Abstract
The mean lifetimes of seven states in excited via the reaction at a beam energy of 210 MeV were measured for the first time by means of the recoil-distance Doppler-shift technique. The lifetimes were determined in coincidence mode within the framework of the differential decay-curve method. The quadrupole deformation derived from the values at the bottom of the negative-parity yrast band confirms the predictions of previous TRS calculations. At higher excitation energy along the yrast line, the experimental transition strengths indicate an apparent loss of collectivity with increasing spin. A three-band mixing calculation provides an overall description of these strengths.
- Received 13 December 2002
DOI:https://doi.org/10.1103/PhysRevC.67.054306
©2003 American Physical Society