A self-consistent description of the spectroscopic properties of odd-odd nuclei

Abstract

A description of nuclear states in odd-odd nuclei is made within the rotor-plus-two-quasiparticle approach. The single particle wave functions and energies, the static equilibrium core properties as well as the residual neutron-proton interaction are determined from the same nucleon-nucleon effective interaction. The inherent approximations are discussed and the calculational details are briefly reviewed. The validity of the approach is assessed for three odd-odd nuclei ( 160Tb, 174Lu and 238Np). The microscopic structure of the observed bands is thoroughly studied. The relevance of both the quasiparticle wavefunctions and the neutron-proton interaction is discussed in the context of observed Gallagher-Moszkowski and Newby energies.