Collective Oblate Rotation at High Spins in Neutron-Rich {sup 180}Hf
Journal Article
·
· Physical Review Letters
- Department of Physics, University of Massachusetts Lowell, Lowell, Massachusetts 01854 (United States)
- Nuclear Structure Research Laboratory, University of Rochester, Rochester, New York 14627 (United States)
- Physics Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
We report on experimental evidence for collective oblate rotation becoming favored at high spins in a rigid, well-deformed, axially symmetric nucleus. Excited states established up to spin 20({Dirac_h}/2{pi}) in {sup 180}Hf are consistent with predictions that nucleon alignments would favor oblate over prolate shapes at high spins in neutron-rich Hf isotopes. The results highlight the influence of valence orbitals on the interplay between nucleon alignments and nuclear shapes and provide a rare example of independent particle dynamics in competing potential wells.
- OSTI ID:
- 21179868
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 18 Vol. 101; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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