MEAN ANGULAR MOMENTA IN HEAVY-ION FUSION

The results of the measurement of fusion cross sections sigma(fus) and mean angular momenta <l> for the five systems O-16+Cd-112, Si-28+Mo-9 4,Mo-100 and Ni-58,Ni-64+Ni-64 are reported. The direct comparison bet ween the fusion excitation function and <l> (E) confirms consistency o f the two independent observables. By analyzing the data, in the frame work of the coupled channels (CC) approach a good overall agreement be tween experiment and model predictions has been found. In particular t he influence of 2n-transfer channels with positive Q-values is put in evidence.