Speaker
Description
Medium mass nuclei around the N = Z line offer new insights into the coexistence phenomena and the fundamental symmetries. The nuclei dominated by shape coexistence and mixing are of particular interest due to the open questions concerning the nature of the observed isomers, the irregularities in the excitation spectra, and their feeding by the β decay of the neighboring nuclei. On the neutron-rich side in the A∼100 region nuclei manifest exotic phenomena produced by shape coexistence including allowed and forbidden β-decay of low- and intermediate-spin isomers. The impact of shape coexistence on the dynamics of proton-rich and neutron-rich medium mass nuclei is investigated within the beyond-mean-field complex Excited Vampir variational model using an effective interaction derived from a nuclear matter G matrix based on the charge-dependent Bonn CD potential in large model spaces. Results on the comprehensive treatment of different identified characteristics will be discussed and compared with the available experimental data.
