Levels of 105Pd populated in the decay of 105Agm,g and comparison with interacting boson-fermion model calculations.

Abstract

Deexcitation properties of low-spin levels in $^{105}\mathrm{Pd}$ populated in the decay of $^{105}\mathrm{Ag}^{\mathit{m}}$ and $^{105}\mathrm{Ag}^{\mathit{g}}$ are investigated. The calculation for $^{105}\mathrm{Pd}$ is performed in the interacting boson-fermion model (IBFM), using a nearly spherical boson core corresponding to $^{104}\mathrm{Pd}$. As a result, we obtain an approximate quasiweak-coupling pattern, which is in contrast to previously assumed symmetric rotor model calculations. Rather good agreement between theory and experiment was obtained. The extension of the IBFM calculations to lighter N=59 isotones is consistent with the recent discovery of coexisting structures and dual double-subshell closure in respective even-even core nuclei. \textcopyright{} 1996 The American Physical Society.