Abstract
Several rotational bands have been populated in via the F, 4nγ) fusion-evaporation reaction. Bands built on low-lying , , and proton states have been identified. At higher spins, both proton and neutron [ alignments have been observed. While the proton alignment from low-Ω orbitals maintains a prolate nuclear shape, the alignment of high-Ω neutrons drives the nucleus to a collectively rotating oblate shape (γ∼-60°). The results are interpreted in the framework of the cranked shell model. In addition, B(M1;I→I-1)/B(E2;I→I-2) ratios have been extracted for several of the bands and the results compared to a semiclassical model to identify the detailed structure.
- Received 12 October 1988
DOI:https://doi.org/10.1103/PhysRevC.39.471
©1989 American Physical Society