Strong reaction channels for the system F-17+Ni-58 at Coulomb barrier energies

The reaction dynamics induced by the F-17 Radioactive Ion Beam on the proton-shell closed Ni-58 target was studied at two colliding energies slightly above the Coulomb barrier. Charged reaction products were detected at forward angles and the quasi-elastic differential cross section was analyzed within the framework of the optical model in order to extract the reaction cross section and to investigate the relevance of direct reaction channels (inelastic scattering, breakup and transfer) at near-barrier energies. The comparison with the reaction induced by double-magic tightly-bound O-16 projectiles on the same target showed that the F-17 reaction cross section is moderately enhanced at the lower secondary beam energy. Direct reaction channels were also found to be more relevant than for the corresponding O-16-induced reaction.