The j-dependence of the ( 19F, 16O) reaction

Abstract

The total angular momentum transfer ( j) dependence was studied for orbital angular momentum transfers l = 1, 2, and 3 in the ( 19F, 16O) reactions on 28, 30Si and 60Ni. In contrast to the strong j-dependence for the l = 2 transitions to 31, 33P states, no distinct j-dependence was found for the l = 1 and l = 3 transitions to 63Cu states. Previously reported results for the 28 Si( 19 F, 16O) 31 P reaction were re-analyzed using optical-potential sets which fit the elastic-scattering data for both the entrance and exit channels. Results of DWBA calculations without use of spin-orbit potentials were found to be out of phase with the data for all l-transfers and the j-dependence could not be reproduced. Both of these problems were alleviated by including spin-orbit forces in the optical potentials. However, a good fit to the 28Si( 19F, 16O) 31P data was obtained only if the optical potentials that fit the elastic scattering data were modified for the exit channel.