Shell-model description of monopole shift in neutron-rich Cu

Abstract

Variations in the nuclear mean-field, in neutron-rich nuclei, are investigated within the framework of the nuclear shell model. The change is identified to originate mainly from the monopole part of the effective two-body proton-neutron interaction. Applications for the low-lying states in odd-$A$ Cu nuclei are presented. We compare the results using both schematic and realistic forces. We also compare the monopole shifts with the results obtained from large-scale shell-model calculations, using the same realistic interaction, in order to study two-body correlations beyond the proton mean-field variations.

Phys. Rev. C (in press)

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• Experimental evidence for 56Ni-core breaking from the low-spin structure of the N=Z nucleus 58Cu
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