are now found to give good agreement with the isomer excitation energy. Furthermore, these and new calculations predict the existence of states at slightly higher energy that could facilitate isomer deexcitation studies. © 2013 American Physical Society.
Valiente-Dobon JJ, Regan RH, Wheldon C, Wu CY, Yoshinaga N, Higashiyama K, Smith JF, Cline D, Chakrawarthy RS, Chapman R, Cromaz M, Fallon P, Freeman SJ, Gorgen A, Gelletly W, Hayes A, Hua H, Langdown SD, Lee IY, Liang X, Macchiavelli AO, Pearson CJ, Podolyak Z, Sletten G, Teng R, Ward D, Warner DD, Yamamoto AD (2004) Ba-136 studied via deep-inelastic collisions: Identification of the (vh(11/2))(10+)(-2) isomer, PHYSICAL REVIEW C 69 (2) ARTN 024316 AMERICAN PHYSICAL SOC
Rudolph D, Fahlander C, Algora A, Andreoiu C, Cardona R, Chandler C, de Angelis G, Farnea E, Gadea A, Narro JG, Nyberg J, Palacz M, Podolyak Z, Steinhardt T, Thelen O (2001) gamma-decay lifetime measurements in the second minimum of Cu-58, PHYSICAL REVIEW C 63 (2) ARTN 021301 AMERICAN PHYSICAL SOC
Regan PH, Gamsworthy AB, Steer SJ, Pletri S, Podolyak Z, Rudolph D, Gorska M, Caceres L, Wemer-Malento E, Gerl J, Wollersheim HJ, Becker F, Bednarczyk P, Doornenbal PD, Geissel H, Grawe H, Grebosz J, Hoischen R, Kelic A, Kojouharov I, Kurz N, Montes F, Prokopowicz W, Saito T, Schaffner H, Tashenov S, Heinz A, Pfuetzner M, Kurtukian-Nieto T, Benzoni G, Hellstroem M, Jungclaus A, Andersson L-L, Atanasova L, Balabanski DL, Bentley MA, Blank B, Blazhev A, Brandau C, Brown J, Bruce AM, Camera F, Catford WN, Cullen IJ, Dombradi Z, Estevez E, Fahlander C, Gelletly W, Ilie G, Johansson EK, Jolie J, Jones GA, Kmiecik M, Kondev G, Lalkovski S, Liu Z, Maj A, Myalski S, Schwertel S, Shizuma T, Simons AJ, Walker PM, Wieland O (2007) First results from the stopped RISING campaign at GSI: The mapping of isomeric decays in highly exotic nuclei, Six International Conference of the Balkan Physical Union 899 pp. 19-22 AMER INST PHYSICS
Najem MA, Spyrou NM, Podolyák Z, Abolaban FA (2014) The physical characteristics of the 15MV Varian Clinac 2100C unflattened beam, Radiation Physics and Chemistry 95 pp. 205-209
A 15MV photon beam of a Varian Clinac 2100C medical linear accelerator operating with and without a flattening filter was simulated using the Monte Carlo code 'FLUKA' in order to calculate differences in their dosimetric properties. These include: the dose rate, the percentage depth dose on the central axis, the beam profile, the out-of-field dose, the surface dose on a 40×40×40cm3 water phantom and the neutron contamination. The results obtained showed that the unflattened beam has a dose rate 4.86 times higher than the flattened one. The average out-of-field dose from the edge of the field to the edge of the phantom was reduced by 44%, the neutron fluence at the isocentre was reduced by 77% and the surface neutron dose-equivalent was reduced from 2.11±0.05 to 0.40±0.01mSv(n) Gy-1(X) after normalising both beams to give the same dose at dmax (the depth of maximum dose). However, the photon surface dose of the unflattened beam increased by 13%. From this information, it can be concluded that the unflattened beam can lead to better treatment outcome and may reduce the beam-on time which may be required for specific cases. © 2013 Elsevier Ltd.
Gómez-Hornillos MB, Rissanen J, Taín JL, Algora A, Kratz KL, Lhersonneau G, Pfeiffer B, Agramunt J, Cano-Ott D, Gorlychev V, Caballero-Folch R, Martínez T, Achouri L, Calvino F, Cortés G, Eronen T, García A, Parlog M, Podolyak Z, Pretel C, Valencia E (2014) ²-delayed neutron emission studies, Hyperfine Interactions 223 (1-3) pp. 185-194
The study of ²-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 ²-delayed neutron emission studies that have been carried out at the IGISOL facility with two different neutron detectors based on 3He counters in a polyethylene moderator: the Mainz neutron detector and the BEta deLayEd Neutron detector. © 2012 Springer Science+Business Media B.V.
Ilie G, Neyens G, Simpson GS, Jolie J, Blazhev A, Grawe H, Lozeva RL, Vermeulen N, Atanasova L, Balabanski DL, Becker F, Bednarczyk P, Brandau C, Caceres L, Chamoli SK, Daugas JM, Doornenbal P, Gerl J, Gorska M, Grebosz J, Hass M, Ionescu-Bujor M, Jungclaus A, Kmiecik M, Kojouharov I, Kurz N, Maj A, Mallion S, Perru O, Pfuetzner M, Podolyak Z, Prokopowicz W, De Rydt M, Saito TR, Schaffner H, Turzo K, Walker J, Werner-Malento E, Wollersheim HJ (2010) g Factor of the 7(-) isomer in Sn-126 and first observation of spin-alignment in relativistic fission, PHYSICS LETTERS B 687 (4-5) pp. 305-309 ELSEVIER SCIENCE BV
Marcinkowska Z, Rzaca-Urban T, Droste C, Morek T, Czajkowska B, Urban W, Marcinkowski R, Olbratowski P, Lieder RM, Brans H, Gast W, Jager HM, Mihailescu L, Bazzacco D, Falconi G, Menegazzo R, Lunardi S, Rossi-Alvarez C, de Angelis G, Farnea E, Gadea A, Napoli DR, Podolyak Z (2003) Magnetic rotation in the nucleus Eu-141, ACTA PHYSICA POLONICA B 34 (4) pp. 2319-2322 ACTA PHYSICA POLONICA B, JAGELLONIAN UNIV, INST PHYSICS
Mach H, Walker PM, Julin R, Leino M, Juutinen S, Stanoiu M, Podolyak Z, Wood R, Bruce AM, Back T, Cameron JA, Cederwall B, Ekman J, Fogelberg B, Greenless PT, Hellstrom M, Jones P, Klamra W, Lagergren K, Leppanen AP, Nieminen P, Orlandi R, Pakarinen J, Rahkila P, Rudolph D, Simpson G, Uusitalo J, Wheldon C (2005) Application of ultra-fast timing techniques to the study of exotic and weakly produced nuclei, JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS 31 (10) pp. S1421-S1426 IOP PUBLISHING LTD
Alharbi T, Regan PH, MÎrginean N, Podolyák Z, Bajoga A, Britton R, Bucurescu D, Deleanu D, Filipescu D, GhitÎ D, Glodariu T, Mihai C, Mulholland K, MÎrginean R, Negret A, Nita CR, Patel Z, Roberts OJ, Stroe L, Sava T, Townsley C, Zamfir NV (2014) Sub-nanosecond Half-life Measurement of the Yrast IÀ=5- State in the N=78 Nucleus Ce58136 using Fast-timing Coincident Gamma-ray Spectroscopy, Nuclear Data Sheets 120 pp. 59-61
We report on the measurement of the half-life of the yrast IÀ=5- state in the transitional nucleus 136Ce using a combined HPGe-LaBr3(Ce) scintillator gamma-ray detection array. The measured value for the E1 decay is approximately half a nanosecond, which corresponds to an E1 decay strength of approximately 2×10-6 Wu. This value is in line with single-particle type E1 decays in this mass region and suggests no sign of additional K-hindrance associated with axially symmetric quadrupole deformations observed for lighter cerium isotopes. © 2014 Elsevier Inc.
Viesti G, Rizzi V, Cinausero N, Gelli N, Gadea A, Bazzacco D, Algora-Pineda A, Appelbee D, de Angelis G, Belcari N, De Poli M, Drake T, Fabris D, Farnea E, Fioretto E, Galindo-Uribarri A, Krolas W, Kroll T, Lucarelli F, Lunardi S, Lunardon M, Martinez T, Menegazzo R, Nayak B, Nebbia G, Napoli D, Nyako B, Petrache C, Podolyak Z, Prete G, Alvarez C, Spolaore P, Ur C, Zuber K (2001) Observation of a double giant dipole resonance in fusion-evaporation reactions, PHYSICAL REVIEW C 63 (3) ARTN 03461 AMERICAN PHYSICAL SOC
Podolyák Z, Steer SJ, Farrelly G, Górska M, Grawe H, Maier HK, Regan PH, Benlliure J, Pietri S, Gerl J, Wollersheim HJ (2009) Structure of neutron-rich N=126 closed shell nuclei, AIP Conference Proceedings 1165 pp. 86-89
Abstract.: A series of experiments devoted to the study of the neutron-rich N
Ionescu-Bujor M, Iordachescu A, Brandolini F, De Poli M, Marginean N, Medina NH, Podolyak ZS, Pavan P, Ribas RV, Lenzi SM, Gadea A, Martinez T (2000) g factors of the 7/2 and 14(+) isomers in W-175,W-176, PHYSICS LETTERS B 495 (3-4) pp. 289-294 ELSEVIER SCIENCE BV
Gottardo A, Valiente-Dobón JJ, Benzoni G, Nicolini R, Núñez JA, Algora A, Al-Dahan N, Angelis GD, Ayyad Y, Alkhomashi N, Allegro PRP, Benlliure J, Boutachkov P, Bowry M, Bracco A, Bruce AM, Bunce M, Casarejos E, Cortes L, Crespi FCL, Camera F, Corsi A, Bacelar AMD, Deo A, Domingo-Pardo C, Doncel M, Dombradi Z, Engert T, Eppinger K, Farrelly GF, Farinon F, Gadea A, Geissel H, Gerl J, Goel N, Górska M, Grebosz J, Gregor E, Haberman T, Hoischen R, Janik R, Klupp S, Kojouharov I, Kurz N, Leoni S, Lunardi S, Mandal S, Menegazzo R, Mengoni D, Million B, Napoli DR, Naqvi F, Nociforo C, Pfützner M, Pietri S, Podolyak Z, Prochazka A, Prokopowicz W, Recchia F, Ribas RV, Reed MW, Regan PH, Rudolph D, Sahin E, Schaffner H, Sharma A, Sitar B, Siwal D, Steger K, Strmen P, Swan TPD, Szarka I, Walker PM, Wieland O, Weick H, Wollersheim HJ (2011) Isomers in neutron-rich lead isotopes populated via the fragmentation of 238U at 1 GeV A, Journal of Physics: Conference Series 312 (SECTION 9)
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.
Chen L, Plaß WR, Geissel H, Knöbel R, Kozhuharov C, Litvinov Y, Patyk Z, Scheidenberger C, SiegieD-Iwaniuk K, Sun B, Weick H, Beckert K, Beller P, Bosch F, Boutin D, Caceres L, Carroll JJ, Cullen DM, Cullen IJ, Franzke B, Gerl J, Górska M, Jones GA, Kishada A, Kurcewicz J, Litvinov SA, Liu Z, Mandal S, Montes F, Münzenberg G, Nolden F, Ohtsubo T, Podolyák Z, Propri R, Rigby S, Saito N, Saito T, Shindo M, Steck M, Walker PM, Williams S, Winkler M, Wollersheim H-J, Yamaguchi T (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, Nuclear Physics A 882 pp. 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.
Grieser M, Litvinov YA, Raabe R, Blaum K, Blumenfeld Y, Butler PA, Wenander F, Woods PJ, Aliotta M, Andreyev A, Artemyev A, Atanasov D, Aumann T, Balabanski D, Barzakh A, Batist L, Bernardes AP, Bernhardt D, Billowes J, Bishop S, Borge M, Borzov I, Bosch F, Boston AJ, Brandau C, Catford W, Catherall R, Cederkäll J, Cullen D, Davinson T, Dillmann I, Dimopoulou C, Dracoulis G, Düllmann CE, Egelhof P, Estrade A, Fischer D, Flanagan K, Fraile L, Fraser MA, Freeman SJ, Geissel H, Gerl J, Greenlees P, Grisenti RE, Habs D, von Hahn R, Hagmann S, Hausmann M, He JJ, Heil M, Huyse M, Jenkins D, Jokinen A, Jonson B, Joss DT, Kadi Y, Kalantar-Nayestanaki N, Kay BP, Kiselev O, Kluge HJ, Kowalska M, Kozhuharov C, Kreim S, Kröll T, Kurcewicz J, Labiche M, Lemmon RC, Lestinsky M, Lotay G, Ma XW, Marta M, Meng J, Mücher D, Mukha I, Müller A, Murphy AS, Neyens G, Nilsson T, Nociforo C, Nörtershäuser W, Page RD, Pasini M, Petridis N, Pietralla N, Pfützner M (2012) Storage ring at HIE-ISOLDE: Technical design report: Technical design report, European Physical Journal: Special Topics 207 (1) pp. 1-117
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. © 2012 EDP Sciences and Springer.
Regan PH, Jones GA, Podolyak Z, de Angelis G, Zhang YH, Gadea A, Ur CA, Abdullah M, Axiotis M, Bazzacco D, Broda R, Bucurescu D, Farnea E, Gelletly W, Ionescu-Bujor M, Iordachescu A, Kroell T, Langdown SD, Lenzi S, Lunardi S, Marginean N, Martinez T, Medina N, Menegazzo R, Napoli DR, Quintana B, Rubio B, Rusu C, Schwenger R, Tonev D, Valiente-Dobon JJ, von Oertzen W, Wollel G (2006) Nuclear structure and reaction mechanism studies with multinucleon reactions, FUSION06: Reaction Mechanisms and Nuclear Structure at the Coulomb Barrier 853 pp. 271-276 AMER INST PHYSICS
Marginean N, Bucurescu D, Alvarez CR, Ur CA, Sun Y, Bazzacco D, Lunardi S, de Angelis G, Axiotis M, Farnea E, Gadea A, Ionescu-Bujor M, Iordachescu A, Krolas W, Koll T, Lenzi SM, Martinez T, Menegazzo R, Napoli DR, Pavan P, Podolyak Z, De Poli M, Quintana B, Spolaore P (2004) High-spin behavior of multiple bands in the N = Z+1 nucleus Zr-81: A possible probe of enhanced neutron-proton correlations, PHYSICAL REVIEW C 69 (5) ARTN 054301 AMER PHYSICAL SOC
Petrache CM, Sun Y, Bazzacco D, Lunardi S, Alvarez CR, Falconi G, Venturelli R, Maron G, Napoli DR, Podolyak Z, Walker PM (1997) High-K bands and oblate-prolate coexistence in Nd-134, NUCLEAR PHYSICS A 617 (2) pp. 249-264 ELSEVIER SCIENCE BV
Steer SJ, PodolyÁk ZS, Pietri S, GÓrska M, Farrelly GF, Regan PH, Rudolph D, Garnsworthy AB, Hoischen R, Gerl J, Wollersheim HJ, Grawe H, Maier KH, Becker F, Bednarczyk P, CÁceres L, Doornenbal P, Geissel H, Grbosz J, Kelic A, Kojouharov I, Kurz N, Montes F, Prokopowicz W, Saito T, Schaffner H, Tashenov S, Heinz A, Kurtukian-Nieto T, Benzoni G, PfÜtzner M, Jungclaus A, Balabanski DL, Brandau C, Brown A, Bruce AM, Catford WN, Cullen IJ, DombrÁdi Z, Estevez ME, Gelletly W, Ilie G, Jolie J, Jones GA, Kmiecik M, Kondev FG, KrÜcken R, Lalkovski S, Liu Z, Maj A, Myalski S, Schwertel S, Shizuma T, Walker PM, Werner-Malento E, Wieland O (2009) Isomeric decay studies in neutron-rich N H 126 nuclei, International Journal of Modern Physics E 18 (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.
