Shape coexistence and isomeric states in Pd94 within a beyond-mean-field approach

Abstract

The evolution of shape coexistence and mixing in the structure of $^{94}\mathrm{Pd}$ positive parity states and the nature of the isomeric states at spin ${8}^{+}$ and ${14}^{+}$ are self-consistently studied within the beyond-mean-field complex excited Vampir model using an effective interaction derived from a nuclear matter $G$ matrix based on the charge-dependent Bonn CD potential in a large model space. Within the same theoretical framework we investigated the Gamow-Teller $\ensuremath{\beta}$ decay of the ${7}^{+}$ isomer and the superallowed Fermi $\ensuremath{\beta}$ decay of the ${0}^{+}$ ground state of $^{94}\mathrm{Ag}$ to $^{94}\mathrm{Pd}$. Results on the structure and electromagnetic properties of positive parity states up to spin ${14}^{+}$ in $^{94}\mathrm{Pd}$ as well as the strength distributions for the $^{94}\mathrm{Ag}\phantom{\rule{4pt}{0ex}}\ensuremath{\beta}$ decay feeding the investigated states in $^{94}\mathrm{Pd}$ are discussed and compared with the available experimental data.