Abstract
A general formula is given for the calculation of the inscattering correction which is to be applied to the total cross section for fast neutrons, as measured by transmission experiments. It is shown that inelastic scattering and (n, 2n) reactions are negligible for this evaluation: only elastic scattering is to be taken into account. This influence can be estimated by comparison with some experimental results or by application of the diffraction theory of neutron scattering using, as nuclear radius, R = r 0A 1 3 where r 0 = 1.25 × 10 −13 cm; the maximum error involved in this evaluation is ± 20%.
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