Vajta Z, Stanoiu M, Sohler D, Jansen GR, Azaiez F, Dombrádi Z, Sorlin O, Brown BA, Belleguic M, Borcea C, Bourgeois C, Dlouhy Z, Elekes Z, Fülöp Z, Grévy S, Guillemaud-Mueller D, Hagen G, Hjorth-Jensen M, Ibrahim F, Kerek A, Krasznahorkay A, Lewitowicz M, Lukyanov SM, Mandal S, Mayet P, Mrázek J, Negoita F, Penionzhkevich YE, Podolyák Z, Roussel-Chomaz P, Saint-Laurent MG, Savajols H, Sletten G, Timár J, Timis C, Yamamoto A (2014) Excited states in the neutron-rich nucleus F 25, Physical Review C - Nuclear Physics 89 (5)
The structure of the nucleus 925F was investigated through in-beam ³-ray spectroscopy of the fragmentation of Ne26 and Na27,28 ion beams. Based on the particle-³ and particle-³³ coincidence data, a level scheme was constructed and compared with shell model and coupled-cluster calculations. Some of the observed states were interpreted as quasi-single-particle states built on top of the closed-shell nucleus O24, while the others were described as states arising from coupling of a single proton to the 2+ core excitation of O24. © 2014 American Physical Society.
Farrelly GF, Podolyak Z, Steer SJ, Pietri S, Xu FR, Werner-Malento E, Shizuma T, Regan PH, Rudolph D, Garnsworthy AB, Hoischen R, Gorska M, Gerl J, Wollersheim HJ, Kurtukian-Nieto T, Benzoni G, Becker F, Bednarczyk P, Caceres L, Doornenbal P, Geisserl H, Grebosz J, Kelic A, Kojouharov I, Kurz N, Montes F, Prokopowicz W, Saito T, Schaffner H, Tashenov S, Heinz A, Pfuezner M, Jungclaus A, Balabanski DL, Brandau C, Bruce AM, Catford WN, Cullen IJ, Dombradi Z, Estevez E, Gelletly W, Ilie G, Jolie J, Jones GA, Kmiecik M, Kondev FG, Kruecken R, Lalkovski S, Liu HL, Liu Z, Maj A, Myalski S, Schwerrel S, Walker PM, Wieland O (2009) REVISION OF THE K-ISOMER IN W-190(116), ACTA PHYSICA POLONICA B 40 (3) pp. 885-888 WYDAWNICTWO UNIWERSYTETU JAGIELLONSKIEGO
Podolyak Z, Steer SJ, Pietri S, Werner-Malento E, Regan PH, Rudolph D, Garnsworthy AB, Hoischen R, Gorska M, Gerl J, Wollersheim HJ, Kurtukian-Nieto T, Benzoni G, Becker F, Bednarczyk P, Caceres L, Doornenbal P, Geissel H, Grebosz J, Kelic A, Kojouharov I, Kurz N, Montes F, Prokopowicz W, Saito T, Schaffner H, Tashenov S, Heinz A, Pfutzner M, Hellstrom M, Jungclaus A, Andersson L-L, Atanasova L, Balabanski DL, Bentley A, Blank B, Blazhev A, Brandau C, Brown J, Bruce AM, Camera F, Catford WN, Cullen IJ, Dombradi Z, Estevez E, Fahlander C, Gelletly W, Ilie G, Johansson EK, Jolie J, Jones GA, Kmiecik M, Kondev FG, Lalkovski S, Liu Z, Maj A, Myalski S, Shizuma T, Simons AJ, Schwertel S, Walker PM, Wieland O, Brown BA (2007) Isomeric decay studies around Pt-204 and Tb-148, EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS 150 pp. 165-168 EDP SCIENCES S A
Podolyak Z, Steer SJ, Pietri S, Gorska M, Regan PH, Rudolph D, Garnsworthy AB, Hoischen R, Gerl J, Wollersheim HJ, Grawe H, Maier KH, Becker F, Bednarczyk P, Caceres L, Doornenbal P, Geissel H, Grebosz J, Kelic A, Kojouharov I, Kurz N, Montes F, Prokopowicz W, Saito T, Schaffner H, Tashenov S, Heinz A, Kurtukian-Nieto T, Benzoni G, Pfuetzner M, Jungclaus A, Balabanski DL, Brandau C, Brown BA, Bruce AM, Catford WN, Cullen IJ, Dombradi Z, Estevez ME, Gelletly W, Ilie G, Jolie J, Jones GA, Kmiecik M, Kondev FG, Kruecken R, Lalkovski S, Liu Z, Maj A, Myalski S, Schwertel S, Shizuma T, Walker PM, Werner-Malento E, Wieland O (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(+)), EUROPEAN PHYSICAL JOURNAL A 42 (3) pp. 489-493 SPRINGER
Gottardo A, Valiente-Dobón JJ, Benzoni G, Gadea A, Lunardi S, Boutachkov P, Bruce AM, Górska M, Grebosz J, Pietri S, Podolyák Z, Pfützner M, Regan PH, Weick H, Núñez JA, Algora A, Al-Dahan N, De Angelis G, Ayyad Y, Alkhomashi N, Allegro PRP, Bazzacco D, Benlliure J, Bowry M, Bracco A, Bunce M, Camera F, Casarejos E, Cortes ML, Crespi FCL, Corsi A, Bacelar AMD, Deo AY, Domingo-Pardo C, Doncel M, Dombradi Z, Engert T, Eppinger K, Farrelly GF, Farinon F, Farnea E, Geissel H, Gerl J, Goel N, Gregor E, Habermann T, Hoischen R, Janik R, John PR, Klupp S, Kojouharov I, Kurz N, Lenzi SM, Leoni S, Mandal S, Menegazzo R, Mengoni D, Million B, Modamio V, Morales AI, Napoli DR, Naqvi F, Nicolini R, Nociforo C, Prochazka A, Prokopowicz W, Recchia F, Ribas RV, Reed MW, Rudolph D, Sahin E, Schaffner H, Sharma A, Sitar B, Siwal D, Steiger K, Strmen P, Swan TPD, Szarka I, Ur CA, Walker PM, Wieland O, Wollersheim HJ (2014) New isomers in the neutron-rich region beyond 208Pb, EPJ Web of Conferences 66
The region of neutron-rich nuclei beyond 208Pb has been very difficult to explore due to its high mass and exoticity. However, recent experimental improvements allowed one to perform a quite extended isomer decay spectroscopy of these nuclei. © Owned by the authors, published by EDP Sciences, 2014.
Stanoiu M, Sohler D, Sorlin O, Dombradi Z, Azaiez F, Brown BA, Borcea C, Bourgeois C, Elekes Z, Fueloep Z, Grevy S, Guillemaud-Mueller D, Ibrahim F, Kerek A, Krasznahorkay A, Lewitowicz M, Lukyanov SM, Mrazek J, Negoita F, Penionzhkevich Y-E, Podolyak Z, Porquet MG, Roussel-Chomaz P, Saint-Laurent MG, Savajols H, Sletten G, Timar J, Timis C (2012) Spectroscopy of F-26, PHYSICAL REVIEW C 85 (1) ARTN 017303
Jones GA, Regan PH, Walker PM, Podolyak Z, Stevenson PD, Carpenter MP, Carroll JJ, Chakrawarthy RS, Chowdhury P, Garnsworthy AB, Janssens RVF, Khoo TL, Kondev FG, Lane GJ, Liu Z, Seweryniak D, Thompson NJ, Zhu S, Williams SJ (2007) Identification of a high-spin isomer in (99)Mo, PHYSICAL REVIEW C 76 (4) ARTN 047303 AMER PHYSICAL SOC
Zhang YH, Hasegawa M, Guo WT, Liu ML, Zhou XH, de Angelis G, Axiotis TM, Gadea A, Marginean N, Martinez, Napoli DR, Rusu C, Podolyak Z, Ur C, Bazzacco D, Brandolini F, Lunardi S, Lenzi SM, Menegazzo R, Schwengner R, Gargano A, von Oertzen W, Tazaki S (2009) High-spin level structure in Mo-94,Mo-95, PHYSICAL REVIEW C 79 (4) ARTN 044316 AMER PHYSICAL SOC
Oliveira JRB, Falla-Sotelo F, Rao MN, Alcantara-Nunez JA, Cybulska EW, Medina NH, Ribas RV, Rizzutto MA, Seale WA, Bazzacco D, Brandolini F, Lunardi S, Rossi-Alvarez C, Petrache C, Podolyak Z, Ur CA, de Acuna D, de Angelis G, Farnea E, Foltescu D, Gadea A, Napoli DR, de Poli M, Spolaore P, Ionescu-Bujor M, Iordachescu A (2006) High-K band in Gd-140, BRAZILIAN JOURNAL OF PHYSICS 36 (4B) pp. 1371-1374 SOCIEDADE BRASILEIRA FISICA
Morales AI, Benlliure J, Agramunt J, Algora A, Alkhomashi N, Alvarez-Pol H, Boutachkov P, Bruce AM, Caceres LS, Casarejos E, Bacelar AMD, Doornenbal P, Dragosavac D, Farrelly G, Gadea A, Gelletly W, Gerl J, Gorska M, Grebosz J, Kojouharov I, Molina F, Perez-Loureiro D, Pietri S, Podolyak Z, Regan PH, Rubio B, Shaffner H, Steer SJ, Tashenov S, Verma S, Wollersheim HJ (2011) Synthesis of N=127 isotones through (p,n) charge-exchange reactions induced by relativistic Pb-208 projectiles, PHYSICAL REVIEW C 84 (1) ARTN 011601 AMER PHYSICAL SOC
Swan TPD, Walker PM, Podolyak Z, Reed MW, Dracoulis GD, Lane GJ, Kibedi T, Smith ML (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, PHYSICAL REVIEW C 83 (3) ARTN 034322 AMER PHYSICAL SOC
Régis JM, Simpson GS, Blanc A, De France G, Jentschel M, Köster U, Mutti P, Paziy V, Saed-Samii N, Soldner T, Ur CA, Urban W, Bruce AM, Drouet F, Fraile LM, Ilieva S, Jolie J, Korten W, Kröll T, Lalkovski S, Mach H, MÎrginean N, Pascovici G, Podolyak Z, Regan PH, Roberts OJ, Smith JF, Townsley C, Vancraeyenest A, Warr N (2014) Germanium-gated ³-³ Fast timing of excited states in fission fragments using the EXILL&FATIMA spectrometer, Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 763 pp. 210-220
A high-granularity mixed spectrometer consisting of high-resolution Ge and very fast LaBr3(Ce)-scintillator detectors has been installed around a fission target at the cold-neutron guide PF1B of the high-flux reactor of the Institut Laue-Langevin. Lifetimes of excited states in the range of 10 ps to 10 ns can be measured in around 100 exotic neutron-rich fission fragments using Ge-gated LaBr3(Ce)-LaBr3(Ce) or Ge-Ge-LaBr 3(Ce)-LaBr3(Ce) coincidences. We report on various characteristics of the EXILL&FATIMA spectrometer for the energy range of 40 keV up to 6.8 MeV and present results of ps-lifetime test measurements in a fission fragment. The results are discussed with respect to possible systematic errors induced by background contributions. © 2014 Published by Elsevier B.V.
Podolyak Z, Gerl J, Hellstroem M, Becker F, Gladnishki KA, Gorska M, Kelic A, Kopatch Y, Mandal S, Regan PH, Schmidt K-H, Walker PM, Wollersheim HJ, Banu A, Benzoni G, Boardman H, Casarejos E, Ekman J, Geissel H, Grawe H, Hohn D, Kojouharov I, Leske J, Lozeva R, Mineva MN, Neyens G, Page RD, Pearson CJ, Portillo M, Rudolph D, Saito N, Schaffner H, Sohler D, Summerer K, Valiente-Dobon JJ, Wheldon C, Weick H, Winkler M (2006) Neutron-deficient N approximate to 126 nuclei produced in U-238 fragmentation: Population of high-spin states, Frontiers in Nuclear Structure Astrophysics, and Reactions: FINUSTAR 831 pp. 114-118 AMER INST PHYSICS
Schlegel C, Regan PH, Pfutzner M, Gerl J, Hellstrom M, Podolyak Z, Caamano M, Mayet P, Aprahamian A, Benlliure J, Bruce AM, Butler PA, Gil DC, Cullen DM, Doring J, Enquist T, Farget E, Fox C, Narro JG, Gelletly W, Giovinazzo J, Gorska M, Grawe H, Grzywacz R, Kleinbohl A, Korten W, Lewitowicz M, Lucas R, Mach H, Mineva M, O'Leary C, De Oliveira F, Pearson CJ, Rejmund M, Sawicka M, Schaffner H, Schmidt K, Theisen C, Walker PM, Warner DD, Wheldon C, Wollersheim HJ, Wooding S, Xu F (2000) K-isomers in very neutron-rich nuclei around mass 180, PHYSICA SCRIPTA T88 pp. 72-76 ROYAL SWEDISH ACAD SCIENCES
Nara Singh BS, Liu Z, Wadsworth R, Grawe H, Brock TS, Boutachkov P, Braun N, Blazhev A, Górska M, Pietri S, Rudolph D, Domingo-Pardo C, Steer SJ, Ataç A, Bettermann L, Cáceres L, Eppinger K, Engert T, Faestermann T, Farinon F, Finke F, Geibel K, Gerl J, Gernhäuser R, Goel N, Gottardo A, Grabosz J, Hinke C, Hoischen R, Ilie G, Iwasaki H, Jolie J, Ka_ka_ A, Kojouharov I, Krücken R, Kurz N, Merchán E, Nociforo C, Nyberg J, Pfützner M, Prochazka A, Podolyák Z, Regan PH, Reiter P, Rinta-Antila S, Scholl C, Schaffner H, Söderström P-A, Warr N, Weick H, Wollersheim H-J, Woods PJ, Nowacki F, Sieja K (2011) 16+ spin-gap isomer in Cd96, Physical Review Letters 107 (17) 172502 American Physical Society
DiJulio DD, Cederkall J, Fahlander C, Ekstrom A, Golubev P, Mattsson K, Rudolph D, de Angelis G, Aydin S, Deo AY, Farnea E, Farrelly G, Geibel K, He C, Iwanicki J, Kempley R, Marginean N, Menegazzo R, Mengoni D, Orlandi R, Podolyak Z, Recchia F, Reiter P, Sahin E, Smith J, Soderstrom PA, Torres DA, Tveten GM, Ur CA, Valiente-Dobon JJ, Wendt A, Zielinska M (2011) Electromagnetic properties of vibrational bands in Er-170, EUROPEAN PHYSICAL JOURNAL A 47 (2) ARTN 25 SPRINGER
Sawicka M, Daugas JM, Grawe H, Cwiok S, Balabanski DL, Beraud R, Bingham C, Borcea C, La Commara M, de France G, Georgiev G, Gorska M, Grzywacz R, Hass M, Hellstrom M, Janas Z, Lewitowicz M, Mach H, Matea I, Neyens G, O'Leary C, Santos FD, Page RD, Pfutzner M, Podolyak Z, Rykaczewski K, Stanoiu M, Zylicz J (2003) Isomeric decay of Fe-67 - Evidence for deformation, EUROPEAN PHYSICAL JOURNAL A 16 (1) pp. 51-54 SPRINGER-VERLAG
Georgiev G, Neyens G, Hass M, Balabanski DL, Bingham C, Borcea C, Coulier N, Coussement R, Daugas JM, de France G, Gorska M, Grawe H, Grzywacz R, Lewitowicz M, Mach H, Matea I, Santos FD, Page RD, Pfutzner M, Penionzhkevich YE, Podolyak Z, Regan PH, Rykaczewski K, Sawicka M, Smirnova NA, Sobolev Y, Stanoiu M, Teughels S, Vyvey K (2004) G-factors of isomeric states in the neutron-rich nuclei, EUROPEAN PHYSICAL JOURNAL A 20 (1) pp. 93-94 SPRINGER
Sohler D, Grevy S, Dombradi Z, Sorlin O, Gaudefroy L, Bastin B, Achouri NL, Angelique JC, Azaiez F, Baiborodin D, Borcea R, Bourgeois C, Buta A, Burger A, Caceres L, Chapman R, Dalouzy JC, Dlouhy Z, Drouard A, Elekes Z, Franchoo S, Iacob S, Kuti I, Laurent B, Lazar M, Liang X, Lienard E, Lukyanov SM, Mrazek J, Nalpas L, Negoita F, Nowacki F, Orr NA, Penionzkhevitch YE, Podolyak Z, Pougheon F, Poves A, Roussel-Chomaz P, Stanoiu M, Stefan I, St-Laurent MG (2011) Spectroscopy of Si-39.41 and the border of the N=28 island of inversion, PHYSICS LETTERS B 703 (4) pp. 417-421 ELSEVIER SCIENCE BV
Najem MA, Abolaban FA, Podolyák Z, Spyrou NM (2014) Neutron production from flattening filter free high energy medical linac: A Monte Carlo study, Radiation Physics and Chemistry
© 2015 Elsevier Ltd. One of the problems arising from using a conventional linac at high energy (>8. MV) is the production of neutrons. One way to reduce neutron production is to remove the flattening filter (FF). The main purpose of this work was to study the effect of FF removal on neutron fluence and neutron dose equivalent inside the treatment room at different photon beam energies. Several simulations based on Monte Carlo techniques were carried out in order to calculate the neutron fluence at different locations in the treatment room from different linac energies with and without a FF. In addition, a step-and-shoot intensity modulated radiotherapy (SnS IMRT) for prostate cancer was modelled using the 15. MV photon beam with and without a FF on a water phantom to calculate the neutron dose received in a full treatment. The results obtained show a significant drop-off in neutrons fluence and dose equivalent when the FF was removed. For example, the neutron fluence was decreased by 54%, 76% and 75% for 10, 15 and 18. MV, respectively. This can decrease the neutron dose to the patient as well as reduce the shielding cost of the treatment room. The neutron dose equivalent of the SnS IMRT for prostate cancer was reduced significantly by 71.3% when the FF was removed. It can be concluded that the flattening filter removal from the head of the linac could reduce the risk of causing secondary cancers and the shielding cost of radiotherapy treatment rooms.
