Influence of particle number projection and residual interaction on the yrast bands in rare earth nuclei

Abstract

A microscopic study of the yrast bands of various doubly even nuclei in the rare earth region is presented. The calculations are based on a variational principle using angular momentum and particle number projected deformed BCS states as trial wave functions and the pairing plus quadrupole force as residual interaction. The influence of particle number projection and force parameters on the spectra and wave functions are studied as well as the interplay between Coriolis antipairing and deformation effects. Successes and shortcomings of the model are discussed.