Direct decay of the giant dipole resonance in58,60Ni and64Zn from (e, � c) experiments

(e,e'c) coincidence experiments at a momentum transfer of q=0.27 fm−1 to study the decay of the giant dipole resonance in58,60Ni and64Zn show deviations from photonuclear results and reveal strong contributions of direct decay to proton hole states.