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首页> 外文期刊>Annals of nuclear energy >Application of photofission reaction to identify high-enriched uranium by bremsstrahlung photons
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Application of photofission reaction to identify high-enriched uranium by bremsstrahlung photons

机译：消泡反应在Bremsstrahlung光子鉴定高富富富富铀的应用

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The applicability of the photofission reaction ratio (PFRR) method to identify high-enriched uranium is studied by switching the photon source from the Gaussian spectrum to a bremsstrahlung spectrum. The combination of 6 and 11 MeV Gaussian photon energy was used in previous study for applying PFRR method because the photofission cross sections between U-235 and U-238 at these two energies differ significantly. A parametric study was conducted with the incident electron energy 7.0 MeV and the result showed that these electrons generate similar photofission reactions as that of 6.0 MeV Gaussian photons, while 13.5 MeV electrons is found to give even better results for PFRR considering the measurement noise contributed by multiple neutron emission, (gamma, 2n) reaction. Bremsstrahlung photons were injected into a 1 mm thick uranium metal target with varying uranium enrichment. The PFRR increases linearly with uranium enrichment, and is found to provide a higher sensitivity than the Gaussian photons owing to higher total photofission reactions. (C) 2021 Elsevier Ltd. All rights reserved.
机译：通过将来自高斯光谱的光子源从高斯光谱切换到Bremsstrahlung光谱，研究了消化反应比（PFRR）方法的适用性来鉴定高富富铀铀。在先前的研究中使用6和11MeV高斯光子能量的组合用于施加PFRR方法，因为在这两个能量下U-235和U-238之间的光缺陷截面显着不同。用事件电子能源7.0MeV进行参数研究，结果表明，这些电子产生了类似的光散反应，因为6.0MeV高斯光子的相似的光散反应，而考虑到贡献的测量噪声，PFRR为PFRR提供了更好的结果。多个中子发射，（γ，2N）反应。将Bremsstrahlung光子注射到具有不同铀浓缩的1mm厚的铀金属靶标中。 PFRR与铀浓缩线性线性增加，发现由于较高的总光缺失反应，提供比高斯光子更高的灵敏度。 （c）2021 elestvier有限公司保留所有权利。

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