Large-basis shell model studies of light nuclei with a multivalued<i>G</i>-matrix effective interaction

Abstract

Large-basis shell model studies of low-lying excitations in light nuclei from $^{4}\mathrm{He}$ to $^{7}\mathrm{Li}$ have been performed with a multivalued G-matrix effective interaction, as recently suggested by Haxton et al. Calculations were performed relative to the vacuum (``no core'') using very large, separable model spaces containing all excitations with unperturbed energies up to 8\ensuremath{\Elzxh}\ensuremath{\Omega}. Using G matrices derived from a new Nijmegen potential, we achieve a very satisfactory description of these excitations.