Studies of nuclear collisions involving 8 MeV deuterons by the photographic method II. The energy of the excited states of 17O

The apparatus described in part I has been employed to determine the energy of the excited states of the nucleus 17O by observations on the protons from the reaction 16O (d, p ) 17O, and on the α-particles from the reaction 19F(d, α) 17O . The protons from the first reaction were observed a t five angles of emission with respect to the primary beam, and the α-particles from the second at four angles. Thirteen excited states of 17O were observed, evidence for ten of which was given by both reactions. The values for the energy in the different excited states, derived from both reactions and at different angles of observation, are in good agreement. The Q-values of the reactions 16O(d, p) 17O and 19F(d, α) 17O , in which the 17O nucleus is formed in its ground state, are 1.928 and 10.042 MeV, respectively. The Q-value for the reaction 16O(d, α) 14N was found to be 3.09 MeV, and the existence of two excited states of 14N was established. Ten excited states of 20F were observed in a study of the proton groups from the reaction 19F(d, p) 20F.