期刊
INTERNATIONAL JOURNAL OF MODERN PHYSICS E-NUCLEAR PHYSICS
卷 18, 期 1, 页码 109-122出版社
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0218301309012094
关键词
Signature splitting; particle rotor model; triaxiality
资金
- Major State Basic Research Developing Program [2007CB815000]
- National Natural Science Foundation of China [10505002, 10435010, 10605001, 10775004, 10221003]
A particle rotor model with a quasi-neutron coupled with a triaxially deformed rotor is applied to study signature splitting for bands with intruder orbital nu 7/2(+)[633] and nonintruder orbital nu 5/2(-)[512] in W-173. Excellent agreement with the observed energy spectra has been achieved for both bands. Signature splitting for band nu 7/2(+)[633], and band nu 5/2(-)[512] before the onset of signature inversion, is satisfactorily reproduced by introducing the gamma degree of freedom. The phase and amplitude of signature splitting in band nu 5/2(-)[512] are attributed to strong competition between 2f(7/2) and 1h(9/2) components. However, the self-consistent explanation of signature inversion in band nu 5/2(-)[512] is beyond the present one quasi-neutron coupled with a triaxially deformed rotor.
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