LEVELS OF PD-105 POPULATED IN THE DECAY OF AG-105(M,G) AND COMPARISONWITH INTERACTING BOSON-FERMION MODEL-CALCULATIONS

Deexcitation properties of low-spin levels in Pd-105 populated in the decay of Ag-105(m) and Ag-105(g) are investigated. The calculation for Pd-105 is performed in the interacting boson-fermion model (IBFM), us ing a nearly spherical boson core corresponding to Pd-104. As a result , we obtain an approximate quasiweak-coupling pattern, which is in con trast to previously assumed symmetric rotor model calculations. Rather good agreement between theory and experiment was obtained. The extens ion of the IBFM calculations to lighter N=59 isotones is consistent wi th the recent discovery of coexisting structures and dual double-subsh ell closure in respective even-even core nuclei.