MEND—A Code for Calculating Nuclear Data of Mediumheavy Nuclei below 250 MeV
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Abstract
Based on the spherical optical model, preequilibrium statistical theory, and HauserFeshbach theory, etc., the code MEND (Medium Energy Nuclear Data) is written for calculating the complete set of nuclear data of mediumheavy nuclei in mediumlow energy region (≤250 MeV). For the reactions induced by neutron and proton below 250 MeV, the total cross sections, reaction cross sections, elastic scattering differential cross sections, double differential cross sections and energy spectra, etc. calculated by the code MEND, generally agree with those corresponding experimental data. MEND is a foundational program for nuclear reaction in mediumlow energy region and is wildely used for nuclear data calculation and establishing ENDF/B6 format files of mediumlow energy region in China.
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