CROSS-SECTION MEASUREMENTS OF REACTIONS INDUCED BY NEUTRONS OF 14.5 MEV. ENERGY
CROSS-SECTION MEASUREMENTS OF REACTIONS INDUCED BY NEUTRONS OF 14.5 MEV. ENERGY
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DOI：
10.1139/p53-028
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发表时间：
1953-02
影响因子：
1.2
通讯作者：
E. Paul;R. L. Clarke
中科院分区：
文献类型：
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作者：
E. Paul;R. L. Clarke
测量了57个元素在14.5 MeV轰击下的激活截面。来自T3(d，n)HE4反应的中子。观察到了38个(n，p)、25个(n，α)和34个(n，2n)反应，它们产生了半衰期在几秒到几天之间的已知放射性产品。计数安排是使用含有标准数量的放射性材料的样本进行校准的。通过对T_3(d，n)H_4反应中的α粒子计数，对中子监测器进行了校准。对蒸发理论预测的截面进行了计算，并与观测值进行了比较。对于质量数大于100的带电粒子反应，理论截面太小。获得了高达10,000的σOBS/σCAL值。然而，(n，2n)反应的预测截面与观测值基本一致。讨论了对这些结果的一种可能的解释。
The activation cross sections were measured for 57 elements bombarded with 14.5 Mev. neutrons from the T3(d, n)He4 reaction. Thirty-eight (n, p), twenty-five (n, α), and thirty-four (n, 2n) reactions resulting in known radioactive products with half-lives between a few seconds and a few days were observed. The counting arrangement was calibrated using samples containing standardized quantities of radioactive materials. The neutron monitor was calibrated by counting the α-particles from the T3(d, n)He4 reaction. Calculations were made of the cross sections predicted by evaporation theory and compared with the observed values. For the charged particle reactions with mass number greater than 100 the theoretical cross sections were too small. Values of σ obs/σ cal as high as 10,000 were obtained. However, the predicted cross sections for the (n, 2n) reactions were in general agreement with the observed values. A possible interpretation of these results is discussed.