Abstract
Excited states in the neutron-deficient nuclei and were populated in the and , fusion-evaporation reactions at bombarding energies of 270 and 380 MeV, respectively. γ rays were detected at the target position using the JUROGAM spectrometer while recoiling ions were separated in-flight by the RITU gas-filled recoil separator and implanted in the GREAT spectrometer. The energy level schemes for and were identified using recoil-decay correlation techniques. At low spin, the yrast bands of these isotopes consist of signature partner bands based on a single quasiproton configuration. The bands display large energy splitting consistent with the soft triaxial shape typical of transitional nuclei above . The configurations of the excited states are proposed within the framework of the cranked shell model.
3 More- Received 22 December 2014
DOI:https://doi.org/10.1103/PhysRevC.91.034319
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