The systematics of neutron reaction cross sections

The parameterized theoretical formulae of excitation functions for ( n , 2 n ) and ( n, γ ) reactions have been established, and for ( n,tot ), ( n,non ), ( n ,3 n ), ( n,p ), ( n,d ), ( n,t ), ( n , 3 He ) and ( n,α ) have been recommended. According to these formulae, the SEF code have been developed for systematics calculation of these reactions. The calculated results with the systematics of the corresponding reactions of the discretional nucleus can be provided by the SEF code in the applied range quickly. At the same time, the comparison of calculated results with experimental and evaluated data can be given graphically.