$\beta$-decay rates of ${}^{(115,117)}$Rh into ${}^{(115,117)}$Pd isotopes in the microscopic IBFM-2

Abstract

The structure of odd-$A$ ${}^{(115,117)}$Rh and ${}^{(115,117)}$Pd isotopes is studied by means of the neutron-proton Interacting Boson-Fermion Model (IBFM-2). $J^P={\frac{1}{2}}^{+}$ quantum number assignment for the ${}^{(115,117)}$Pd ground-states is critically discussed and the predicted energy levels are compared to the existing experimental data. The resulting nuclear wave functions are used to compute the $\beta$-decay $ft$ values of the transitions from ${}^{(115,117)}$Rh to ${}^{(115,117)}$Pd in the microscopic IBFM-2 and the results compared with the data.