) SSM( مطالعه توزيع زاويه اي پاره هاي شكافت القايي حاصل از واكنشهاي يون سنگين براساس مدل انقطاع آماري

Study of Angular Distribution of Fission Fragments in Heavy Ion Induce Reactions by SSM

The anomalous behavior of angular distribution of fission fragments reported by different authors during last years. We can explain some part of these anomalous behavior by TSM, also associated it on large value spins of targets or projectiles or the fissionability parameter (Z2/A ) of compound nucleus. For large value of anisotropy. the SSM is more useful and the parameter S2, is obtained by best fitting the analytical relation to experimental data. In this research work the SSM is employed for explaining the anisotropies of these reactions 10B(64Mev)+237NP ,10B(60Mev)+232Th,12C(72Mev)+237Np, 12C(79Mev)+232Th,16O(88Mev)+232Th 16O(94Mev)+237Np. And we have show that we can explain the angular distribution of fission fragments by SSM when at least the spins of projectile or target is nonzero at moderate energies, Also the ratio of spherical moment of inertia to effective moment of transition nucleus is calculated by this model.