Abstract
The -ray decay schemes of and have been considerably extended using the and reactions at 100 MeV and and reactions at 145 MeV, with the aim of studying oblate bands arising from the strong coupling of a valence particle (or hole) to the oblate deformed ground state band of A new isomeric bandhead was identified in A transitional quadrupole moment of was deduced for the band built on the isomer in corresponding to a rigid oblate deformation of consistent with theoretical predictions. However, it appears that the relevant oblate configurations in and are not nearly so favored as they are in and are rapidly crossed by prolate configurations that form the high spin yrast lines.
- Received 22 May 2001
DOI:https://doi.org/10.1103/PhysRevC.64.064311
©2001 American Physical Society