Coincidence studies of the giant multipole resonances in 116Sn using the (e, e′ n) reaction

Abstract We present 116 Sn (e, e′ n) measurements in the giant resonance region with kinematics that favor electric monopole, dipole, and quadrupole excitation. The excitation energy of the monopole resonance, while consistent with trends observed in heavy nuclei, is higher than results from hadron scattering experiments on Sn. The quadrupole strenght disagrees with an open-shell RPA calculation.