The Coulomb energies of the lower excited levels in the light mirror nuclei

Abstract

The Coulomb energy differences of the lower excited levels in the mirror nuclei with 5 ≦ A ≦ 17 are calculated using first order perturbation theory and shell model representations for the nuclear states. The Slater integrals for the Coulomb potential are used as parameters in the calculation and the nuclear radius is assumed to vary as A 1 3 . Good agreement is found with the experimental values when account is taken of other effects, such as the Thomas-Ehrman shift, which will contribute to the differences in the energy level spectra of a mirror pair.