期刊
PHYSICAL REVIEW C
卷 79, 期 4, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.79.044311
关键词
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资金
- Spanish Ministerio de Ciencia e Innovacion [FPA2008-04688]
- Junta de Andalucia [FQM0220]
We have studied the low-lying magnetic spectra of C-12, O-16, Ca-40, Ca-48, and Pb-208 nuclei within the random phase approximation (RPA) theory, finding that the description of low-lying magnetic states of doubly-closed-shell nuclei imposes severe constraints on the spin and tensor terms of the nucleon-nucleon effective interaction. We first used four phenomenological effective interactions, and we obtained good agreement with the experimental magnetic spectra and, to a lesser extent, with the electron scattering responses. Then we made self-consistent RPA calculations to test the validity of the finite-range Gogny D1 interaction. For all the nuclei under study, we found that this interaction inverts the energies of all the magnetic states forming isospin doublets.
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