Fine structure of proton-neutron mixed symmetry states in some N=80 isotones
Journal Article
·
· Physical Review. C, Nuclear Physics
- Dipartimento di Scienze Fisiche, Universita di Napoli 'Federico II' and Istituto Nazionale di Fisica Nucleare, Monte S Angelo, Via Cintia I-80126 Napoli (Italy)
- Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, 1784 Sofia (Bulgaria)
A microscopic multiphonon approach is adopted to investigate the structure of some low-lying states observed experimentally in the N=80 isotones {sup 134}Xe, {sup 136}Ba, and {sup 138}Ce. The calculation yields levels and electromagnetic transition strengths in good agreement with experiments and relates the observed selection rules to the neutron-proton symmetry and phonon content of the observed states. Moreover, it ascribes the splitting of the M1 strength in {sup 138}Ce to the proton subshell closure which magnifies the role of pairing in the excitation mechanism.
- OSTI ID:
- 21189907
- Journal Information:
- Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 4 Vol. 77; ISSN 0556-2813; ISSN PRVCAN
- Country of Publication:
- United States
- Language:
- English
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