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Title: Data on photoneutron reactions from various experiments for {sup 133}Cs, {sup 138}Ba and {sup 209}Bi nuclei

Abstract

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 {sup 133}Cs, {sup 138}Ba, and {sup 209}Bi nuclei. The cross sections for partial and total reactions satisfying the reliability criteria are evaluated within the experimental–theoretical method (σ{sup eval}(γ, in) = F{sub i}{sup theor} × σ{sup expt}(γ, xn)) on the basis of the experimental cross sections σ{sup expt}(γ, xn) and the results of the calculations within the combined model of photonuclear reactions.

Authors:
; ; ;  [1]
  1. Moscow State University, Skobeltsyn Institute of Nuclear Physics (Russian Federation)
Publication Date:
OSTI Identifier:
22612646
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Atomic Nuclei; Journal Volume: 79; Journal Issue: 4; Other Information: Copyright (c) 2016 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; ANNIHILATION; BARIUM 138; BISMUTH 209; BREMSSTRAHLUNG; CESIUM 133; CORRECTIONS; CROSS SECTIONS; EXPERIMENT RESULTS; PHOTONEUTRONS; PHOTONS; PHOTONUCLEAR REACTIONS

Citation Formats

Varlamov, V. V., E-mail: Varlamov@depni.sinp.msu.ru, Ishkhanov, B. S., Orlin, V. N., and Peskov, N. N. Data on photoneutron reactions from various experiments for {sup 133}Cs, {sup 138}Ba and {sup 209}Bi nuclei. United States: N. p., 2016. Web. doi:10.1134/S1063778816040219.
Varlamov, V. V., E-mail: Varlamov@depni.sinp.msu.ru, Ishkhanov, B. S., Orlin, V. N., & Peskov, N. N. Data on photoneutron reactions from various experiments for {sup 133}Cs, {sup 138}Ba and {sup 209}Bi nuclei. United States. doi:10.1134/S1063778816040219.
Varlamov, V. V., E-mail: Varlamov@depni.sinp.msu.ru, Ishkhanov, B. S., Orlin, V. N., and Peskov, N. N. 2016. "Data on photoneutron reactions from various experiments for {sup 133}Cs, {sup 138}Ba and {sup 209}Bi nuclei". United States. doi:10.1134/S1063778816040219.
@article{osti_22612646,
title = {Data on photoneutron reactions from various experiments for {sup 133}Cs, {sup 138}Ba and {sup 209}Bi nuclei},
author = {Varlamov, V. V., E-mail: Varlamov@depni.sinp.msu.ru and Ishkhanov, B. S. and Orlin, V. N. and Peskov, N. N.},
abstractNote = {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 {sup 133}Cs, {sup 138}Ba, and {sup 209}Bi nuclei. The cross sections for partial and total reactions satisfying the reliability criteria are evaluated within the experimental–theoretical method (σ{sup eval}(γ, in) = F{sub i}{sup theor} × σ{sup expt}(γ, xn)) on the basis of the experimental cross sections σ{sup expt}(γ, xn) and the results of the calculations within the combined model of photonuclear reactions.},
doi = {10.1134/S1063778816040219},
journal = {Physics of Atomic Nuclei},
number = 4,
volume = 79,
place = {United States},
year = 2016,
month = 7
}