Wheldon C, Narro JG, Pearson CJ, Regan PH, Podolyak Z, Warner DD, Fallon P, Macchiavelli AO, Cromaz M (2001) Yrast states in Os-194: The prolate-oblate transition region, PHYSICAL REVIEW C 63 (1) ARTN 011304 AMERICAN PHYSICAL SOC
Espinoza-Quinones F, Rizzutto M, Cybulska E, Seale W, Oliveira J, Medina N, Ribas R, Rao M, Bazzacco D, Brandolini F, Lunardi S, Petrache C, Podolyak Z, Rossi-Alvarez C, Soramel F, Ur C, Cardona M, de Angelis G, Napoli D, Spolaore P, Gadea A, De Acuna D, De Poli M, Farnea E, Foltescu D, Ionescu-Bujor M, Iordachescu A, Roca V, Terrasi F, Chatterjee A, Saxena A, Bohus L (1999) High-spin state spectroscopy in Tb-143, PHYSICAL REVIEW C 60 (5) ARTN 05430 AMERICAN PHYSICAL SOC
Caceres LS, Gorska M, Jungclaus A, Regan PH, Garnsworthy AB, Pietri S, Podolyak Z, Rudolph D, Steer SJ, Grawe H, Balabanski DL, Becker F, Bednarczyk P, Benzoni G, Blank B, Brandau C, Bruce AM, Camera F, Catford WN, Cullen IJ, Dombradi Z, Doornenbalal P, Estevez E, Geissel H, Gelletly W, Gerl J, Grebosz J, Heinz A, Hoischen R, Ilie G, Jolie J, Jones GA, Kmiecik M, Kojouharov I, Kondev FG, Kurtukian-Nieto T, Kurz N, Lalkowski S, Liu L, Maj A, Myalsk S, Montes F, Pfuetzner M, Prokopowicz W, Saito T, Schatfner H, Schwertel S, Shizuma T, Simons AJ, Tashenov S, Walker PM, Werner-Malento E, Wielandh O, Wollersheim HJ (2007) Identification of excited states in the N = Z nucleus Nb-82, ACTA PHYSICA POLONICA B 38 (4) pp. 1271-1275 ACTA PHYSICA POLONICA B, JAGELLONIAN UNIV, INST PHYSICS
Akkoyun S, Algora A, Alikhani B, Ameil F, De Angelis G, Arnold L, Astier A, Ataç A, Aubert Y, Aufranc C, Austin A, Aydin S, Azaiez F, Badoer S, Balabanski DL, Barrientos D, Baulieu G, Baumann R, Bazzacco D, Beck FA, Beck T, Bednarczyk P, Bellato M, Bentley MA, Benzoni G, Berthier R, Berti L, Beunard R, Lo Bianco G, Birkenbach B, Bizzeti PG, Bizzeti-Sona AM, Le Blanc F, Blasco JM, Blasi N, Bloor D, Boiano C, Borsato M, Bortolato D, Boston AJ, Boston HC, Bourgault P, Boutachkov P, Bouty A, Bracco A, Brambilla S, Brawn IP, Brondi A, Broussard S, Bruyneel B, Bucurescu D, Burrows I, Bürger A, Cabaret S, Cahan B, Calore E, Camera F, Capsoni A, Carrió F, Casati G, Castoldi M, Cederwall B, Cercus J-L, Chambert V, El Chambit M, Chapman R, Charles L, Chavas J, Clément E, Cocconi P, Coelli S, Coleman-Smith PJ, Colombo A, Colosimo S, Commeaux C, Conventi D, Cooper RJ, Corsi A, Cortesi A, Costa L, Crespi FCL, Cresswell JR, Cullen DM, Curien D, Czermak A, Delbourg D, Depalo R, Descombes T, Désesquelles P, Detistov P, Diarra C, Didierjean F, Dimmock MR, Doan QT, Domingo-Pardo C, Doncel M, Dorangeville F, Dosme N, Drouen Y, Duchêne G, Dulny B, Eberth J, Edelbruck P, Egea J, Engert T, Erduran MN, Ertürk S, Fanin C, Fantinel S, Farnea E, Faul T, Filliger M, Filmer F, Finck C, De France G, Gadea A, Gast W, Geraci A, Gerl J, Gernhäuser R, Giannatiempo A, Giaz A, Gibelin L, Givechev A, Goel N, González V, Gottardo A, Grave X, Gr)bosz J, Griffiths R, Grint AN, Gros P, Guevara L, Gulmini M, Görgen A, Ha HTM, Habermann T, Harkness LJ, Harroch H, Hauschild K, He C, Hernández-Prieto A, Hervieu B, Hess H, Hüyük T, Ince E, Isocrate R, Jaworski G, Johnson A, Jolie J, Jones P, Jonson B, Joshi P, Judson DS, Jungclaus A, Kaci M, Karkour N, Karolak M, Ka_ka_ A, Kebbiri M, Kempley RS, Khaplanov A, Klupp S, Kogimtzis M, Kojouharov I, Korichi A, Korten W, Kröll T, Krücken R, Kurz N, Ky BY, Labiche M, Lafay X, Lavergne L, Lazarus IH, Leboutelier S, Lefebvre F, Legay E, Legeard L, Lelli F, Lenzi SM, Leoni S, Lermitage A, Lersch D, Leske J, Letts SC, Lhenoret S, Lieder RM, Linget D, Ljungvall J, Lopez-Martens A, Lotodé A, Lunardi S, Maj A, Van Der Marel J, Mariette Y, Marginean N, Marginean R, Maron G, Mather AR, M)czyDski W, Mendéz V, Medina P, Melon B, Menegazzo R, Mengoni D, Merchan E, Mihailescu L, Michelagnoli C, Mierzejewski J, Milechina L, Million B, Mitev K, Molini P, Montanari D, Moon S, Morbiducci F, Moro R, Morrall PS, Möller O, Nannini A, Napoli DR, Nelson L, Nespolo M, Ngo VL, Nicoletto M, Nicolini R, Le Noa Y, Nolan PJ, Norman M, Nyberg J, Obertelli A, Olariu A, Orlandi R, Oxley DC, Özben C, Ozille M, Oziol C, Pachoud E, Palacz M, Palin J, Pancin J, Parisel C, Pariset P, Pascovici G, Peghin R, Pellegri L, Perego A, Perrier S, Petcu M, Petkov P, Petrache C, Pierre E, Pietralla N, Pietri S, Pignanelli M, Piqueras I, Podolyak Z, Le Pouhalec P, Pouthas J, Pugnére D, Pucknell VFE, Pullia A, Quintana B, Raine R, Rainovski G, Ramina L, Rampazzo G, La Rana G, Rebeschini M, Recchia F, Redon N, Reese M, Reiter P, Regan PH, Riboldi S, Richer M, Rigato M, Rigby S, Ripamonti G, Robinson AP, Robin J, Roccaz J, Ropert J-A, Rossé B, Rossi Alvarez C, Rosso D, Rubio B, Rudolph D, Saillant F, ^ahin E, Salomon F, Salsac M-D, Salt J, Salvato G, Sampson J, Sanchis E, Santos C, Schaffner H, Schlarb M, Scraggs DP, Seddon D, ^enyiçit M, Sigward M-H, Simpson G, Simpson J, Slee M, Smith JF, Sona P, Sowicki B, Spolaore P, Stahl C, Stanios T, Stefanova E, Stézowski O, Strachan J, Suliman G, Söderström P-A, Tain JL, Tanguy S, Tashenov S, Theisen C, Thornhill J, Tomasi F, Toniolo N, Touzery R, Travers B, Triossi A, Tripon M, Tun-Lanoë KMM, Turcato M, Unsworth C, Ur CA, Valiente-Dobon JJ, Vandone V, Vardaci E, Venturelli R, Veronese F, Veyssiere C, Viscione E, Wadsworth R, Walker PM, Warr N, Weber C, Weisshaar D, Wells D, Wieland O, Wiens A, Wittwer G, Wollersheim HJ, Zocca F, Zamfir NV, Zi)bliDski M, Zucchiatti A (2012) AGATA - Advanced GAmma Tracking Array, Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 668 pp. 26-58 Elsevier
Söderström PA, Lorusso G, Watanabe H, Nishimura S, Doornenbal P, Thiamova G, Browne F, Gey G, Jung HS, Sumikama T, Taprogge J, Vajta Z, Wu J, Xu ZY, Baba H, Benzoni G, Chae KY, Crespi FCL, Fukuda N, Gernhäuser R, Inabe N, Isobe T, Jungclaus A, Kameda D, Kim GD, Kim YK, Kojouharov I, Kondev FG, Kubo T, Kurz N, Kwon YK, Lane GJ, Li Z, Montaner-Pizá A, Moschner K, Naqvi F, Niikura M, Nishibata H, Odahara A, Orlandi R, Patel Z, Podolyák Z, Sakurai H, Schaffner H, Simpson GS, Steiger K, Suzuki H, Takeda H, Wendt A, Yagi A, Yoshinaga K (2013) Shape evolution in 116,118Ru: Triaxiality and transition between the O(6) and U(5) dynamical symmetries, Physical Review C - Nuclear Physics 88 (2)
116Ru and 118Ru have been studied via ²-delayed ³-ray spectroscopy of nuclei produced in fragmentation reactions at the Radioactive Ion-Beam Factory (RIBF) facility. Level schemes with positive-parity states up to spin J=6 have been constructed. The results have been discussed in terms of the interacting boson model, the algebraic collective model, and total Routhian surfaces. We conclude that the very neutron-rich nuclei still show many features associated with triaxial ³-soft nuclei, represented by the O(6) symmetry, but are approaching a spherical structure, the U(5) symmetry, with increasing neutron number towards the N=82 shell closure. In 118Ru, hints of a shape transition in the ground state have been observed. © 2013 American Physical Society.
Watanabe H, Asahi K, Kishida T, Ueno H, Sato W, Yoshimi A, Kobayashi Y, Kameda D, Miyoshi H, Fukuchi T, Wakabayashi Y, Sasaki T, Kibe M, Hokoiwa N, Odahara A, Cederwall B, Lagergren K, Podolyak Z, Ishihara M, Gono Y (2004) Application of the high-spin isomer beams to the secondary fusion reaction and the measurement of g-factor, NUCLEAR PHYSICS A 746 pp. 540C-543C ELSEVIER SCIENCE BV
Stanoiu M, Azaiez F, Dombradi Z, Sorlin O, Brown BA, Belleguic M, Sohler D, Saint Laurent MG, Penionzhkevich YE, Sletten G, Borcea C, Bourgeois C, Bracco A, Daugas JM, Dlouhy Z, Donzaud C, Fulop Z, Guillemaud-Mueller D, Grevy S, Ibrahim F, Kerek A, Krasznahorkay A, Lewitowicz M, Lukyanov S, Mayet P, Mandal S, Mittig W, Mrazek J, Negoita F, De Oliveira-Santos F, Podolyak Z, Pougheon F, Roussel-Chomaz P, Savajols H, Sobolev Y, Stodel C, Timar J, Yamamoto A (2004) Study of neutron rich carbon and oxygen nuclei up to drip line, NUCLEAR PHYSICS A 746 pp. 135C-139C ELSEVIER SCIENCE BV
Cáceres L, Sohler D, Grévy S, Sorlin O, Dombrádi Z, Bastin B, Achouri NL, Angélique JC, Azaiez F, Baiborodin D, Borcea R, Bourgeois C, Buta A, Bürger A, Chapman R, Dalouzy JC, Dlouhy Z, Drouard A, Elekes Z, Franchoo S, Gaudefroy L, Iacob S, Laurent B, Lazar M, Liang X, Liénard E, Mrazek J, Nalpas L, Negoita F, Nowacki F, Orr NA, Penionzhkevich Y, Podolyák Z, Pougheon F, Poves A, Roussel-Chomaz P, Saint-Laurent MG, Stanoiu M, Stefan I (2012) In-beam spectroscopic studies of the 44S nucleus, Physical Review C - Nuclear Physics 85 (2) 024311 American Physical Society
Wilson J, Lebois M, Qi L, Amador-Celdran P, Bleuel D, Briz J, Carroll R, Catford W, De Witte H, Doherty D, Eloirdi R, Georgiev G, Gottardo A, Goasduff A, HadyDska-Kl?k K, Hauschild K, Hess H, Ingeberg V, Konstantinopoulos T, Ljungvall J, Lopez-Martens A, Lorusso G, Lozeva R, Lutter R, Marini P, Matea I, Materna T, Mathieu L, Oberstedt A, Oberstedt S, Panebianco S, Podolyak Z, Porta A, Regan P, Reiter P, Rezynkina K, Rose S, Sahin E, Seidlitz M, Serot O, Shearman R, Siebeck B, Siem S, Smith A, Tveten G, Verney D, Warr N, Zeiser F, Zielinska M (2017) Anomalies in the Charge Yields of Fission Fragments from the U(n,f)238 Reaction, Physical Review Letters 118 (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 ³-ray spectrometer (MINIBALL) to an inverse-kinematics neutron source (LICORNE) to extract charge yields of fission fragments via ³?³ 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.
