Calculation of average radiative-capture cross sections for 103–105 eV neutrons

Abstract

The average cross sections for radiative neutron capture have been calculated for 30 isotopes of Rb, Zr, Mo, Sn and Sm on the basis of the statistical theory of nuclear reactions. Nuclear surface penetrations obtained from the optical model, and level densities corresponding to the Fermi gas model were used in the calculation.

The results of the calculations are compared with the available experimental data at 25 keV. It is shown that there is a possibility of satisfactory quantitative evaluations of the average capture cross sections in isotopes for which there are no experimental data on the mean neutron resonance parameters.