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The Cross-Section Investigation of (n, α) Reaction on Chromium Isotopes

机译:(n,α)反应对铬同位素的截面研究

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Cross-sections of the (n, α) reaction on chromium isotopes are of great importance for determin- ing the radiation hardness of stainless steel, which is widely used in nuclear reactors. The EXFOR library con- tains a limited amount of the relevant experimental data, mainly for the reactions induced by neutrons with an energy around 14 MeV. There are no experimental data on the probability of the (n, α) reaction at the fis- sion neutron energies. In this work we present results of investigating the ~(50)Cr(n, α) and ~(52)Cr(n, α) reactions. It is shown that the ENDF/B VII library evaluations for the ~(50)Cr(n, α) reaction are about 20 times as high as our experimental data. In addition, a structure that was predicted in none of the libraries is observed in the excitation function of the ~(50)Cr(n, α) reaction. The ~(52)Cr(n, α) reaction cross-sections at reactor neutron ener- gies are obtained for the first time.
机译:铬同位素上的(n,α)反应的截面对于确定不锈钢的辐射硬度非常重要,不锈钢在核反应堆中广泛使用。 EXFOR库仅包含有限数量的相关实验数据,主要用于中子在14 MeV左右的能量引起的反应。没有关于裂变中子能量下(n,α)反应概率的实验数据。在这项工作中,我们提出了研究〜(50)Cr(n,α)和〜(52)Cr(n,α)反应的结果。结果表明,〜(50)Cr(n,α)反应的ENDF / B VII库评估约为我们实验数据的20倍。另外,在〜(50)Cr(n,α)反应的激发函数中未观察到任何一个库中预测的结构。首次获得反应堆中子能的〜(52)Cr(n,α)反应截面。

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