Abstract
Popular nuclear models and approaches used for the description of the α-particle emission in the nucleon induced reactions at the intermediate energies were analyzed. The α-particle emission spectra, the non-equilibrium α-particle yields and the total α-production cross-sections were calculated with the help of the GNASH code, the modified ALICE code, the DISCA code and the different codes from the MCNPX package. The results of the calculation were compared with available experimental data, systematics values and data from ENDF/B-VI and JENDL-HE. Data from FENDL/A-2, JENDL-3.3, CENDL-2 and JEFF-3/A were also used for the comparison with calculations and measured data for neutron induced reactions below 20 MeV. The discrepancies between the calculations and the experimental data have been analyzed. The α-particle production cross-section has been evaluated for 181Ta, natW and 197Au at the energies of the incident neutrons and protons from several MeV to 1 GeV.
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