Caballero-Folch R, Domingo-Pardo C, Agramunt J, Algora A, Ameil F, Ayyad Y, Benlliure J, Bowry M, Calvino F, Cano-Ott D, Cortes G, Davinson T, Dillmann I, Estrade A, Evdokimov A, Faestermann T, Farinon F, Galaviz D, Garcia A, Geissel H, Gelletly W, Gernhauser R, Gomez-Hornillos M, Guerrero C, Heil M, Hinke C, Knobel R, Kojouharov I, Kurcewicz J, Kurz N, Litvinov Y, Maier L, Marganiec J, Marta M, Martinez T, Montes F, Mukha I, Napoli D, Nociforo C, Paradela C, Pietri S, Podolyak Z, Prochazka A, Rice S, Riego A, Rubio B, Schaffner H, Scheidenberger C, Smith K, Sokol E, Steiger K, Sun B, Tain J, Takechi M, Testov D, Weick H, Wilson E, Winfield J, Wood R, Woods P, Yeremin A (2017) Beta-decay half-lives and Beta-delayed neutron emission probabilities for several isotopes of
Au, Hg, Tl, Pb and Bi, beyond N=126,
PHYSICAL REVIEW C 95 (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
Podolyak Z, FENYES T, TIMAR J (1995) STRUCTURE OF THE AS-70 NUCLEUS, NUCLEAR PHYSICS A 584 (1) pp. 60-83 ELSEVIER SCIENCE BV
Bacelar AMD, Bruce AM, Podolyak Z, Lalkovski S, Pietri S, Al-Dahan N, Gorska M, Algora A, Alkhomashi N, Benlliure J, Boutachkov P, Bracco A, Calore E, Casarejos E, Cullen IJ, Deo AY, Detistov P, Dombradi Z, Domingo-Pardo C, Doncel M, Farinon F, Farrelly GF, Geissel H, Gelletly W, Gerl J, Goel N, Grebosz J, Hoischen R, Kojouharov I, Kurz N, Leoni S, Molina F, Morales AI, Montanari D, Musumarra A, Nicolini R, Napoli DR, Nociforo C, Prochazka A, Prokopowicz W, Regan PH, Rubio B, Rudolph D, Verma S, Steer SJ, Strmen P, Swan TPD, Szarka I, Valiente-Dobon JJ, Walker PM, Weick H, Wollersheim HJ (2009) ANGULAR MOMENTUM POPULATION IN FRAGMENTATION REACTIONS, ACTA PHYSICA POLONICA B 40 (3) pp. 889-892 POLISH ACAD SCIENCES INST PHYSICS
Burger A, Saito TR, Grawe H, Hubel H, Reiter P, Gerl J, Gorska M, Wollersheim HJ, Al-Khatib A, Banu A, Beck T, Becker F, Bednarczyk P, Benzoni G, Bracco A, Brambilla S, Bringel P, Camera F, Clement E, Doornenbal P, Geissel H, Gorgen A, Grebosz J, Hammond G, Hellstrom M, Honma M, Kavatsyuk A, Kavatsyuk O, Kmiecik M, Kojouharov I, Korten W, Kurz N, Lozeva R, Maj A, Mandal S, Million B, Muralithar S, Neusser A, Nowacki F, Otsuka T, Podolyak Z, Saito N, Singh AK, Weick H, Wheldon C, Wieland O, Winkler M (2005) Relativistic Coulomb excitation of neutron-rich Cr-54,Cr-56,Cr-58: On the pathway of magicity from N=40 to N=32, PHYSICS LETTERS B 622 (1-2) pp. 29-34 ELSEVIER SCIENCE BV
Stanoiu M, Azaiez F, Becker F, Belleguic M, Borcea C, Bourgeois C, Brown BA, Dlouhy Z, Dombradi Z, Fulop Z, Grawe H, Grevy S, Ibrahim F, Kerek A, Krasznahorkay A, Lewitowicz M, Lukyanov S, van der Marel H, Mayet P, Mrazek J, Mandal S, Guillemaud-Mueller D, Negoita F, Penionzhkevich YE, Podolyak Z, Roussel-Chomaz P, Saint Laurent MG, Savajols H, Sorlin O, Sletten G, Sohler D, Timar J, Timis C, Yamamoto A (2004) Study of drip line nuclei through two-step fragmentation, EUROPEAN PHYSICAL JOURNAL A 20 (1) pp. 95-96 SPRINGER-VERLAG
Valencia E, Tain J, Algora A, Agramunt J, Estevez E, Jordan M, Rubio B, Rice S, Regan PH, Gelletly W, Podolyak Z, Bowry M, Mason P, Farrelly G, Zakari-Issoufou A, Fallot M, Porta A, Bui V (2017) Total absorption ³ -ray spectroscopy of the ²-delayed neutron emitters 87Br, 88Br, and 94Rb, Physical Review C: Nuclear Physics 024320 American Physical Society
We investigate the decay of 87,88Br and 94Rb using total absorption ³ -ray spectroscopy. These important fission products are ²-delayed neutron emitters. Our data show considerable ²³ intensity, so far unobserved in high-resolution ³ -ray spectroscopy, from states at high excitation energy. We also find significant differences with the ² intensity that can be deduced from existing measurements of the ² 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 ³ emission from neutron unbound states populated in the daughter nucleus. The ³ 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 ³ by one order of magnitude. This increase in ³ would lead to a similar increase in the calculated (n,³ ) cross section for this very neutron-rich nucleus with a potential impact on r process abundance calculations.
Vogt A, Siciliano M, Birkenbach B, Reiter P, HadyDska-Kl?k K, Wheldon C, Valiente-Dobón J, Teruya E, Yoshinaga N, Arnswald K, Bazzacco D, Blazhev A, Bracco A, Bruyneel B, Chakrawarthy R, Chapman R, Cline D, Corradi L, Crespi F, Cromaz M, de Angelis G, Eberth J, Fallon P, Farnea E, Fioretto E, Hess H, Hetzenegger R, Hirsch R, Hua H, John P, Jolie J, Jungclaus A, Karayonchev V, Kaya L, Korten W, Lee I, Leoni S, Liang X, Lunardi S, Macchiavelli A, Menegazzo R, Mengoni D, Michelagnoli C, Mijatovic T, Montagnoli G, Montanari D, Müller-Gatermann C, Napoli D, Pearson C, Podolyak Z, Pollarolo G, Pullia A, Queiser M, Recchia F, Regan P, Régis J, Saed-Samii N, Sahin E, Scarlassara F, Seidlitz M, Siebeck B, Sletten G, Smith J, Söderström P, Stefanini A, Stezowski O, Szilner S, Szpak B, Teng R, Ur C, Warner D, Wolf K, Wu C, Zell K (2017) High-spin structures in ¹³²\mathrmXe and ¹³³\mathrmXe and evidence for isomers along the ?=79 isotones, Physical Review C - Nuclear Physics 96 (2) pp. 024321-1 American Physical Society
The 50 ý N,Z ý 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.
Caceres L, Gorska M, Jungclaus A, Pfutzner M, Grawe H, Nowacki F, Sieja K, Pietri S, Rudolph D, Podolyak Z, Regan PH, Werner-Malento E, Detistov P, Lalkovski S, Modamio V, Walker J, Andgren K, Bednarczyk P, Benlliure J, Benzoni G, Bruce AM, Casarejos E, Cederwall B, Crespi FCL, Doornenbal P, Geissel H, Gerl J, Grebosz J, Hadinia B, Hellstrom M, Hoischen R, Ilie G, Khaplanov A, Kmiecik M, Kojouharov I, Kumar R, Kurz N, Maj A, Mandal S, Montes F, Martinez-Pinedo G, Myalski S, Prokopowicz W, Schaffner H, Simpson GS, Steer SJ, Tashenov S, Wieland O, Wollersheim HJ (2009) Spherical proton-neutron structure of isomeric states in Cd-128, PHYSICAL REVIEW C 79 (1) ARTN 011301 AMER PHYSICAL SOC
Alharbi T, Mason PJR, Regan PH, Marginean N, Podolyak Z, Algora A, Alazemi N, Bruce AM, Britton R, Bunce MR, Bucurescu D, Cooper N, Deleanu D, Filipescu D, Gelletly W, Ghita D, Glodariu T, Ilie G, Kisyov S, Lintott J, Lalkovski S, Liddick S, Mihai C, Mulholland K, Marginean R, Negret A, Nakhostin M, Roberts OJ, Rice S, Smith JF, Stroe L, Sava T, Townsley C, Wilson E, Werner V, Zhekova M, Zamfir NV (2012) Electromagnetic Transition Rate Measurements in the N=80 Isotone, Ce-138, RUTHERFORD CENTENNIAL CONFERENCE ON NUCLEAR PHYSICS, 2011 381 IOP PUBLISHING LTD
Yuan C, Liu Z, Xu F, Walker PM, Podolyak Z, Xu C, Ren ZZ, Ding B, Liu XY, Xu HS, Zhang YH, Zhou XH, Zuo W (2016) Isomerism in the ?south-east? of 132Sn and a predicted neutron-decaying isomer in 129Pd, Physics Letters B 762 pp. 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 ³ 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.
Lalkovski S, Ivanova D, Stefanova EA, Korichi A, Petkov P, Kownacki J, Kutsarova T, Minkova A, Bazzacco D, Bergström M, Görgen A, Herskind B, Hübel H, Jansen A, Kisyov S, Khoo TL, Kondev FG, Lopez-Martens A, Podolyák Z, Schönwasser G, Yordanov O (2014) Coexisting structures in Ru 105, Physical Review C - Nuclear Physics 89 (6)
New positive-parity states, having a bandlike structure, were observed in Ru105. The nucleus was produced in an induced fission reaction, and the prompt ³-rays, emitted from the fragments, were detected by the EUROBALL III multidetector array. The partial scheme of excited Ru105 levels is analyzed within the triaxial-rotor-plus-particle approach. © 2014 American Physical Society.
Modamio V, Jungclaus A, Podolyak Z, Shi Y, Xu FR, Algora A, Bazzacco D, Escrig D, Fraile LM, Lenzi S, Marginean N, Martinez T, Napoli DR, Schwengner R, Ur CA (2009) Identification of yrast high-K intrinsic states in Os-188, PHYSICAL REVIEW C 79 (2) ARTN 024310 AMER PHYSICAL SOC
Podolyak Z (2008) From RISING to HISPEC/DESPEC, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS 266 (19-20) pp. 4589-4594 ELSEVIER SCIENCE BV
Pfutzner M, Regan PH, Walker PM, Podolyak Z, Caamano M, Gerl J, Hellstrom M, Mayet P, Mineva MN (2001) Population of high spin states in relativistic fragmentation, ACTA PHYSICA POLONICA B 32 (9) pp. 2507-2518 ACTA PHYSICA POLONICA B, JAGELLONIAN UNIV, INST PHYSICS
Nishimura N, Podolyak Z, Fang D-L, Suzuki T (2016) Impact of the first-forbidden beta decay on the production of A similar to 195 r-process peak, PHYSICS LETTERS B 756 pp. 273-277 ELSEVIER SCIENCE BV
Morales AI, Benlliure J, Górska M, Grawe H, Verma S, Regan PH, Podolyák Z, Pietri S, Kumar R, Casarejos E, Algora A, Alkhomashi N, Álvarez-Pol H, Benzoni G, Blazhev A, Boutachkov P, Bruce AM, Cáceres LS, Cullen IJ, Denis Bacelar AM, Doornenbal P, Estévez-Aguado ME, Farrelly G, Fujita Y, Garnsworthy AB, Gelletly W, Gerl J, Grebosz J, Hoischen R, Kojouharov I, Kurz N, Lalkovski S, Liu Z, Mihai C, Molina F, Mücher D, Prokopowicz W, Rubio B, Schaffner H, Steer SJ, Tamii A, Tashenov S, Valiente-Dobón JJ, Walker PM, Wollersheim HJ, Woods PJ (2013) ²-delayed ³-ray spectroscopy of 203,204Au and 200-202Pt, Physical Review C - Nuclear Physics 88 (1)
The ² decay of five heavy, neutron-rich nuclei, 203,204Pt and 200-202Ir, has been investigated following relativistic cold fragmentation reactions of lead projectiles using the FRS+RISING setup at GSI. This paper reports on the study of the low-lying states in the decay daughter nuclei 203,204Au and 200-202Pt. The characteristic ³ rays for each nucleus have been determined using ²-delayed ³-ray spectroscopy. Tentative level schemes, relative intensities, and apparent ² feedings are provided. These data are compared with shell-model calculations, which indicate a substantial contribution to the total ² strength from high-energy first-forbidden ²-decay transitions in this mass region. © 2013 American Physical Society.
Wheldon C, Walker PM, Chowdhury P, Shestakova I, D'Alarcao R, Ahmad I, Carpenter MP, Cullen DM, Janssens RVF, Khoo TL, Kondev FG, Lister CJ, Pearson CJ, Podolyak Z, Seweryniak D, Wiedenhoever I (2001) First observation of a rotational band in neutron-rich Lu-180, JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS 27 (2) pp. L13-L17 IOP PUBLISHING LTD
Musumarra A, Farinon F, Nociforo C, Geissel H, Baur G, Behr K-H, Bonasera A, Bosch F, Boutin D, Brünle A, Chen L, Del Zoppo A, Dimopoulou C, Di Pietro A, Faestermann T, Figuera P, Hagino K, Janik R, Karagiannis C, Kienle P, Kimura S, Knöbel R, Kojouharov I, Kozhuharov C, Kuboki T, Kurcewicz J, Kurz N, Langanke K, Lattuada M, Litvinov SA, Litvinov YA, Martinez-Pinedo G, Mazzocco M, Montes F, Motizuki Y, Nolden F, Ohtsubo T, Okuma Y, Patyk Z, Pellegritf MG, Pla W, Pietri S, Podolyak Z, Prochazka A, Scheidenberger C, Scuderf V, Sitar B, Steck M, Strmen P, Sun B, Suzuki T, Szarka I, Torresi D, Weick H, Winfield JS, Winkler M, Wollersheim HJ, Yamaguchi T (2009) Electron screening effects on a-decay, AIP Conference Proceedings 1165 pp. 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 ±?decay by measuring Q?values and ±?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 ±?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 Q±?value measurements of the corresponding neutrals have been performed directly at the FRS, by implanting the separated ions into an active Silicon stopper.
Caceres L, Sohler D, Grevy S, Force C, Sorlin O, Dombradi Z, Gaudefroy L, Achouri NL, Angelique JC, Azaiez F, Bayborodin D, Bastin B, Borcea R, Bourgeois C, Buta A, Buerger A, Chapman R, Dalouzy JC, Dlouhy Z, Drouard A, Elekes Z, Franchoo S, Iacob S, Laurent B, Lazar M, Liang X, Lienard E, Mrazek J, Nalpas L, Negoita F, Orr NA, Penionzhkevich Y, Podolyak Z, Pougheon F, Roussel-Chomaz P, Saint-Laurent MG, Stanoiu M, Stefan I, Nowacki F, Poves A (2011) SHELLS AND SHAPES IN THE S-44 NUCLEUS, ACTA PHYSICA POLONICA B 42 (3-4) pp. 533-536 WYDAWNICTWO UNIWERSYTETU JAGIELLONSKIEGO
Pietri S, Jungclaus A, Gorska M, Grawe H, Pfuetzner M, Caceres L, Detistov P, Lalkovski S, Modamio V, Podolyak Z, Regan PH, Rudolph D, Walker J, Werner-Malento E, Bednarczyk P, Doornenbal P, Geissel H, Gerl J, Grebosz J, Kojouharov I, Kurz N, Prokopowicz W, Schaffner H, Wollersheim HJ, Andgren K, Benlliure J, Benzoni G, Bruce AM, Casarejos E, Cederwall B, Crespi FCL, Hadinia B, Hellstrom M, Hoischen R, Ilie G, Khaplanov A, Kmiecik M, Kumar R, Maj A, Mandal S, Montes F, Myalski S, Simpson G, Steer SJ, Tashenov S, Wieland O (2011) First observation of the decay of a 15(-) seniority v=4 isomer in Sn-128, PHYSICAL REVIEW C 83 (4) ARTN 044328 AMER PHYSICAL SOC
Alharbi T, Regan PH, Mason PJR, MÎrginean N, Podolyák Z, Bruce AM, Simpson EC, Algora A, Alazemi N, Britton R, Bunce MR, Bucurescu D, Cooper N, Deleanu D, Filipescu D, Gelletly W, GhitÎ D, Glodariu T, Ilie G, Kisyov S, Lintott J, Lalkovski S, Liddick S, Mihai C, Mulholland K, MÎrginean R, Negret A, Nakhostin M, Nita CR, Roberts OJ, Rice S, Smith JF, Stroe L, Sava T, Townsley C, Wilson E, Werner V, Zhekova M, Zamfir NV (2013) Electromagnetic transition rates in the N=80 nucleus 58138Ce, Physical Review C - Nuclear Physics 87 (1)
The half-life of the IÀ=6+ yrast state at Ex=2294 keV in 138Ce has been measured as T1/2=880(19) ps using the fast-timing ³-ray coincidence method with a mixed LaBr3(Ce)- HPGe array. The excited states in 138Ce have been populated by the 130Te(12C,4n) fusion-evaporation reaction at an incident beam energy of 56 MeV. The extracted B(E2;61+’41+)=0.101(24) W.u. value is compared with the predictions of truncated basis shell model calculations and with the systematics of the region. This shows an anomalous behavior compared to the neighboring isotonic and isotopic chains. Half-lives for the yrast 5-, 11+ and 14+ states in 138Ce have also been determined in this work. © 2013 American Physical Society.
