SUBBARRIER ONE-NEUTRON AND 2-NEUTRON PICKUP MEASUREMENTS IN S-32-93, MO-98, MO-100 REACTIONS AT 180-DEGREES(NB)

Excitation functions for sub-barrier one- and two-neutron pickup react ions were measured for E(lab) less-than-or-equal-to 106 MeV in S-32+Nb -93, Mo-98, Mo-100 systems by detecting targetlike recoils at 0-degree s using a recoil mass spectrometer. The slopes of transfer probability vs distance of closest approach are in good agreement with binding en ergies, indicating the absence of a ''slope anomaly.'' Angle-integrate d transfer cross sections derived from measured 180-degrees yields are consistent with enhancements in previously measured fusion yields for the S-32+Mo-98, Mo-100 SySteMs.