Nucleon interaction with58Niup to 150 MeV studied in the coupled-channels approach based on the soft-rotator nuclear structure model

Abstract

The soft-rotator model was applied to understand the collective nuclear structure, electromagnetic transition, and the nucleon (both neutron and proton) interaction data of ${}^{58}\mathrm{Ni}$ in a consistent manner. It was found that the model could describe the collective level structure of ${}^{58}\mathrm{Ni},$ which does not exhibit the typical rotational or harmonic vibrational structure, up to excitation energy of 4.5 MeV modestly. The nucleon interaction data were described up to 150 MeV reasonably well by the coupled-channels method with a coupling scheme constructed consistent to the nuclear structure of ${}^{58}\mathrm{Ni}.$