Abstract
Fission fragment angular distributions were measured in {sup 11}B+{sup 243}Am reaction in the beam energy (E{sub lab}) range of 60-72 MeV. Experimental anisotropies in {sup 11}B+{sup 243}Am reaction were found to be higher than the values calculated using the statistical theory indicating contribution from noncompound nucleus fission. For {sup 11}B+{sup 243}Am reaction, entrance channel mass asymmetry is higher than the Businaro-Gallone critical mass asymmetry. Observation of anomalous fission fragment angular distribution in {sup 11}B+{sup 243}Am reaction possibly indicates that the target deformation plays an important role in deciding the contribution from noncompound nucleus fission.
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