Microscopic cluster model-Applications in reactions of astrophysical interest and in light nucleus physics

When?

Tuesday 24 May 2011, 14:00

Where?

30 BB 03 Physics Seminar Room

Open to:

Staff, Students

Speaker:

Marianne Dufour, IN2P3-CNRS/Universite de Strasbourg

During this talk, general aspects of microscopic cluster models based on the combination of the Generator-Coordinate-Method and of the R-matrix method will be presented [1, 2]. Such frameworks present numerous advantages. They provides an unified description of bound and scattering states. Antisymmetrization between all nucleons, good quantum numbers and boundary conditions are exactly treated.

Microscopic cluster models are widely used in nuclear astrophysics where measurements in laboratories are in general impossible at stellar energy. They are also widely applied to describe broad states in light nuclei such as molecular ones where an exact treatment of the asymptotic behaviour of the wave-functions is necessary. Our purposes will be illustrated by recent examples such as the 12C(alpha,gamma )16O E2 cross section[3], the existence of a molecular band in the 12Be nucleus, the physics of exotic light nuclei such as the 16B nucleus [4] and the recent research of condensate states in 12C and 16O [5].

1. P. Descouvemont, and D. Baye, Rep. Prog. Phys. 73, 036301 (2010).

2. P. Descouvemont, and M. Dufour, Microscopic cluster model,

to be published in Lecture Note in Physics, Springer (2011), Ed. C. Beck.

3. M. Dufour, and P. Descouvemont, Phys. Rev. C78, 015808 (2008).

4. M. Dufour, and P. Descouvemont, Phys. Lett. B 237 (2011).

5. R. Lazauskas, and M. Dufour, in preparation