Abstract
High spin states in neutron-rich have been reinvestigated by measuring the triple- and fourfold coincidence data observed in the spontaneous fission of . The positive-parity band is expanded to spin (45/2) and the negative-parity side band is expanded to spin (39/2) with a new third band connected to it. An octupole band structure with was proposed. The systematic characteristics of the octupole correlations have been discussed. Reflection asymmetric shell model calculations for the octupole band structure of are in good agreement with the experimental data.
- Received 2 July 2014
- Revised 26 August 2014
DOI:https://doi.org/10.1103/PhysRevC.90.047303
©2014 American Physical Society