Abuhadi N, Bradley D, Katarey D, Podolyak Z, Sassi S (2014) Investigation of the quantitative accuracy of 3D iterative reconstruction algorithms in comparison to filtered back projection method: A phantom study, Progress in Biomedical Optics and Imaging - Proceedings of SPIE 9033
Introduction: Single-Photon Emission Computed Tomography (SPECT) is used to measure and quantify radiopharmaceutical distribution within the body. The accuracy of quantification depends on acquisition parameters and reconstruction algorithms. Until recently, most SPECT images were constructed using Filtered Back Projection techniques with no attenuation or scatter corrections. The introduction of 3-D Iterative Reconstruction algorithms with the availability of both computed tomography (CT)-based attenuation correction and scatter correction may provide for more accurate measurement of radiotracer bio-distribution. The effect of attenuation and scatter corrections on accuracy of SPECT measurements is well researched. It has been suggested that the combination of CT-based attenuation correction and scatter correction can allow for more accurate quantification of radiopharmaceutical distribution in SPECT studies (Bushberg et al., 2012). However, The effect of respiratory induced cardiac motion on SPECT images acquired using higher resolution algorithms such 3-D iterative reconstruction with attenuation and scatter corrections has not been investigated. Aims: To investigate the quantitative accuracy of 3D iterative reconstruction algorithms in comparison to filtered back projection (FBP) methods implemented on cardiac SPECT/CT imaging with and without CT-Attenuation and scatter corrections. Also to investigate the effects of respiratory induced cardiac motion on myocardium perfusion quantification. Lastly, to present a comparison of spatial resolution for FBP and ordered subset expectation maximization (OSEM) Flash 3D together with and without respiratory induced motion, and with and without attenuation and scatter correction. Methods: This study was performed on a Siemens Symbia T16 SPECT/CT system using clinical acquisition protocols. Respiratory induced cardiac motion was simulated by imaging a cardiac phantom insert whilst moving it using a respiratory motion motor inducing cyclical elliptical motion of the apex of the cardiac insert. Results: Our analyses revealed that the use of the Flash 3-D reconstruction algorithm without scatter or attenuation correction has improved Spatial Resolution by 30% relative to FBP. Reduction in Spatial Resolution due to respiratory induced motion was 12% and 38% for FBP and Flash 3-D respectively. The implementation of scatter correction has resulted in a reduction in resolution by up to 6%. The application of CT-based att
Bastin B, Grevy S, Sohler D, Sorlin O, Dombradi Z, Achouri NL, Angelique JC, Azaiez F, Baiborodin D, Borcea R, Bourgeois C, Buta A, Buerger A, Chapman R, Dalouzy JC, Dlouhy Z, Drouard A, Elekes Z, Franchoo S, Iacob S, Laurent B, Lazar M, Liang X, Lienard E, Mrazek J, Nalpas L, Negoita F, Orr NA, Penionzhkevich Y, Podolyak Z, Pougheon F, Roussel-Chomaz P, Saint-Laurent MG, Stanoiu M, Stefan I, Nowacki F, Poves A (2007) Collapse of the N=28 shell closure in Si-42, PHYSICAL REVIEW LETTERS 99 (2) ARTN 022503 AMERICAN PHYSICAL SOC
Podolyak Z, Farrelly GF, Regan PH, Garnsworthy AB, Steer SJ, Gorska M, Benlliure J, Casarejos E, Pietri S, Gerl J, Wollersheim HJ, Kumar R, Molina F, Algora A, Alkhomashi N, Benzoni G, Blazhev A, Boutachkov P, Bruce AM, Caceres L, Cullen IJ, Bacelar AMD, Doornenbal P, Estevez ME, Fujita Y, Gelletly W, Geissel H, Grawe H, Grebosz J, Hoischen R, Kojouharov I, Lalkovski S, Liu Z, Maier KH, Mihai C, Muecher D, Rubio B, Schaffner H, Tamii A, Tashenov S, Valiente-Dobon JJ, Walker PM, Woods PJ (2009) Proton-hole excitation in the closed shell nucleus Au-205, PHYSICS LETTERS B 672 (2) pp. 116-119 ELSEVIER SCIENCE BV
Gurgi LA, Regan PH, Daniel T, Podolyak Z, Bruce A, Mason P, MÎrginean N, MÎrginean R, Werner V, Alharbi T, Alkhomashi N, Bajoga A, Britton R, CÎta-Danil I, Carroll R, Deleanu D, Bucurescu D, Florea N, Gheorghe I, Ghita D, Lice R, Mihai C, Mulholland K, Negret A, Olacel A, Roberts O, Sava T, Söderström P, Stroe L, Suvaila R, Toma S, Wilson E, Wood R (2016) Nanosecond lifetime measurements of IÀ¼9/2- intrinsic excited states and low-lying B(E1)strengths in 183Re using combined HPGe-LaBr3 coincidence spectroscopy, Radiation Physics and Chemistry 137 pp. 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.
Zhang YH, Podolyak Z, de Angelis G, Gadea A, Ur C, Lunardi S, Marginean N, Rusu C, Schwengner R, Kroll T, Napoli DR, Menegazzo R, Bazzacco D, Farnea E, Lenzi S, Martinez T, Axiotis M, Tonev D, Gelletly W, Langdown S, Regan PH, Dobon JJV, von Oertzen W, Rubio B, Quintana B, Medina N, Broda R, Bucurescu D, Ionescu-Bujor M, Iordachescu A (2004) Stability of the N=50 shell gap in the neutron-rich Rb, Br, Se, and Ge isotones, PHYSICAL REVIEW C 70 (2) ARTN 024301 AMERICAN PHYSICAL SOC
Alharbi T, Regan PH, MYrginean N, Podolyák Z, Roberts OJ, Bruce AM, Alkhomashi N, Britton R, Bucurescu D, Deleanu D, Filipescu D, GhitY D, Glodariu T, Mihai C, Mulholland K, Lica R, MYrginean R, Nakhostin M, Negret A, Nita CR, Stroe L, Sava T, Townsley C, Zamfir NV (2015) Lifetime of the yrast IÀ=5- state and E1 hindrance in the transitional nucleus Ce 58136, Physical Review C - Nuclear Physics 91 (2)
© 2015 American Physical Society.The half-lives of the IÀ=5- and IÀ=7- yrast states with Ex=1978 keV and Ex=2307 keV in the N=78 isotone Ce136, have been measured to be 496(23) ps and 270(24) ps, respectively, using the coincident fast-timing spectroscopy technique following population by a Sn124(O16,4n) fusion-evaporation reaction at an incident beam energy of 68 MeV. The extracted B(E1;5-’4+)=1.8(3)×10-6 W.u. value is compared with the systematics of the region and is found to be in line with typical E1 strengths for single-particle-type decays, rather than showing any evidence for the additional E1 decay hindrance associated with K-quantum number violation in axially deformed systems observed in lighter Ce isotopes.
Domingo-Pardo C, Caballero-Folch R, Agramuntl J, Algora A, Arcones A, Amei F, Ayyad Y, Benlliure J, Bowry M, Calvino F, Cano-Ott D, Cortes G, Davinson T, Lmann ID, Estrade A, Evdokimov A, Faestermann T, Farinon F, Galaviz D, Garcia-Rios A, Geissel H, Geety W, Gernhaeuser R, Gomez-Hornillos MB, Guerrero C, Heil M, Hinke C, Knoebel R, Kojouharov I, Kurcewicz J, Kurz N, Litvinov Y, Maier L, Marganiec J, Marta M, Martinez T, Martinez-Pinedo G, Meyer BS, Montes F, Mukha I, Napoli DR, Nociforo C, Paradela C, Pietri S, Podolyak Z, Prochazka A, Rice S, Riego A, Rubio B, Schaffner H, Scheidenberger C, Smith K, Sokol E, Steiger K, Sun B, Tain JL, Takechi M, Testov D, Weick H, Wilson E, Winfield JS, Wood R, Woods P, Yeremin A (2016) Approaching the precursor nuclei of the third r-process peak with RIBs, NUCLEAR PHYSICS IN ASTROPHYSICS VI (NPA6) 665 IOP PUBLISHING LTD
Al-Dahan N, Podolyak Z, Regan PH, Gorska M, Grawe H, Maier KH, Gerl J, Pietri SB, Wollersheim HJ, Alkhomashi N, Deo AY, Bacelar AMD, Farrelly G, Steer SJ, Bruce AM, Boutachkov P, Domingo-Pardo C, Algora A, Benlliure J, Bracco A, Calore E, Casarejos E, Cullen IJ, Detistov P, Dombradi Z, Doncel M, Farinon F, Gelletly W, Geissel H, Goel N, Grebosz J, Hoischen R, Kojouharov I, Kurz N, Lalkovski S, Leoni S, Molina F, Montanari D, Morales AI, Musumarra A, Napoli DR, Nicolini R, Nociforo C, Prochazka A, Prokopowicz W, Rubio B, Rudolph D, Schaffner H, Strmen P, Szarka I, Swan T, Thomas JS, Valiente-Dobon JJ, Verma S, Walker PM, Weick H (2009) Nuclear structure "southeast" of Pb-208: Isomeric states in Hg-208 and Tl-209, PHYSICAL REVIEW C 80 (6) ARTN 061302 AMER PHYSICAL SOC
Gorska M, Caceres L, Grawe H, Pfuetzner M, Jungclaus A, Pietri S, Werner-Malento E, Podolyak Z, Regan PH, Rudolph D, Detistov R, Lalkovski S, Modamio V, Walker J, Beck T, Bednarczyk P, Doornenbal P, Geissel H, Gerl J, Grebosz J, Hoischen R, Kojouharov I, Kurz N, Prokopowicz W, Schaffner H, Weick H, Wollersheim H-J, Andgren K, Benlliure J, Benzoni G, Bruce AM, Casarejos E, Cederwall B, Crespi FCL, Hadinia B, Hellstrom M, Ilie G, Khaplanov A, Kmiecik M, Kumar R, Maj A, Mandal S, Montes F, Myalski S, Simpson GS, Steer SJ, Tashenov S, Wieland O, Dombradi Z, Reiter R, Sohler D (2009) Evolution of the N=82 shell gap below Sn-132 inferred from core excited states in In-131, PHYSICS LETTERS B 672 (4-5) pp. 313-316 ELSEVIER SCIENCE BV
Gómez-Hornillos MB, Rissanen J, Taín JL, Algora A, Cano-Ott D, Agramunt J, Gorlychev V, Caballero R, Martínez T, Achouri L, Äysto J, Cortés G, Elomaa VV, Eronen T, García A, Hakala J, Jokinen A, Karvonen P, Kolhinen VS, Moore I, Parlog M, Penttilä H, Podolyak Z, Pretel C, Reponen M, Sonnenschein V, Valencia E (2011) First measurements with the BEta deLayEd neutron detector (BELEN-20) at JYFLTRAP, Journal of Physics: Conference Series 312 (SECTION 5)
Morales AI, Benzoni G, Al-Dahan N, Vergani S, Podolyak Z, Regan PH, Swan TPD, Valiente-Dobon JJ, Bracco A, Boutachkov P, Crespi FCL, Gerl J, Gorska M, Pietri S, Walker PM, Wollersheim H-J (2015) First measurement of the beta-decay half-life of Au-206, EPL 111 (5) ARTN 52001 EPL ASSOCIATION, EUROPEAN PHYSICAL SOCIETY
Orce JN, Bruce AM, Emmanouilidis A, Wheldon C, Xu FR, Walker PM, Caamano M, Podolyak Z, El-Masri H, Stevenson PD, Byrne AP, Dracoulis GD, Hazel JC, Kibedi T, Cullen DM (2003) Interplay between K-isomerism and gamma-softness in Xe-128, ACTA PHYSICA POLONICA B 34 (4) pp. 2253-2256 ACTA PHYSICA POLONICA B, JAGELLONIAN UNIV, INST PHYSICS
Valencia E, Algora A, Tain JL, Rice S, Agramunt J, Zakari-Issoufou AA, Porta A, Fallot M, Jordan MD, Molina F, Estevez E, Bowry M, Bui VM, Caballero-Folch R, Cano-Ott D, Eloma V, Eronen T, Garcia A, Gomez-Hornillos MB, Gorlychev V, Hakala J, Jokinen A, Kondev FG, Martinez T, Moore I, Rissanen J, Äystö J, Penttilä H, Kankainen A, Rubio B, Gelletly W, Perez A, Podolyak Z, Regan PH, Farrelly GF, Weber C, Mendoza E (2013) Total absorption ³-ray spectroscopy of beta delayed neutron emitters, AIP Conference Proceedings 1541 pp. 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.
Denis Bacelar AM, Bruce AM, Podolyák Z, Al-Dahan N, Alkhomashi N, Cullen IJ, Deo AY, Farrelly GF, Gelletly W, Regan PH, Steer SJ, Swan TPD, Walker PM, Górska M, Pietri S, Ricciardi MV, Boutachkov P, Domingo-Pardo C, Farinon F, Geissel H, Gerl J, Goel N, Gr)bosz J, Hoischen R, Kojouharov I, Kurz N, Nociforo C, Prochazka A, Prokopowicz W, Schmidt K-H, Schaffner H, Weick H, Wollersheim HJ, Detistov P, Algora A, Molina F, Rubio B, Dombradi Z, Benlliure J, Morales AI, Verma S, Bracco A, Leoni S, Montanari D, Nicolini R, Calore E, Napoli DR, Valiente-Dobón JJ, Casarejos E, Doncel M, Rudolph D, Musumarra A, Steiger K, Strmen P, Szarka I, Lalkovski S (2013) The population of metastable states as a probe of relativistic-energy fragmentation reactions, Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Isomeric ratios have been measured for high-spin states in
Po,
At,
Rn,
Fr,
Ra, and
Ac following the projectile fragmentation of a 1 A GeV 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 ¼s and spin values up to 55 / 2 ? 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. All rights reserved.
Podolyák Z (2012) Prolate-oblate shape transition in heavy neutron-rich nuclei, Journal of Physics: Conference Series 381 (1)
A large amount of experimental information was obtained on heavy neutron-rich nuclei in the Hf-Hg region during the last decade. In the majority of the cases these nuclei were populated in relativistic energy fragmentation and studied via isomeric and ² decays. In addition, deep-inelastic studies gave information to nuclei close to stability. The experimental data were used to establish the sign of quadrupole deformation, prolate or oblate. In the present paper this information is compared with two global theoretical calculations, one which is constrained to axial symmetry and one which considers triaxiality. The prolate-oblate transitional region was reached for (Z=76) Os and Ir (Z=77), as proved by the observation of oblate isomeric states in 197,198,199Os and 201Ir. For Ta (Z=73) and W (Z=74) isotopes no clear evidence of oblate deformation exists so far, with 192W and 189Ta being the most neutron-rich isotopes with spectroscopic information. © Published under licence by IOP Publishing Ltd.
