Evidence for Collective Oblate Rotation in N = Z {sup 68}Se
Journal Article
·
· Physical Review Letters
A {gamma} -ray spectroscopic measurement of the N=Z nucleus {sup 68}Se has been made following the {sup 12}C( {sup 58}Ni, 2 n) reaction at 185 and 220 MeV using Gammasphere and the Argonne Fragment Mass Analyzer. Despite a very low production cross section of 200(50) {mu}b , two distinct rotational bands were found; the ground state band consistent with oblate collective rotation, and an excited band consistent with prolate rotation. These observations support long-standing predictions that nuclear ground states with substantial oblate ({beta}{sub 2}{approx}-0.3) deformation should exist in this region. (c) 2000 The American Physical Society.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL
- OSTI ID:
- 20216331
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 18 Vol. 84; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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