Speaker
Description
Neutron-rich A∼100 nuclei relevant for the astrophysical r-process and nuclear reactor
related issues manifest sudden variations of particular nuclear properties in some isotopic
chains, a more smooth transition in some others, and exotic shape isomers induced by triple shape
coexistence in some nuclei. Our recent investigations represent an attempt to a comprehensive
understanding of shape coexistence phenomena suggested by the experimental data at low spins
and the richness of various structural effects at intermediate spins within the beyond-mean-field
complex Excited Vampir variational model with symmetry projection before variation using a
realistic effective interaction obtained from a nuclear matter G-matrix based on the charge-
dependent Bonn CD potential and a large model space.
Results will be presented concerning effects of shape coexistence and mixing on structure and
electromagnetic properties as well as b--decay properties around the neutron number N=58.
