FISSION FRAGMENT ANGULAR-DISTRIBUTIONS AT NEAR-BARRIER ENERGIES IN B-11, C-12, N-14-209(BI)

Fission fragment angular distributions and fission excitation function s have been measured for B-11, C-12, and N-14+Bi-209 systems at near-b arrier energies. The measured fission fragment anisotropies are in agr eement with the predictions of the standard saddle point statistical m odel. For these systems, there is no evidence for any ''anomalous'' be havior of the anisotropies as a function of both energy and entrance c hannel mass asymmetry. The present results combined with the data avai lable for O-16, F-19+Pb-208, and O-16+Bi-209 systems and for deformed actinide targets systems are consistent with the conjecture that targe t deformation plays a strong role in the observed anomalous anisotropi es in actinide target.