Calculation of Neutron Nuclear Data on Selenium Isotopes for JENDL-4

Abstract

Neutron nuclear data on ^{74,76,77,78,79,80,82}Se have been calculated for the evaluated nuclear data library JENDL-4. Simultaneously calculated are the total, elastic and inelastic scattering, (n, γ), (n, p), (n, d), (n, t), (n, ³He), (n, α), (n, np), (n, nd), (n, nα), (n, 2n), (n, 3n) reaction cross sections, angular distributions of emitted particles, and energy distributions of emitted particles and γ-rays. The statistical model was applied to calculate these quantities. Coupled-channel optical model parameters were used for neutrons. Preequilibrium and direct-reaction processes were taken into account in addition to the compound process. The present calculations are consistent with available experimental data. The calculated results are compiled into JENDL-4.

KEYWORDS:

• neutron nuclear data
• calculation
• selenium isotopes
• cross section
• JENDL-4
• coupled-channel optical model
• statistical model