Determination of the transfer cross section under the threshold of 238U fission, as obtained from experiments on the transmission of fission neutrons

The authors assess the cross section of the transfer from the values corresponding to a sphere with transfer cross section, rather than one, in contrast to the measured transmission of fission. The goemetry of the experiment is very simple and the experiments were made with metal spheres of iron, nickel, 1Kh18N10T steel, and U-238. The results of the experiments are presented together with preliminary calculations made with the Monte Carlo method in the multigroup transport approximation using the BNAB-78 system of constants