Cross-shell excitation in two-proton knockout: Structure of ${}^{52}$Ca

A. Gade, R. V. F. Janssens, D. Bazin +17

The two-proton knockout reaction ${}^9$Be(${}^{54}$Ti,${}^{52}$Ca$+\gamma$) has been studied at 72 MeV/nucleon. Besides the strong feeding of the ${}^{52}$Ca ground state, the only other size…