TRANSFER-REACTIONS IN S-32+MO-92,MO-98,MO-100 AND NB-93 AT NEAR-BARRIER ENERGIES

Differential cross sections for quasielastic transfer were measured for S-32 beams bombarding (92),(98),Mo-100 and Nb-93 targets at laboratory energies of 109, 116, and 125 MeV. Distorted-wave Born approximation calculations are in good agreement with the one-nucleon transfer data at all energies. Large transfer cross sections were observed for (98),Mo-100 and Nb-93 targets which is consistent with the large sub-barrier fusion enhancement observed in the same systems. The transfer probability for one-nucleon transfer at large reaction distances is well described by the semiclassical model. There is a slope anomaly for two-proton stripping at energies just above the barrier but no anomaly for two-neutron pickup.