Calinescu S, Caceres L, Grevy S, Sorlin O, Sohler D, Stanoiu M, Negoita F, Clement E, Astabatyan R, Borcea C, Borcea R, Bowry M, Catford W, Dombradi Z, Franchoo S, Garcia R, Gillibert R, Guerin H, Thomas JC, Kuti I, Lukyanov S, Lepailleur A, Maslov V, Morfouace P, Mrazek J, Niikura M, Perrot L, Podolyak Z, Petrone C, Penionzhkevich Y, Roger T, Rotaru F, Stefan I, Vajta Z, Wilson E (2014) STUDY OF THE NEUTRON-RICH ISOTOPE Ar-46 THROUGH INTERMEDIATE ENERGY COULOMB EXCITATION, ACTA PHYSICA POLONICA B 45 (2) pp. 199-204 WYDAWNICTWO UNIWERSYTETU JAGIELLONSKIEGO
Zhang YH, Liu ML, de Angelis G, Podolyak Z, Guo WT, Gadea A, Ur C, Marginean N, Rusu C, Schwengner R, Napoli DR, Menegazzo R, Lunardi S, Bazzacco D, Martinez T, Axiotis M, Gargano A, Lenzi SM, Brandolini F, von Oertzen W (2004) Level scheme of Mo-94 at high angular momentum, HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION 28 (9) pp. 941-946 SCIENCE CHINA PRESS
Podolyak Z, Mohammadi S, De Angelis G, Zhang YH, Axiotis M, Bazzacco D, Bizzeti PG, Brandolini F, Broda R, Bucurescu D, Farnea E, Gelletly W, Gadea A, Ionescu-Bujor M, Iordachescu A, Kroll T, Langdown SD, Lunardi S, Marginean N, Martinez T, Medina NH, Quintana B, Regan PH, Rubio B, Ur CA, Valiente-Dobon JJ, Walker PM (2004) Structure of neutron-rich nuclei from deep-inelastic reactions, INTERNATIONAL JOURNAL OF MODERN PHYSICS E-NUCLEAR PHYSICS 13 (1) pp. 123-126 WORLD SCIENTIFIC PUBL CO PTE LTD
Lorusso G, Shearman R, Regan PH, Judge SM, Bell S, Collins SM, Larijani C, Ivanov P, Jerome SM, Keightley JD, Lalkovski S, Pearce AK, Podolyak Z (2015) Development of the NPL gamma-ray spectrometer NANA for traceable nuclear decay and structure studies, APPLIED RADIATION AND ISOTOPES 109 pp. 507-511 PERGAMON-ELSEVIER SCIENCE LTD
Akber A, Reed MW, Walker PM, Litvinov YA, Lane GJ, Kibedi T, Blaum K, Bosch F, Brandau C, Carroll JJ, Cullen DM, Cullen IJ, Deo AY, Detwiler B, Dimopoulou C, Dracoulis GD, Farinon F, Geissel H, Haettner E, Heil M, Kempley RS, Knoebel R, Kozhuharov C, Kurcewicz J, Kuzminchuk N, Litvinov S, Liu Z, Mao R, Nociforo C, Nolden F, Plass WR, Podolyak Z, Prochazka A, Scheidenberger C, Shubina D, Steck M, Stoehlker T, Sun B, Swan TPD, Trees G, Weick H, Winckler N, Winkler M, Woods PJ, Yamaguchi T (2015) Increased isomeric lifetime of hydrogen-like Os-192m, PHYSICAL REVIEW C 91 (3) ARTN 031301 AMER PHYSICAL SOC
Morales AI, Benzoni G, Gottardo A, Valiente-Dobón JJ, Blasi N, Bracco A, Camera F, Crespi FCL, Corsi A, Leoni S, Million B, Nicolini R, Wieland O, Gadea A, Lunardi S, Górska M, Regan PH, Podolyák Z, Pfützner M, Pietri S, Boutachkov P, Weick H, Grebosz J, Bruce AM, Núñez JA, Algora A, Al-Dahan N, Ayyad Y, Alkhomashi N, Allegro PRP, Bazzacco D, Benlliure J, Bowry M, Bunce M, Casarejos E, Cortes ML, Bacelar AMD, Deo AY, De Angelis G, Domingo-Pardo C, Doncel M, Dombradi Z, Engert T, Eppinger K, Farrelly GF, Farinon F, Farnea E, Geissel H, Gerl J, Goel N, Gregor E, Habermann T, Hoischen R, Janik R, Klupp S, Kojouharov I, Kurz N, Mandal S, Menegazzo R, Mengoni D, Napoli DR, Naqvi F, Nociforo C, Prochazka A, Prokopowicz W, Recchia F, Ribas RV, Reed MW, Rudolph D, Sahin E, Schaffner H, Sharma A, Sitar B, Siwal D, Steiger K, Strmen P, Swan TPD, Szarka I, Ur CA, Walker PM, Wollersheim HJ (2014) ² -decay studies of neutron-rich Tl, Pb, and Bi isotopes, Physical Review C - Nuclear Physics 89 (1)
The fragmentation of relativistic uranium projectiles has been exploited at the Gesellschaft für Schwerionenforschung laboratory to investigate the ² decay of neutron-rich nuclei just beyond 208Pb. This paper reports on ²-delayed ³ decays of 211-213Tl, 215Pb, and 215-219Bi de-exciting states in the daughters 211-213Pb, 215Bi, and 215-219Po. The resulting partial level schemes, proposed with the help of systematics and shell-model calculations, are presented. The role of allowed Gamow-Teller and first-forbidden ² transitions in this mass region is discussed. © 2014 American Physical Society.
Stanoiu M, Sohler D, Sorlin O, Azaiez F, Dombradi Z, Brown BA, Belleguic M, Borcea C, Bourgeois C, Dlouhy Z, Elekes Z, Fulop Z, Grevy S, Guillemaud-Mueller D, Ibrahim F, Kerek A, Krasznahorkay A, Lewitowicz M, Lukyanov SM, Mandal S, Mrazek J, Negoita F, Penionzhkevich Y-E, Podolyak Z, Roussel-Chomaz P, Saint-Laurent MG, Savajols H, Sletten G, Timar J, Timis C, Yamamoto A (2008) Disappearance of the N=14 shell gap in the carbon isotopic chain, PHYSICAL REVIEW C 78 (3) ARTN 034315 AMER PHYSICAL SOC
Valencia E, Algora A, Tain JL, Rice S, Agramunt J, Zakari-Issoufou AA, Äystö J, Bowry M, Bui VM, Caballero-Folch R, Cano-Ott D, Eloma V, Eronen T, Estevez E, Farrelly GF, Fallot M, Garcia A, Gelletly W, Gomez-Hornillos MB, Gorlychev V, Hakala J, Jokinen A, Jordan MD, Kankainen A, Kondev FG, Martinez T, Mendoza E, Molina F, Moore I, Perez A, Podolyak Z, Penttilä H, Porta A, Regan PH, Rissanen J, Rubio B, Weber C (2014) Gamma/neutron competition above the neutron separation energy in delayed neutron emitters, EPJ Web of Conferences 66
To study the ²-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 ²-strength distribution below the neutron separation energy (Sn) and the ³/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 ³-branching ratio above Sn. © Owned by the authors, published by EDP Sciences, 2014.
Kumar R, Molina FG, Pietri S, Casarejos E, Algora A, Benlliure J, Doornenbal P, Gerl J, Gorska M, Kojouharov I, Podolyak Z, Prokopowicz W, Regan PH, Rubio B, Schaffner H, Tashenov S, Wollersheim H-J (2009) Testing of a DSSSD detector for the stopped RISING project, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 598 (3) pp. 754-758 ELSEVIER SCIENCE BV
Podolyak Z, Gladnishki KA, Gerl J, Hellstrom M, Kopatch Y, Mandal S, Gorska M, Regan PH, Wollersheim HJ, Schmidt KH, Yordanov O (2004) Angular momentum population in projectile fragmentation, LABYRINTH IN NUCLEAR STRUCTURE 701 pp. 280-284 AMER INST PHYSICS
Flavigny F, Doornenbal P, Obertelli A, Delaroche J, Girod M, Libert J, Rodriguez T, Authelet G, Baba H, Calvet D, Chateau F, Chen S, Corsi A, Delbart A, Gheller J, Giganon A, Gillibert A, Lapoux V, Motobayashi T, Niikura M, Paul N, Rousse J, Sakura H, Santamaria C, Steppenbeck D, Taniuchi R, Uesaka T, Ando T, Arici T, Blazhev A, Browne F, Bruce A, Carroll R, Chung L, Cortes M, Dewald M, Ding B, Franchoo S, Gorska M, Gottardo A, Jungclaus A, Lee J, Lettmann M, Linh B, Liu J, Liu Z, Lizarazo C, Momiyama S, Moschner K, Nagamine S, Nakatsuka N, Nita C, Nobs C, Olivier L, Orlandi R, Patel Z, Podolyak Z, Rudigier M, Saito T, Shand C, Soderstrom P, Stefan I, Vaquero V, Werner V, Wimmer K, Xu Z (2017) Shape Evolution in Neutron-rich Krypton Isotopes beyond N = 60 : First spectroscopy of 98;100Kr, Physical Review Letters 118 (24) 242501 American Physical Society
We report on the first ³-ray spectroscopy of low-lying states in neutron-rich 98,100Kr isotopes obtained from 99,101Rb(p,2p) reactions at
Pietri S, Regan PH, Podolyak Z, Rudolph D, Gorska M, Jungclaus A, Pfuetzner M, Garnsworthy AB, Steer SJ, Caceres L, Werner-Malento E, Hoischen R, Gerl J, Kojouharov I, Schaffner H, Wollersheim HJ, Becker F, Bednarczyk P, Doornenbal P, Geissel H, Grebosz J, Kelic A, Kurz N, Montes F, Prokopowicz W, Saito T, Tashenov S, Heinz A, Kurtukian-Nieto T, Benzoni G, Hellstrom M, Andersson L-L, Atanasova L, Balabanski DL, Bentley MA, Blank B, Blazhev A, Brandau C, Brown JR, Bruce AM, Camera F, Catford WN, Cullen IJ, Dombradi Z, Estevez E, Fahlander C, Gelletly W, Ilie G, Johansson EK, Jolie J, Jones GA, Kmiecik M, Kondev FG, Lalkovski S, Liu Z, Maj A, Myalski S, Shizuma T, Simons AJ, Schwertel S, Walker PM, Wieland O (2007) First results from the stopped beam isomer rising campaign at GSI, ACTA PHYSICA POLONICA B 38 (4) pp. 1255-1264 ACTA PHYSICA POLONICA B, JAGELLONIAN UNIV, INST PHYSICS
Kutsarova T, Stefanova EA, Minkova A, Lalkovski S, Korichi A, Lopez-Martens A, Hannachi F, Huebel H, Goergen A, Jansen A, Schoenwasser G, Khoo TL, Herskind B, Bergstrom M, Bazzacco D, Podolyak Z (2009) High-spin level scheme of Pb-194, PHYSICAL REVIEW C 79 (1) ARTN 014315 AMER PHYSICAL SOC
Régis J, Jolie J, Saed-Samii N, Warr N, Pfeiffer M, Blanc A, Jentschel M, Köster U, Mutti P, Soldner T, Simpson G, Drouet F, Vancraeyenest A, de France G, Clément E, Stezowski O, Ur C, Urban W, Regan P, Podolyak Z, Larijani C, Townsley C, Carroll R, Wilson E, Fraile L, Mach H, Paziy V, Olaizola B, Vedia V, Bruce A, Roberts O, Smith J, Scheck M, Kröll T, Hartig A, Ignatov A, Ilieva S, Lalkovski S, Korten W, M?rginean N, Otsuka T, Shimizu N, Togashi T, Tsunoda Y (2017) Abrupt shape transition at neutron number N=60 : B(E2) values in Sr94,96,98 from fast ³?³ timing, Physical Review C 95 (5) 054319 pp. 054319-1 American Physical Society
Lifetimes of low-lying yrast states in neutron-rich 94,96,98Sr have been measured by Germanium-gated ³?³ 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.
Söderström P, Walker PM, Wu J, Liu H, Regan PH, Watanabe H, Doornenbal P, Korkulu Z, Lee P, Liu J, Lorusso G, Nishimura S, Phong V, Sumikama T, Xu F, Yagi A, Zhang G, Ahn D, Alharbi T, Baba H, Browne F, Bruce A, Carroll R, Chae K, Dombradi Z, Estrade A, Fukuda N, Griffin C, Ideguchi E, Inabe N, Isobe T, Kanaoka H, Kanaya S, Kojouharov I, Kondev F, Kubo T, Kubono S, Kurz N, Kuti I, Lalkovski S, Lane G, Lee E, Lee C, G. Lotay G, Moon C, Nishizuka I, Nita C, Odahara A, Patel Z, Podolyak Z, Roberts O, Sakurai H, Schaffner H, Shand C, Suzuki H, Takeda H, Terashima S, Vajta Z, Valiente-Dòbon J, Xui Z (2016) Collective And Single-particle Structures In The Neutron-rich Doubly Mid-shell Nucleus 170Dy, 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.
Lettmann M, Werner V, Pietralla N, Doornenbal P, Obertelli A, Rodríguez T, Sieja K, Authelet G, Baba H, Calvet D, Château F, Chen S, Corsi A, Delbart A, Gheller J, Giganon A, Gillibert A, Lapoux V, Motobayashi T, Niikura M, Paul N, Roussé J, Sakurai H, Santamaria C, Steppenbeck D, Taniuchi R, Uesaka T, Ando T, Arici T, Blazhev A, Browne F, Bruce A, Caroll R, Chung L, Cortés M, Dewald M, Ding B, Flavigny F, Franchoo S, Górska M, Gottardo A, Jungclaus A, Lee J, Linh B, Liu J, Liu Z, Lizarazo C, Momiyama S, Moschner K, Nagamine S, Nakatsuka N, Nita C, Nobs C, Olivier L, Patel Z, Podolyak Z, Rudigier M, Saito T, Shand C, Söderström P, Stefan I, Vaquero V, Wimmer K, Xu Z (2017) Triaxiality of neutron-rich 84;86;88Ge from low-energy nuclear spectra, Physical Review C 96 (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.
Rice S, Algora A, Tain J, Valencia E, Agramunt J, Rubio B, Gelletly W, Regan P, Zakari-Issoufou A, Fallot M, Porta A, Rissanen J, Eronen T, Aysto J, Batist L, Bowry M, Bui V, Caballero-Folch R, Cano-Ott D, Elomaa V, Estevez E, Farrelly G, Garcia A, Gomez-Hornillos B, Gorlychev V, Hakala J, Jordan M, Jokinen A, Kolhinen V, Kondev F, Martinez T, Mendoza E, Moore I, Penttila H, Podolyak Z, Reponen M, Sonnenschein V, Sonzogni A, Sarriguren P (2017) Total Absorption Spectroscopy Study of the Beta Decay of 86Br and 91 1 Rb, Physical Review C 96 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 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.
Tu X, Kelic-Heil A, Litvinov Y, Podolyak Z, Zhang Y, Huang W, Xu H, Blaum K, Bosch F, Chen R, Walker PM (2017) Application of Isochronous Mass Spectrometry for the study of angular momentum population in projectile fragmentation reactions, Physical Review C: Nuclear Physics 95 (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.
Wu J, Nishimura S, Lorusso G, Moller P, Ideguchi E, Regan PH, Simpson G, Soderstrom P, Walker PM, Watanabe H, Xu Z, Baba H, Browne F, Daido R, Doornenbal P, Fang Y, Gey G, Isobe T, Lee P, Liu J, Li Z, Korkulu Z, Patel Z, Phong V, Rice S, Sakurai H, Sinclair L, Sumikama T, Tanaka M, Yagi A, Ye Y, Yokoyama R, Zhang G, Alharbi T, Aoi N, Bello Garrote F, Benzoni G, Bruce A, Carroll R, Chae K, Dombradi Z, Estrade A, Gottardo A, Griffin C, Kanaoka H, Kojouharov I, Kondev F, Kubono S, Kurz N, Kuti I, Lalkovski S, Lane G, Lee E, Lokotko T, Lotay GJ, Moon C, Nishibata H, Nishizuka I, Nita C, Odahara A, Podolyak Z, Roberts O, Schaffner H, Shand CM, Taprogge J, Terashima S, Vajta Z, Yoshida S (2017) 94 -Decay Half-lives of Neutron-Rich 55Cs to 67Ho: Experimental Feedback and Evaluation of the r-Process Rare-Earth Peak Formation, Physical Review Letters 118 (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.
Pragati, Deo A, Podolyak Z, Walker PM, Algora A, Rubio B, Agramunt J, Fraile L, Al-Dahan N, Alkhomashi N, Briz J, Estevez Aguado M, Farrelly G, Gelletly W, Herlert A, Köster U, Maira A (2016) On the decay of the N = 126, 213Fr nucleus, Physical Review C: Nuclear Physics 94 (6) 064316 American Physical Society
Gamma rays following the EC= + and alpha decay of the N = 126, 213Fr nucleus have been observed at the CERN isotope separator on-line (ISOLDE) facility with the help of gamma-ray and conversion electron spectroscopy. These gamma rays establish several hitherto unknown excited states in 213Rn. Also, ve new -decay branches from the 213Fr ground state have been discovered. Shell model calculations have been performed to understand the newly observed states in 213Rn.
