Fujita Y, Hamamoto I, Fujita H, Shimbara Y, Adachi T, Berg GPA, Fujita K, Hatanaka K, Kamiya J, Nakanishi K, Sakemi Y, Shimizu Y, Uchida M, Wakasa T, Yosoi M. Evidence for the existence of the [2 0 2]3/2 deformed band in mirror nuclei 25Mg and 25Al.
PHYSICAL REVIEW LETTERS 2004;
92:062502. [PMID:
14995233 DOI:
10.1103/physrevlett.92.062502]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2003] [Indexed: 05/24/2023]
Abstract
After 50 years of its prediction, the highest-lying [2 0 2]3/2 orbit among the six Nilsson single-particle orbits originating from the sd shells in prolately deformed nuclei and the rotational band on this orbit were identified. The band members were observed in 25Al at excitation energies of 6-7.5 MeV in a high-resolution 25Mg(3He,t) charge-exchange reaction at 0 degrees having a strong selectivity for Gamow-Teller transitions. In the comparison with the analogous M1 transitions in 25Mg, the J(pi)=3/2(+) bandhead state and the excited 5/2(+) and 7/2(+) members were clearly assigned.
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