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

Abstract

The reaction dynamics induced by the 17F Radioactive Ion Beam on the proton-shell closed 58Ni 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 16O projectiles on the same target showed that the 17F 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 16O-induced reaction.