Abstract
High spin states in were identified in the reaction , at 200 and 205 MeV beam energies. The -ray energies, intensities, multipolarities, and lifetimes of high spin states were measured with the GASP spectrometer array in combination with a plunger apparatus by means of the recoil distance Doppler shift method. The deduced level scheme and transition probabilities are compared to the results of large-scale shell model calculations using three independent two-body interactions. The agreement of the level energies is satisfactory, except for a cascade of dipole transitions at high spins. The general good agreement found for transition strengths implies a large effective neutron polarization charge. The shell-model calculations do not account for the measured enhanced transitions for which a core excited octupole phonon admixture is indicated.
- Received 18 March 1998
DOI:https://doi.org/10.1103/PhysRevC.58.108
©1998 American Physical Society