Neutron cross-section calculations for 239Pu, 241Pu, 243Pu and 235Pu, 237U and 239U in the 1-150 keV energy region

An attempt has been made to give a self-consistent description of practically all the available experimental data on the interaction of 1-150 keV neutrons with the 239Pu nucleus. This level of description has been achieved by using the method of coupled channels instead of the ordinary optical model, the statistical model in its most sophisticated variant and also the results of channel analysis by the two-hump fission barrier model of experimental data on 239Pu (d, pf) and 238Pu (t, pf) reactions. The description of the experimental data on the interaction of neutrons with 239Pu was used as an example for studying the critical behaviour of the cross-sections of individual reactions in relation to target-nucleus and compound-nucleus properties. This is important in evaluating the accuracy of the calculated reaction cross-sections for the isotopes 241Pu, 243Pu and 235U, 237U and 239U. The calculations for these nuclei were performed by the same method and in the same energy region