Some Odd Z Nuclei in the 63 ≤ A ≤ 89 Mass Region in the Framework of the Intermediate Coupling Model

Abstract

The level structures of the nuclei 63Cu, 69Ga, 75As, 79Br, 83Rb, and 89Y are investigated in the framework of the unified model.Each nucleus is considered to consist of an even–even vibrating core and extra-core proton quasiparticle. The quasiparticle–core interaction Hamiltonian is assumed to be given by a dipole plus a quadrupole term. The coupling of a g9/2 state to the vibrating core leads to the formation of states of positive parity with [Formula: see text]. Such states with I up to 11/2+ have been recently observed in the nuclei under investigation. In the case of negative parity states the extra core proton quasiparticle is assumed to have available the p3/2, p1/2, and ƒ5/2 states. Many features of the investigated nuclei are explained by the model at least qualitatively. The present calculations do not exhaust the possibility of improved results. Future experimental data will be highly desirable not only for testing but also for improving the model.