The double differential cross section for reaction

The double differential cross section and the angle-integrated spectra of neutron emission, the prompt fission neutron spectra for reaction are consistent calculated and analyzed in the En⩽20 MeV energy range. In the calculations, the unified Hauser–Feshbach theory and the exciton model, the linear momentum dependent exciton state density model and the coupled channel theory are used to describe equilibrium emission, pre-equilibrium emission and direct emission of the particle. Theoretical calculations are compared with recent experimental data and other evaluated data from ENDF/B6 and JENDL-3.