Abstract
Level structures of neutron-rich nucleus have been reinvestigated by using a triple coincidence study from the spontaneous fission of . Several new levels and transitions are identified. The previously observed octupole band structure is confirmed and expanded. Another set of the positive and negative parity bands connected by strong transitions is proposed as the octupole band structure. Thus, the doublet octupole bands are completed in . The experimental branching ratios indicate that the octupole correlations in are weak. The other characteristics of the octupole bands have been discussed.
- Received 25 December 2015
DOI:https://doi.org/10.1103/PhysRevC.93.064321
©2016 American Physical Society