The 7Li(18O, 16N)9Be reaction and optical potential of 16N + 9Be versus 16O + 9Be

Angular distributions for the 7Li(18O, 16N)9Be reaction at an energy of for the ground and excited states of 9Be and 16N were measured. The data were analyzed within the coupled-reaction-channels method for one- and two-step transfers of nucleons and clusters. The 7Li + 18O optical potential fitted to the 7Li + 18O elastic and inelastic scattering data was used in the reaction calculations. The needed spectroscopic amplitudes for transferred nucleons and clusters were calculated within the translational-invariant shell model. The 9Be + 16N potential parameters were deduced by fitting 7Li(18O, 16N)9Be reaction data for ground and excited states of 9Be and 16N. The reaction is dominated by deuteron transfer. The 9Be + 16N potential is compared with the 9Be + 16O potential deduced by fitting previously reported 9Be + 16O elastic scattering data at energies Ec.m.=5.4–100.9MeV and found to be less strongly absorbing.