Abstract
We have identified several high- four- and six-quasiparticle states between 2.5 and 5 MeV excitation in , which are well described by the collective model with axial symmetry. Isomers with form traps at or near the yrast line. The yrast structure changes from the ground band to a band at and again to a state at , providing the first demonstration that intrinsic excitations of a heavy deformed nucleus can become yrast.
- Received 14 June 1976
DOI:https://doi.org/10.1103/PhysRevLett.37.823
©1976 American Physical Society