Rotational states have been populated in -soft Ba132 following the Sn122(13C,3n) reaction. The ground state of this nucleus is predicted to possess maximal triaxiality -30°. Two I=2 bands were established, based on quasineutron configurations with large negative deformations close to the collective oblate shape =-60°. The bandhead of one of these bands, associated with a [h11/2]2 configuration, was found to be isomeric with a mean lifetime =12.50.3 ns. A third I=2 band was observed, built on a two-quasiproton configuration with a near-prolate shape (0°). In addition, two I=1 bands, built on mixed proton-neutron four-quasiparticle configurations with oblate shapes (-60°), were established.
ASJC Scopus subject areas
- Nuclear and High Energy Physics