Mason P, Podolyak Z, Marginean N, Regan PH, Stevenson PD, Werner V, Alexander T, Algora A, Alharbi T, Bowry M, Britton R, Bruce A, Bucurescu D, Bunce M, Cata-Danil G, Cata-Danil I, Cooper N, Deleanu D, Delion D, Filipescu D, Gelletly W, Ghita D, Gheorghe I, Glodariu T, Ilie G, Ivanova D, Kisyov S, Lalkovski S, Lica R, Liddick S, Marginean R, Mihai C, Mulholland K, Nita C, Negret A, Pascu S, Rice S, Roberts O, Sava T, Smith J, Soederstroem P, Stroe L, Suliman G, Suvaila R, Toma S, Townsley C, Wilson E, Wood RT, Zhekova M, Zhou C (2013) Half-life of the yrast 2(+) state in W-188: Evolution of deformation and collectivity in neutron-rich tungsten isotopes, PHYSICAL REVIEW C 88 (4) 044301 AMER PHYSICAL SOC
The half-life of the yrast I À = 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 ³ softness for 184?192W and an oblate minimum for 194W.
Wilson J, Lebois M, Qi L, Amador-Celdran P, Bleuel D, Briz J, Carroll R, Catford WN, De Witte H, Doherty D, Eloirdi R, Georgiev G, Gottardo A, Goasduff A, Hadynska-Klek K, Hauschild K, Hess M, Ingeberg V, Konstantinopoulos T, Ljungvall J, Lopez-Martens A, Lorusso G, Lozeva R, Lutter R, Marini P, Matea I, Materna T, Mathieu L, Oberstedt A, Oberstedt S, Panebianco S, Podolyak Z, Porta D, Regan PH, Reiter P, Rezynkina K, Rose S, Sahin E, Seidlitz M, Shearman R, Siebeck B, Siem S, Smith A, Tveten G, Verney D, Warr N, Zeiser F, Zielinska M (2017) PRODUCTION AND STUDY OF NEUTRON-RICH NUCLEI USING THE LICORNE DIRECTIONAL NEUTRON SOURCE, Acta Physica Polonica B 48 (3) pp. 395-401 Pan?stwowe 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.
Wang F, Sun B, Liu Z, Page R, Qi C, Scholey C, Ashley S, Bianco L, Cullen I, Darby I, Eeckhaudt S, Garnsworthy A, Gelletly W, Gomez-Hornillos M, Grahn T, Greenlees P, Jenkins D, Jones G, Jones P, Joss D, Julin R, Juutinen S, Ketelhut S, Khan S, Kishada A, Leino M, Niikura M, Nyman M, Pakarinen J, Pietri S, Podolyak Z, Rahkila P, Rigby S, Saren J, Shizuma T, Sorri J, Steer S, Thompson N, Uusitalo J, Walker PM, Williams S, Zhang H, Zhang W, Zhu L (2017) Spectroscopic factor and proton formation probability for the d3/2 proton emitter 151mLu, Physics Letters B 770 pp. 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.
Daniel T, Kisyov S, Regan PH, Marginean N, Podolyak Z, Marginean R, Nomura K, Rudigier M, Mihai R, Werner V, Carroll R, Gurgi LA, Oprea A, Berry TA, Serban A, Nita C, Sotty C, Suvaila R, Turturica A, Costache C, Stan L, Olacel A, Boromiza M, Toma S (2017) ³ -ray spectroscopy of low-lying excited states and shape competition in Os 194, Physical Review C 95 (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 ³ -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 ²eff = 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.
Watanabe H, Zhang G, Yoshida K, Walker PM, Liu J, Wu J, Regan PH, Soderstrom P, Kanaoka H, Korkulu Z, Lee P, Nishimura S, Yagi A, Ahn D, Alharbi T, Baba H, Browne F, Bruce A, Fukuda R, Griffin C, Ideguchi E, Inabe N, Isobe T, Kanaya S, Kojouharov I, Kondev F, Kubo T, Kubono S, Kurz N, Kuti I, Lalkovski S, Lane; G, Lee C, Lee E, Lorusso G, Lotay GJ, Moon C, Nishizuka I, Nita C, Odahara A, Patel Z, Phong V, Podolyak Z, Roberts O, Sakurai H, Schaffner H, Shand CM, Shimizu Y, Sumikama T, Suzuki H, Takeda H, Terashima S, Vajta; Z, Valiente-Dobon J, Xu Z (2016) Long-lived K isomer and enhanced gamma vibration in the neutron-rich nucleus 172Dy: Collectivity beyond double midshell, Physics Letters B 760 (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 À = 8 ? has been identified at 1278 keV, which decays to the ground-state and ³-vibrational bands through hindered electromagnetic transitions, as well as to the daughter nucleus 172Ho via allowed ² decays. The robust nature of the K À = 8 ? isomer and the ground-state rotational band reveals an axially-symmetric structure for this nucleus. Meanwhile, the ³-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 ³ vibration is discussed in comparison with the deformed Quasiparticle Random-Phase Approximation based on a Skyrme energy-density functional.
Spagnoletti P, Simpson G, Carroll R, Regis J, Blanc A, Jentschel M, Koster U, Mutti P, Soldner T, de France G, Ur C, Urban W, Bruce A, Drouet F, Fraile L, Gaffney L, GhitØa D, Ilieva S, Jolie J, Korten W, Kroll T, Larijarni C, Lalkovski S, Lica R, Mach H, Marginean N, Paziy V, Podolyak Z, Regan PH, Scheck M, Saed-Samii N, Thiamova G, Townsley C, Vancraeyenest A, Vedia V, Gargano A, Van Isacker P (2017) Half-life of the 15/2+ state of 135I: A test of E2 seniority relations, Physical Review C: Nuclear Physics 95 021302 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.
Calinescu S, Caceres L, Grevy S, Sorlin O, Dombradi Z, Stanoiu M, Astabatyan R, Borcea C, Borcea R, Bowry M, Catford WN, Clement E, Franchoo S, Garcia R, Gillibert R, Guerin I, Kuti I, Lukyanov S, Lepailleur A, Maslov V, Morfouace P, Mrazek J, Negoita F, Niikura M, Perrot L, Podolyak Z, Petrone C, Penionzhkevich Y, Roger T, Rotaru F, Sohler D, Stefan I, Thomas J, Vajta Z, Wilson E (2016) Coulomb excitation of Ca-44 and Ar-46, PHYSICAL REVIEW C 93 (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 ³ 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.
Vogt A, Birkenbach B, Reiter P, Siciliano M, Hadynska-Klek K, Valiente-Dobón J, Wheldon C, Teruya E, Yoshinaga N, Arnswald K, Bazzacco D, Blazhev A, Bowry M, Bracco A, Bruyneel B, Chakrawarthy R, Chapman R, Cline D, Corradi L, Crespi F, Podolyak Z (2017) Isomers and high-spin structures in the N=81 isotones 135Xe and 137Ba, Physical Review C: Nuclear Physics 95 024316 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.
Söderström P, Walker PM, Wu J, Liu H, Regan PH, Watanabe H, Doornenbal P, Korkulu Z, Lee P, Liu J, Lorusso G, Nishimura S, Phong V, Sumikama T, Xu F, Lalkovski S, Lotay GJ, Patel Z, Podolyak Z, Shand CM (2016) K-mixing in the doubly mid-shell nuclide 170Dy and the role of vibrational degeneracy, Physics Letters B 762 pp. 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 ² decay. We have measured the yrast band up to the spin-parity JÀ=6+ state, the K=2³ -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 KÀ=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) ¼s, 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 ³ -vibrational mixing from a near degeneracy of the isomer and the 6+ state of the ³ 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?.
Chen S, Doornenbal P, Obertelli A, Rodr1guez T, Authelet G, Baba H, Calvet D, Chateau F, Corsi A, Delbart A, Gheller J, Giganon A, Gillibert A, Lapoux V, Motobayashi T, Niikura M, Paul N, Rousse J, Sakurai H, Santamaria C, Steppenbeck D, Taniuchi R, Uesaka T, Ando T, Arici T, Blazhev A, Browne F, Bruce A, Caroll R, Chung L, Cortes M, Dewald M, Ding B, Flavigny F, Franchoo S, Gorska M, Gottardo A, Jungclaus A, Lee J, Lettmann M, Linh B, Liu J, Liu Z, Lizarazo C, Momiyama S, Moschner K, Nagamine S, Nakatsuka N, Nita C, Nobs C, Olivier L, Orlandi R, Patel Z, Podolyak Z, Rudigier M, Saito T, Shand CM, Soderstrom P, Stefan I, Vaquero V, Werner V, Wimmer K, Xu Z (2017) First Indication for Shape Transitions in Neutron-rich Selenium Isotopes, Physical Review C: Nuclear Physics American Physical Society
Neutron-rich 88,90,92,94Se isotopes were studied via in-beam ³-ray spectroscopy after production from nucleon removal at intermediate energies at the Radioactive Isotope Beam Factory. ³-³ 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.
Gurgi LA, Regan PH, Söderström P, Watanabe H, Walker PM, Podolyak Z, Nishimura S, Berry TA, Doornenbal P, Lorusso G, Isobe T, Baba H, Xu Z, Sakurai H, Sumikama T, Catford WN, Bruce A, Browne F, Lane G, Kondev F, Odahara A, Wu J, Liu H, Xu F, Korkulu Z, Lee P, Liu J, Phong V, Yagi A, Zhang G, Alharbi T, Carroll R, Chae K, Dombradi Z, Estrade A, Fukuda N, Griffin C, Ideguchi E, Inabe N, Kanaoka H, Kojouharov I, Kubo T, Kubono S, Kurz N, Kuti I, Lalkovski S, Lee E, Lee C, Lotay GJ, Moon C, Nishizuka I, Nita C, Patel Z, Roberts O, Schaffner H, Shand CM, Suzuki H, Takeda H, Terashima S, Vajta Z, Kanaya S, Valiente-Dobón J (2017) Isomer Spectroscopy of Neutron-rich 165,167Tb, Acta Physica Polonica B 48 (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.
Caballero-Folch1 R, Domingo-Pardo C, Agramunt J, Algora A, Ameil F, Arcones A, Ayyad Y, Benlliure J, Borzov I, Bowry M, Calvino F, Cano-Ott D, Cortes G, Davinson T, Dillmann I, Estrade A, Evdokimov A, Faestermann T, Farinon F, Galaviz D, Garc1a A, Geissel H, Gelletly W, Gernhauser R, Gomez-Hornillos M, Guerrero C, Heil M, Hinke C, Knobel R, Kojouharov I, Kurcewicz J, Kurz N, Litvinov Y, Maier L, Marganiec J, Marketin T, Marta M, Mart1nez T, Mart1nez-Pinedo G, Montes F, Mukha I, Napoli D, Nociforo C, Paradela C, Pietri S, Podolyak Z, Prochazka A, Rice S, Riego A, Rubio B, Schaffner H, Scheidenberger C, Smith K, Sokol E, Steiger K, Sun B, Ta1n J, Takechi M, Testov D, Weick H, Wilson E, Winfield J, Wood RT, Woods P, Yeremin A (2017) First measurement of several ²-delayed neutron emitting isotopes beyond N=126, Physical Review Letters. 117 (1) 012501 American Physical Society
The ²-delayed neutron emission probabilities of neutron rich Hg and Tl nuclei have been measured together with ²-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 ²-decay strength distribution. This provides important constraints to global theoretical models currently used in r-process nucleosynthesis.
John P, Valiente-Dob on J, Mengoni D, Modamio V, Lunardi S, Bazzacco D, Gadea A, Wheldon C, Rodr guez T, Alexander T, de Angelis G, Ashwood N, Barr M, Benzoni G, Birkenbach B, Bizzeti P, Bizzeti-Sona A, Bottoni S, Bowry M, Bracco A, Browne F, Bunce M, Camera F, Corradi L, Crespi F, Melon B, Farnea E, Fioretto E, Gottardo A, Grente L, Hess H, Kokalova T, Mijatovi c T, Montagnoli G, Montanari D, Napoli D, Podolyak Z, Pollarolo G, Recchia F, Reiter P, Roberts O, Sahin E, Salsac M, Scarlassara F, Sferrazza M, Soderstrom P, Stefanini A, Szilner S, Ur C, Vogt A, Walshe A (2017) In-beam gamma-ray spectroscopy of the neutron-rich platinum isotope 200Pt toward the N = 126 shell gap, Physical Review C: Nuclear Physics 95 064321 pp. 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.
Rice S, Algora A, Tain J, Valencia E, Agramunt J, Rubio B, Gelletly W, Regan PH, Zakari-Issoufou A, Fallot M, Porta A, Rissanen J, Eronen T, Äystö J, Batist L, Bowry M, Bui V, Caballero-Folch R, Cano-Ott D, Elomaa V, Estevez E, Farrelly G, Garcia A, Gomez-Hornillos B, Gorlychev V, Hakala J, Jordan M, Jokinen A, Kolhinen V, Kondev F, Martínez T, Mason P, Mendoza E, Moore I, Penttilä H, Podolyak Z, Reponen M, Sonnenschein V, Sonzogni A, Sarriguren P (2017) Total absorption spectroscopy study of the ² decay of 86Br and 91Rb, Physical Review C 96 (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
Jungclaus A, Grawe H, Nishimura S, Doornenbal P, Lorusso G, Simpson G, Söderström P, Sumikama T, Taprogge J, Xu Z, Baba H, Browne F, Fukuda N, Gernhäuser R, Gey G, Inabe N, Isobe T, Jung H, Kameda D, Kim G, Kim Y, Kojouharov I, Kubo T, Kurz N, Kwon Y, Liang Z, Sakurai H, Schaffner H, Shimizu Y, Steiger K, Suzuki H, Takeda H, Vajta Z, Watanabe H, Wu J, Yagi A, Yoshinaga K, Benzoni G, Bönig S, Chae K, Coraggio L, Daugas J, Drouet F, Gadea A, Gargano A, Ilieva S, Itaco N, Kondev F, Kröll T, Lane G, Montaner-Pizá A, Moschner K, Mücher D, Naqvi F, Niikura M, Nishibata H, Odahara A, Orlandi R, Patel Z, Podolyak Z, Wendt A (2017) Observation of a ³ -decaying millisecond isomeric state in 128 Cd 80, Physics Letters B 772 pp. 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.
Browne F, Bruce A, Sumikama T, Nishizuka I, Nishimura S, Doornenbal P, Lorusso G, Soderstrom P, Watanabe H, Daido R, Patel Z, Rice S, Sinclair L, Wu J, Xu Z, Yagi A, Baba H, Chiga N, Carroll R, Didierjean F, Fang Y, Fukuda N, Gey G, Ideguchi E, Inabe N, Isobe T, Kameda D, Kojouharov I, Kurz N, Kubo T, Lalkovski S, Li Z, Lozeva R, Nishibata N, Odahara A, Podolyak Z, Regan PH, Roberts O, Sakurai H, Schaffner H, Simpson G, Suzuki H, Takeda H, Tanaka M, Taprogge J, Werner V, Wieland O (2017) K-selection in the decay of the (½
5
2
[532] —
3
2
[411])4-
isomeric state in 102Zr,
Physical Review C 96 (2) 024309 American Physical Society
The (½
5
2
[532] —
3
2
[411]) 4? state in 102Zr, populated in the ²-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+
³ 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 ³ degree of freedom compared to 100Sr.
