Abstract
High angular momentum states in odd-odd were populated through the reaction at 135 MeV. Recoiling nuclei were stopped in a thick Ta backing. Prompt multi- coincidences with evaporated charged particles were detected using the full array of Gammasphere and the Microball. Mean lifetimes of 51 levels in were measured using the Doppler-shift attenuation method. Strongly alternating magnetic dipole transition strengths were observed in the yrast positive-parity bands. Most of the transition quadrupole moments inferred from the lifetimes lie in the range of 1 to which would correspond to quadrupole deformations of 0.10 to 0.27 in a rotational model. Comparison with Hartree-Fock-Bogoliubov cranking calculations suggests triaxial to oblate shapes.
- Received 20 January 2000
DOI:https://doi.org/10.1103/PhysRevC.62.024316
©2000 American Physical Society