Excitation functions of (n, α) reaction cross-sections for some important isotopes from threshold to 20 MeV

摘要: Abstract The (n, α) reaction cross-sections from threshold to ∼20 MeV on some important nuclides 42Ca, 50,53Cr, 56,57Fe, 58,62Ni, and 63,65Cu involved in the reactor shielding design have been calculated using Hauser–Feshbach statistical model with preequilibrium effects by involving PCROSS option Empire 2.19. transmission coefficients for neutrons entrance channel are optical potential of Koning. In exit Avrigeanu has used. experimental values chosen carefully all isotopes, EXFOR data base. calculations compared existing as well evaluated files (ENDF/B-VI.0 JENDL-3.3). A good agreement between validates nuclear approaches increased predictive power supplement extend database that is required several applications.