Abstract
High spin states in neutron-rich odd-Z nuclei have been investigated from the study of prompt γ rays in the spontaneous fission of by using γ-γ- and γ-γ-γ- coincidence techniques. Alternating parity bands are identified for the first time in and extended in A new side band, with equal, constant dynamic, and kinetic moments of inertia equal to the rigid body value, as found in superdeformed bands, is discovered in Enhanced transitions between the negative- and positive-parity bands in these nuclei give evidence for strong octupole deformation in and in These collective bands show competition and coexistence between symmetric and asymmetric shapes in Evidence is found for crossing and transitions between the and doublets in
- Received 22 June 1999
DOI:https://doi.org/10.1103/PhysRevC.60.051304
©1999 American Physical Society