Data on photoneutron reactions from various experiments for 133Cs, 138Ba and 209Bi nuclei
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- 作者：V. V. Varlamov ; B. S. Ishkhanov ; V. N. Orlin ; N. N. Peskov
- 刊名：Physics of Atomic Nuclei
- 出版年：2016
- 出版时间：July 2016
- 年：2016
- 卷：79
- 期：4
- 页码：501-513
- 全文大小：1,341 KB
- 刊物类别：Physics and Astronomy
- 刊物主题：Physics
Elementary Particles and Nuclei
Russian Library of Science - 出版者：MAIK Nauka/Interperiodica distributed exclusively by Springer Science+Business Media LLC.
- ISSN：1562-692X
- 卷排序：79
文摘
Basic methods for determining cross sections for photoneutron partial reactions are examined. They are obtained directly in experiments with quasimonoeneregetic annihilation photons or from the cross section for the (γ, xn) = (γ, 1n) + 2(γ, 2n) + 3(γ, 3n) +... neutron-yield reaction in experiments with bremsstrahlung photons by introducing corrections based on statistical nuclear-reaction theory. The difference in the conditions of these experiments, which leads to discrepancies between their results because of sizable systematic errors, is analyzed. Physical criteria are used to study the reliability of data on the photodisintegration of 133Cs, 138Ba, and 209Bi nuclei. The cross sections for partial and total reactions satisfying the reliability criteria are evaluated within the experimental–theoretical method (σeval(γ, in) = Fitheor × σexpt(γ, xn)) on the basis of the experimental cross sections σexpt(γ, xn) and the results of the calculations within the combined model of photonuclear reactions.Original Russian Text © V.V. Varlamov, B.S. Ishkhanov, V.N. Orlin, N.N. Peskov, 2016, published in Yadernaya Fizika, 2016, Vol. 79, No. 4, pp. 315–327.