Abstract
Rotational states have been populated in γ-soft following the C,3nγ) reaction. The ground state of this nucleus is predicted to possess maximal triaxiality γ∼-30°. Two ΔI=2 bands were established, based on quasineutron configurations with large negative γ deformations close to the collective oblate shape γ=-60°. The bandhead of one of these bands, associated with a [ν configuration, was found to be isomeric with a mean lifetime τ=12.5±0.3 ns. A third ΔI=2 band was observed, built on a two-quasiproton configuration with a near-prolate shape (γ∼0°). In addition, two ΔI=1 bands, built on mixed proton-neutron four-quasiparticle configurations with oblate shapes (γ∼-60°), were established.
- Received 15 May 1989
DOI:https://doi.org/10.1103/PhysRevC.40.1255
©1989 American Physical Society