Transition strengths in the neutron-rich Ni isotopes

Gottardo, A.*; De Angelis, G.*; Doornenbal, P.*; Coraggio, L.*; Gargano, A.*; Itaco, N.*; Orlandi, R.  ; 52 of others*

Reduced transition probabilities have been measured for the neutron-rich Ni nuclei with relativistic Coulomb excitation performed at the RIKEN Nishina Center. Excitation energies compare well with the result of large-scale shell-model calculations, while values are larger than predicted. This could indicate an increasing contribution of proton excitations across the shell closure when approaching Ni.