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- W3088692406 abstract "The experimental data for photoneutron reaction cross sections for <sup>127</sup>I obtained using beams of quasimonoenergetic annihilation photons and the method of neutron multiplicity-sorting at Livermore (USA) and Saclay (France) were analyzed using objective physical data reliability criteria. It was found that data of both laboratories contain significant systematic uncertainties and therefore are not reliable. New data for partial and total photoneutron reactions cross sections for <sup>127</sup>I satisfied physical criteria of data reliability were evaluated using experimental-theoretical method based on both experimental neutron yield reaction cross-section and results of calculation in the combined photonucleon reaction model (CPNRM). The neutron yield reaction cross-section obtained at Saclay (France) was used in evaluation procedure. The newly evaluated cross sections for partial (<i>γ</i>, 1<i>n</i>), (<i>γ</i>, 2<i>n</i>) and (<i>γ</i>, 3<i>n</i>) reactions for <sup>127</sup>I were used for discussion in detail the problems of significant disagreements between experimental data for many nuclei obtained at Saclay and Livermore. It was found that systematic uncertainties of experimental data for the (<i>γ</i>, 1<i>n</i>), (<i>γ</i>, 2<i>n</i>), and (<i>γ</i>, 3<i>n</i>) reactions cross sections for <sup>127</sup>I obtained at both laboratories are of different nature. One of the reasons of noticeable systematic uncertainties of cross sections obtained are the shortcomings of the procedures used to separate counts into 1<i>n</i>, 2<i>n</i>, and 3<i>n</i> events. At the same time it was shown that the main reason of significant disagreements between new evaluated data and data obtained at Livermore experiment for <sup>127</sup>I is the loss of many neutrons from the (<i>γ</i>, 1<i>n</i>) reaction. This situation is analogous to those in Livermore experiments for <sup>75</sup>As and <sup>181</sup>Ta." @default.
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- W3088692406 date "2020-01-01" @default.
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- W3088692406 title "Photodisintegration of <sup>127</sup>I: Systematic Uncertainties of Experiments and Data Evaluated Using Physical Criteria" @default.
- W3088692406 doi "https://doi.org/10.11648/j.ajpa.20200805.11" @default.
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