The reactions 63,65Cu(t, p) 65,67Cu

Abstract

Angular distributions of the Cu(t, p) reactions leading to states of 65Cu and 67Cu have been measured at an incident energy of 12 MeV, using the Aldermaston multi-angle magnetic spectrograph. For 65Cu, 27 excited states were observed up to an excitation energy of 3.8 MeV; and for 67Cu, 17 excited states were observed up to 4.3 MeV. The shapes of the angular distributions of the stronger proton groups are similar to known L = 0, L = 2 and L = 3 (t, p) distributions in other medium-weight nuclei. The data for 65Cu are compared with the 64Ni( 3He, d) results of Blair and it is concluded that below 2.2 MeV the same levels are excited in the two experiments. The empirical L assignments for 65Cu are in the majority of the cases consistent with the spin and parity assignments of Blair. The (t, p) data for 67Cu show many similarities with the 65Cu data and this fact is used for tentative assignments of some levels in 67Cu.