Dr. Faiçal Azaiez (Institute de Physique Nucleaire, Orsay, France), The evolution of shell structure in nuclei: Some recent results from GANIL

Wednesday 31 Oct 2007, 10:00 → 11:00 Europe/Bucharest

The structure of atomic nuclei is known to be largely dominated by single particle shell effects. For instance, basic nuclea properties such as binding energies and shapes depend strongly on the underlying shell structure. The study of nuclei beyond the valley of stability has shown that some of the well-established spherical shell effects are not universal and are subject to changes and evolutions largely depending on configurations of the proton and neutron at the Fermi surface. I will present an ensemble of experimental results from such studies of nuclei close to both the neutron and the proton drip lines, using in-beam gamma spectroscopy techniques combined with reactions induced with secondary beams at intermediate energies at GANIL. The information obtained from these studies on the N=20, N=28, N=40 and Z=20 shell effect evolutions will be presented and the physics underlying the observed effects will be discussed.