Abstract
On the basis of objective physics criteria, it is shown that the cross sections determined for partial photoneutron reactions on \({}^{51}\)V nucleus by the method of photoneutron multiplicity sorting, primarily at Livermore (USA) and Saclay (France), are not reliable because of large systematic uncertainties in them. New cross sections evaluated for such reactions by the experimental–theoretical method are found to satisfy the data reliability criteria. The discrepancies between the evaluated and experimental reaction cross sections are analyzed in detail. It is found that, in the case of the \({}^{51}\)V nucleus, which is relatively light, the disregard of the contribution from the (\(\gamma\), 1\(n\)1\(p\)) reaction is the main reason of sizable systematic uncertainties in the procedure used at Livermore to identify neutrons from the (\(\gamma\), 1\(n\)), (\(\gamma\), 1\(n\)1\(p\)), and (\(\gamma\), 2\(n\)) reactions.
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ACKNOWLEDGMENTS
We are grateful to Professor B.S. Ishkhanov for stimulating discussions and his great help in the analysis and interpretation of the data.
Funding
This research was performed at the Department of Electromagnetic Processes and Interactions of Atomic Nuclei at Skobeltsyn Institute of Nuclear Physics, Moscow State University.
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Varlamov, V.V., Davydov, A.I. & Orlin, V.N. Photoneutron Reactions on \({}^{{51}}\)V Nucleus: Systematic Uncertainties in Experiments and New Evaluated Data. Phys. Atom. Nuclei 84, 389–400 (2021). https://doi.org/10.1134/S1063778821030157
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DOI: https://doi.org/10.1134/S1063778821030157