STATISTICAL PRESCISSION POINT MODEL OF FISSION FRAGMENT ANGULAR-DISTRIBUTIONS

In light of recent developments in fission studies such as slow saddle to scission motion and spin equilibration near the scission point, th e theory of fission fragment angular distribution is examined and a ne w statistical prescission point model is developed. The conditional eq uilibrium of the collective angular momentum bearing modes at the pres cission point, which is guided mainly by their relaxation times and po pulation probabilities, is taken into account in the present model. Th e present model gives a consistent description of the fragment angular and spin distributions for a wide variety of heavy and light ion indu ced fission reactions.