Abstract
High-spin states in have been studied experimentally by using the (,5n) fusion-evaporation reaction at beam energies of 167 and 175 MeV. A rotational band built on the configuration with oblate deformation has been established for . Spin values are assigned by adopting the results from decay work for found in the literature. With the configuration and spin-parity assignments, the low-spin signature inversion has been revealed for the oblate band in . It is the first experimental observation of low-spin signature inversion for a band associated with the oblate configuration. The low-spin signature inversion for the oblate band can be interpreted by the two-quasiparticle-plus-rotor model including a J-dependent residual interaction.
- Received 24 November 2004
DOI:https://doi.org/10.1103/PhysRevC.72.044302
©2005 American Physical Society