Contribution of nucleon transfer to the elastic scattering of 28Si+/sup 58,64/Ni near the Coulomb barrier

Quasielastic-scattering cross sections of 28Si+/sup 58,64/Ni have been measured in the energy range E/sub c.m./=50.0--76.5 MeV. The transfer channels with a large cross section produce a considerable effect on the elastic scattering for 28Si+64Ni, while the effect is small for 28Si+58Ni because of the small transfer yield. A coupled-channels calculation including one neutron transfer and inelastic excitation explains well not only the energy dependence but also the isotope dependence of the quasielastic scattering with a single energy- and isotope-independent bare potential