Patel Z, Walker P, Podolyak Z, Regan P, Berry T, Söderström P, Watanabe H, Ideguchi E, Simpson G, Nishimura S, Wu Q, Xu F, Browne F, Doornenbal P, Lorusso G, Rice S, Sinclair L, Sumikama T, Wu J, Xu Z, Aoi N, Baba H, Bello Garrote F, Benzoni G, Daido R, Dombrádi Z, Fang Y, Fukuda N, Gey G, Go S, Gottardo A, Inabe N, Isobe T, Kameda D, Kobayashi K, Kobayashi M, Komatsubara T, Kojouharov I, Kubo T, Kurz N, Kuti I, Li Z, Matsushita M, Michimasa S, Moon C, Nishibata H, Nishizuka I, Odahara A, Sahin E, Sakurai H, Schaffner H, Suzuki H, Takeda H, Tanaka M, Taprogge J, Vajta Z, Yagi A, Yokoyama R (2017) Isomer-delayed
-ray spectroscopy of A = 159 - 164 midshell nuclei and the variation of
K-forbidden E1 transition hindrance factors,
Physical Review C 96 (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.
Wood R, Walker P, Lane G, Carroll R, Cullen D, Dracoulis G, Hota S, Kibédi T, Palalani N, Podolyak Z, Reed M, Schiffl K, Wright A (2017) Three-quasiparticle isomer in 173Ta and the excitation energy dependence of K-forbidden transition rates, Physical Review C 95 054308 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, KÀ = 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 H 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.
Podolyak Z (2014) Studies of exotic nuclei with advanced radiation detectors, Radiation Physics and Chemistry 95 pp. 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.
Gurgi L, Regan P, Söderström P, Watanabe H, Walker P, Podolyak Z, Nishimura S, Berry T, Doornenbal P, Lorusso G, Isobe T, Baba H, Xu Z, Sakurai H, Sumikama T, Catford W, Bruce A, Browne F, Lane G, Kondev F, Odahara A, Wu J, Liu H, Xu F, Korkulu Z, Lee P, Liu J, Phong V, Yag A, Zhang G, Alharbi T, Carroll R, Chae K, Dombradi Z, Estrade A, Fukuda N, Griffin C, Ideguchi E, Inabe N, Kanaoka H, Kojouharov I, Kubo T, Kubono S, Kurz N, Kuti I, Lalkovski S, Lee E, Lee C, Lotay G, Moon C, Nishizuka I, Nita C, Patel Z, Roberts O, Schaffner H, Shand C, Suzuki H, Takeda H, Terashima S, Vajta Z, Yoshida S, Valiente-Dòbon J (2016) Isomer spectroscopy of neutron-rich 168Tb103, Radiation Physics and Chemistry 140 pp. 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 ²-decay.
Discrete ³-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)
Shand C, Podolyak Z, Górska M, Doornenbal P, Obertelli A, Nowacki F, Otsuka T, Sieja K, Tostevin J, Tsunoda Y, Authelet G, Baba H, Calvet D, Château A, Chen S, Corsi A, Delbart A, Gheller J, Giganon A, Gillibert A, Isobe T, Lapoux V, Matsushita M, Momiyama S, Motobayashi T, Niikura M, Otsu H, Paul N, Péron C, Peyaud A, Pollacco E, Roussé J, Sakurai H, Santamaria C, Sasano M, Shiga Y, Steppenbeck D, Takeuchi S, Taniuchi R, Uesaka T, Wang H, Yoneda K, Ando T, Arici T, Blazhev A, Browne F, Bruce A, Carroll R, Chung L, Cortés M, Dewald M, Ding B, Dombrádi Z, Flavigny F, Franchoo S, Giacoppo F, Gottardo A, HadyDska-Kl?k K, Jungclaus A, Korkulu Z, Koyama S, Kubota Y, Lee J, Lettmann M, Linh B, Liu J, Liu Z, Lizarazo C, Louchart C, Lozeva R, Matsui K, Miyazaki T, Moschner K, Nagamine M, Nakatsuka N, Nishimura S, Nita C, Nobs C, Olivier L, Ota S, Orlandi R, Patel Z, Regan P, Rudigier M, ^ahin E, Saito T, Söderström P, Stefan I, Sumikama T, Suzuki D, Vajta Z, Vaquero V, Werner V, Wimmer K, Wu J, Xu Z (2017) Shell evolution beyond Z = 28 and N = 50: Spectroscopy of 81,82,83,84 Zn, Physics Letters B 773 pp. 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 ³ -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.
Lalkovski S, Stefanova E, Kisyov S, Korichi A, Bazzacco D, Bergstrom M, Gorgen A, Herskind B, Hubel H, Jansen A, Khoo T, Kutsarova T, Lopez-Martens A, Minkova A, Podolyak Z, Schonwasser G, Yordanov O (2017) Structure of the neutron mid-shell nuclei 111,11347Ag64,66, Physical Review C 96 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.
Lalovic N, Rudolph D, Podolyak Z, Sarmiento L, Simpson E, Alexander T, Cortes Sua M, Gerl J, Golubev P, Ameil F, Arici T, Bauer C, Bazzacco D, Bentley M, Boutachkov P, Bowry M, Fahlander C, Gadea A, Gellanki J, Givechev A, Goel N, Gorska M, Gottardo A, Gregor E, Guastalla G, Habermann T, Hackstein M, Jungclaus A, Kojouharov I, Kumar R, Kurz N, Lettmann M, Lizarazo C, Louchart-Henning C, Merchan E, Michelagnoli C, Moeller T, Moschner K, Patel Z, Pietralla N, Pietri S, Ralet D, Reese M, Regan P, Reiter P, Schaffner H, Singh P, Stahl C, Stegmann R, Stézowski O, Taprogge J, Thoele P, Wendt A, Wieland O, Wilson E, Wood R, Wollersheim H, Birkenbach B, Bruyneel B, Burrows I, Clement E, Desesquelles P, Domingo-Pardo C, Eberth J, Gonzales Millan V, Hess H, Jolie J, Judson D, Menegazzo R, Mengoni D, Napoli D, Pullia A, Quintana Arnes B, Rainovski G, Salsac M, Sanchis E, Simpson J, Valiente Dobón J (2018) Study of Isomeric States in 198,200,202,206Pb and 206Hg Populated in Fragmentation Reactions, Journal of Physics G: Nuclear and Particle Physics 45 035105 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 ³ 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.
Tain J, Agramunt J, Ahn D, Algora A, Allmond J, Baba H, Bae S, Brewer N, Caballero Folch R, Calvino F, Coleman-Smith P, Cortes G, Davinson T, Dillmann I, Domingo-Pardo C, Estrade A, Fukuda N, Go S, Griffin C, Grzywacz R, Ha J, Hall O, Harkness-Brennan L, Isobe T, Kahl D, Karny M, Kiss G, Kogimtzis M, Korgul A, Kubono S, Labiche M, Lazarus I, Lee J, Liu J, Lorusso G, Matsui K, Miernik K, Montes F, Moon B, Morales A, Nepal N, Nishimura S, Page R, Podolyak Z, Pucknell V, Rasco B, Regan P, Riego A, Rubio B, Rykaczewski K, Saito Y, Sakurai H, Shimizu Y, Simpson J, Soderstrom P, Stracener D, Sumikama T, Surman R, Suzuki H, Takechi M, Takeda H, Tarifeno-Saldiva A, Thomas S, Tolosa-Delgado A, Phong V, Woods P (2018) The BRIKEN Project: Extensive Measurements of ²-delayed Neutron Emitters for the Astrophysical r Process, Acta Physica Polonica B 49 (3) pp. 417-428 Jagiellonian University
An ambitious program to measure decay properties, primarily ²-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.
Morales A.I., Benzoni G., Watanabe H., de Angelis G., Nishimura S., Coraggio L., Gargano A., Itaco N., Otsuka T., Tsunoda Y., Van Isacker P., Browne F., Daido R., Doornenbal P., Fang Y., Lorusso G., Patel Z., Rice S., Sinclair L., Söderström P.-A., Sumikama T., Valiente-Dobón J.J., Wu J., Xu Z.Y., Yagi A., Yokoyama R., Baba H., Avigo R., Bello Garrote F.L., Blasi N., Bracco A., Bruce A.M., Camera F., Ceruti S., Crespi F.C.L., Delattre M.-C., Dombradi Zs., Gottardo A., Isobe T., Kojouharov I., Kurz N., Kuti I., Lalkovski S, Matsui K., Melon B., Mengoni D., Miyazaki T., Modamio-Hoybjor V., Momiyama S., Napoli D.R., Niikura M., Orlandi R., Podolyak Zsolt, Regan Patrick, Sakurai H., Sahin E., Sohler D., Schaffner H., Taniuchi R., Taprogge J., Vajta Zs., Wieland O., Yalcinkaya M. (2018) Is seniority a partial dynamic symmetry in the first ½ g 9/2 shell?, Physics Letters B 781 pp. 706-712 Elsevier
The low-lying structures of the midshell ½g9/2 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 ² 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.
Jungclaus A, Caceres L, Gorska M, Pfutzner M, Pietri S, Werner-Malento E, Grawe H, Langanke K, Martinez-Pinedo G, Nowacki F, Poves A, Cuenca-Garcia J, Rudolph D, Podolyak Z, Regan P, Detistov P, Lalkovski S, Modamio V, Walker J, Bednarczyk P, Doornenbal P, Geissel H, Gerl J, Grebosz J, Kojouharov I, Kurz N, Prokopowicz W, Schaffner H, Wollersheim H, Andgren K, Benlliure J, Benzoni G, Bruce A, Casarejos E, Cederwall B, Crespi F, Hadinia B, Hellstrom M, Hoischen R, Ilie G, Jolie J, Khaplanov A, Kmiecik M, Kumar R, Maj A, Mandal S, Montes F, Myalski S, Simpson G, Steer S, Tashenov S, Wieland O (2007) Observation of Isomeric Decays in the R-Process Waiting-Point Nucleus Cd-130(82), Physical Review Letters 99 (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.

Stevenson P, Brine M, Podolyak Z, Regan P, Walker P, Stone J (2005) Shape Evolution in the Neutron-Rich Tungsten Region, Physical Review C 72 (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.

Jones G, Regan P, Walker P, Podolyak Z, Stevenson P, Carpenter M, Carroll J, Chakrawarthy R, Chowdhury P, Garnsworthy A, Janssens R, Khoo T, Kondev F, Lane G, Liu Z, Seweryniak D, Thompson N, Zhu S, Williams S (2007) Identification of a High-Spin Isomer in Mo-99, Physical Review C 76 (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).

Stevenson P, Brine M, Podolyak Z, Regan P, Walker P, Stone J (2005) Shape evolution in the neutron-rich tungsten region, Physical Review C 72 (047303)
Bucurescu D, Rusu C, Marginean N, Ur C, de Angelis G, Corradi L, Bazzacco D, Beghini S, Della Vedova F, Duchene G, Farnea E, Faul T, Fioretto E, Gadea A, Gelletly W, Guiot B, Ionescu-Bujor M, Lordachescu A, Landown S, Lenzi S, Lunardi S, Mason P, Mihai C, Marginean R, Menegazzo R, Montagnoli G, Napoli D, Podolyak Z, Regan P, Scarlassara F, Stefanini A, Suliman G, Szilner S, Trotta M, Valiente-Dobon J, Zhang Y (2007) Gamma-ray Spectroscopy of the Neutron-Rich Nuclei Rb-89, Y-92, and Y-93 with Multinucleon Transfer Reactions, Physical Review C 76 (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.

Sun Y, Zhang G, Watanabe H, Kondev F, Lane G, Regan P, Söderström P, Walker P, Kanaoka H, Korkulu Z, Lee P, Liu J, Nishimura S, Wu J, Yagi A, Ahn D, Alharbi T, Baba H, Browne F, Bruce A, Carroll R, Chae K, Dombradi Z, Doornenbal P, Estrade A, Fukuda N, Griffin C, Ideguchi E, Inabe N, Isobe T, Kanaya S, Kojouharov I, Kubo T, Kubono S, Kurz N, Kuti I, Lalkovski S, Lee C, Lee E, Lorusso G, Lotay G, Moon C, Nishizuka I, Nita C, Odahara A, Patel Z, Phong V, Podolyak Z, Roberts O, Sakurai H, Schaffner H, Shand C, Shimizu Y, Sumikama T, Suzuki H, Takeda H, Terashima S, Vajta Z, Valiente-Dóbon J, Xu Z (2018) ²-³ and isomeric decay spectroscopy of 168Dy, EPJ Web of Conferences 178 pp. 02023-1 - 02023-3 EDP Sciences
This contribution will report on the experimental work on the level structure of 168Dy. The experimental data have been taken as part of the EURICA decay spectroscopy campaign at RIBF, RIKEN in November 2014. In the experiment, a 238U primary beam is accelerated up to 345 MeV/u with an average intensity of 12 pnA. The nuclei of interest are produced by in-flight fission of 238U impinging on Be target with a thickness of 5 mm. The excited states of 168Dy have been populated through the decay from a newly identified isomeric state and via the ² decay from 168Tb. In this contribution, scientific motivations, experimental procedure and some preliminary results for this study are presented.
Jones G, Williams S, Walker P, Podolyak Z, Zhu S, Carpenter M, Carroll J, Chakrawarthy R, Chowdhury P, Cullen I, Dracoulis G, Garnsworthy A, Hackman G, Janssens R, Khoo T, Kondev F, Lane G, Liu Z, Seweryniak D, Thompson N (2008) High-Spin, Multiparticle Isomers in Sb-121,Sb-123, Physical Review C 77 (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.

Kaya L, Vogt A, Reiter P, Siciliano M, Birkenbach B, Blazhev A, Coraggio L, Teruya E, Yoshinaga N, Higashiyama K, Arnswald K, Bazzacco D, Bracco A, Bruyneel B, Corradi L, Crespi F, de Angelis G, Eberth J, Farnea E, Fioretto E, Fransen C, Fu B, Gadea A, Gargano A, Giaz A, Görgen A, Gottardo A, Hadynska-Klek Katarzyna, Hess H, Hetzenegger R, Hirsch R, Itaco N, John P, Jolie J, Jungclaus A, Korten W, Leoni S, Lewandowski L, Lunardi S, Menegazzo R, Mengoni D, Michelagnoli C, Mijatovi? T, Montagnoli G, Montanari D, Müller-Gatermann C, Napoli D, Podolyak Zsolt, Pollarolo G, Pullia A, Queiser M, Recchia F, Rosiak D, Saed-Samii N, ^ahin E, Scarlassara F, Schneiders D, Seidlitz M, Siebeck B, Smith J, Söderström P-A, Stefanini A, Steinbach T, Stezowski O, Szilner S, Szpak B, Ur C, Valiente-Dobón J, Wolf K, Zell K (2018) High-spin structure in the transitional nucleus 1 131Xe: Competitive neutron and proton alignment in the vicinity of the N = 82 shell closure, Physical Review C 98 (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 ³-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 ~É H 0.4 MeV along the negative-parity one-quasiparticle
½h11/2(± = ?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 À 0h11/2 orbital is found to be decisive
for the description of the observed backbending phenomenon.
Heine M., Courtin S., Fruet G., Jenkins D.G., Morris L., Montanari D., Rudigier M., Adsley P., Curien D., Della Negra S., Lesrel J., Beck C., Charles L., Dené P., Haas F., Hammache F., Heitz G., Krauth M., Meyer A., Podolyak Zs., Regan P.H., Richer M., de Séréville N., Stodel C. (2018) The STELLA apparatus for particle-Gamma coincidence fusion measurements with nanosecond timing, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 903 pp. 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 10¼A, 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.
Broda R., Iskra A. W., Janssens R. V. F., Brown B. A., Fornal B., WrzesiDski J., Cieplicka-OryDczak N., Carpenter M. P., Chiara C. J., Hoffman C. R., Kondev F. G., Lane G. J., Lauritsen T., Podolyak Zs., Seweryniak D., Walters W. B., Zhu S. (2018) Two-neutron and core-excited states in Pb210 : Tracing E3 collectivity and evidence for a new ² -decaying isomer in Tl210, Physical Review C 98 (2) 024324 American Physical Society
Yrast and near-yrast levels up to an I=17? 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 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 ½i11/2j15/2 state, in analogy to a similar E3 coupling to the ½j15/2 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 ²-decaying isomer in 210Tl. Shell-model calculations of the 210Tl levels suggest the possibility of a 11+ long-lived, ²-decaying state, and the delayed yields observed in various reactions fit rather well with a 210Tl assignment.