Calculation and analysis of n+~(90,91,92,94,96,nat)Zr reactions in the E_n ≤250 MeV energy range

摘要

All of reaction cross sections, angular distributions, energy spectra, y-ray production cross sections, and the double differential cross section for neutron, proton, deuteron, triton, helium and alpha emission are calculated and analyzed for n+~(90,91,92,94,96,nat)Zr at incident neutron energies from 0.1 to 250 MeV. The optical model, intranuclear cascade model, the unified Hauser-Feshbach theory and the exciton model which included the improved Iwamoto-Harada model are used. Theoretical calculated results are compared with existing experimental data and other evaluated data from ENDF/B-V1.8, ENDF/B-VII.0 and JENDL-3.3. The optical model potential parameters are obtained according to the experimental data of total, nonelastic cross sections and elastic scattering angular distributions.