STRUCTURE OF EVEN GE ISOTOPES BY MEANS OF INTERACTING BOSON MODEL WITH A FERMION PAIR MODEL

Abstract

The energy levels of the even-even Ge isotopes with mass number between 64 and 78 are studied in the model of the traditional interacting boson approximation. To account for the multiple band structure of these isotopes, one boson is allowed to break and form a fermion pair. The two fermions are allowed to excite to f5/2 and g9/2 Single-particle orbitals. It was found that the energy levels of the Ge-64-78 isotopes can be reproduced reasonably.