Neutron and proton transition matrix elements and inelastic hadron scattering

Abstract The ratios of the neutron and proton transition matrix elements ( M n / M p ) have been studied for 0 + → 2 + transitions in single-closed-shell (SCS) nuclei by comparing inelastic hadron scattering and electromagnetic transition rates. The results show a general consistency from hadron scattering to an accuracy ≈15% and show the systematic trend that M n / M p > N / Z (the collective-model result) for SCS neutron-valence nuclei and N / Z for SCS proton-valence nuclei, in agreement with schematic-model calculations of core-polarization effects.