Broken Pairs and High-Spin States in Transitional Nuclei

Abstract

The Interacting Boson plus broken-pairs Model has been used to describe high-spin bands in spherical and transitional nuclei. In the spherical nucleus ${}^{104}$Cd the model reproduces the structure of high-spin bands built on a vibrational structure. Model calculations performed with a single set of parameters reproduce ten bands in ${}^{136}$Nd, including the two dipole high-spin bands based on the $(\pi h_{11/2}{)}^2$ $(\nu h_{11/2}{)}^2$ configuration.

Comments: 7 Pages LaTeX, 4 ps figures, Invited talk at the International Conference on Nuclear Physics and Related Areas, Thessaloniki 1997, to appear in the conference proceedings