Influence of spin on fission fragments anisotropy

An analysis of selected fission fragment angular distribution when at least one of the spins of the projectile or target is appreciable in induced fission was made by using the statistical scission model. The results of this model predicate that the spins of the projectile or target are affected on the nuclear level density of the compound nucleus. The experimental data was analyzed by means of the couple channel spin effect formalism. This formalism suggests that the projectile spin is more effective on angular anisotropies within the limits of energy near the fusion barrier. Koriscenjem modela statistickog reza izvrsena je analiza ugaone raspodele odabranog fisionog fragmenta, kada je u indukovanoj fisiji procenjen bar jedan od spinova projektila ili mete. Rezultati ovog modela predvidjaju da spinovi projektila ili mete uticu na gustinu nuklearnog nivoa slozenog jezgra. Eksperimentalni podaci analizirani su formalizmom uparenog spinskog efekta. Ovaj formalizam ukazuje da spin projektila vise utice na ugaonu anizotropiju u energetskim granicama bliskim fuzionoj barijeri.