Structure of particle-hole nuclei aroundS100n

Abstract

We have performed shell-model calculations for the three odd-odd nuclei $^{100}\mathrm{I}\mathrm{n}$, $^{102}\mathrm{I}\mathrm{n}$, and $^{98}\mathrm{A}\mathrm{g}$, with neutron particles and proton holes around $^{100}\mathrm{S}\mathrm{n}$. We have used a realistic effective interaction derived from the CD-Bonn nucleon-nucleon potential, the neutron-proton channel being explicitly treated in the particle-hole formalism. Particular attention has been focused on the particle-hole multiplets, which are a direct source of information on the neutron-proton effective interaction. We present our predictions for the two lowest lying multiplets in $^{100}\mathrm{I}\mathrm{n}$, for which no spectroscopic data are yet available. For $^{98}\mathrm{A}\mathrm{g}$ and $^{102}\mathrm{I}\mathrm{n}$ comparison shows that our results are in very good agreement with the available experimental data.