Evaluated Cross Sections of Photoneutron Reactions on the Isotope Sn-116 and Spectra of Neutrons Originating from These Reactions

摘要

With the aid of the results obtained by evaluating cross sections of partial photoneutron reactions on the isotope Sn-116 and the energy spectra of neutrons originating from these reactions, the possible reasons for the well-known discrepancies between the results of different photonuclear experiments were studied on the basis of a combinedmodel of photonuclear reactions. On the basis of physical criteria of data reliability and an experimental-theoretical method for evaluating cross sections of partial reactions, it was found that these discrepancies were due to unreliably redistributing neutrons between (gamma, 1n), (gamma, 2n), and (gamma, 3n) reactions because of nontrivial correlations between the experimentally measured energy of neutrons and their multiplicity.