An advanced uranium ore grade estimation method based on photofission driven by an e-LINAC
An advanced uranium ore grade estimation method based on photofission driven by an e-LINAC
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一种基于 e-LINAC 驱动的光裂变的先进铀矿品位估算方法
DOI：
10.1016/j.nima.2021.165710
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发表时间：
2021-10
期刊：
影响因子：
--
通讯作者：
Yang Yigang
中科院分区：
文献类型：
--
作者：
Cui Tongyuan;Yang Yigang
讨论了一种通过分析(β，裂变)后的γ延迟中子来评价铀(U)矿石品位的方法。通过测量238U激发的β延迟裂变中子，解决了限制传统放射性等级估计方法准确性的U-Ra不平衡问题。本研究利用6 MeV电子直线加速器(e-LINAC)发射的6 MV韧致辐射光子辐照铀矿样品，并设计了一个环绕慢化器的热中子探测器，用于记录每个X射线脉冲后发射的中子。尽管在分析环境中，由于基质核素发射的光中子的干扰，导致瞬发裂变中子被丢弃，但β延迟中子计数与铀矿石品位之间存在良好的线性关系，表明该方法在铀矿石的现场分析中具有良好的应用前景。
A method for evaluating the grade of uranium (U) ores through the analysis of β-delayed neutrons following (γ, fission) is discussed. By measuring β-delayed fission neutrons stimulated from 238 U, the U-Ra disequilibrium problem, which limits the accuracy of traditional grade estimation methods that rely on measuring radioactivity, is addressed. In this research, 6 MV bremsstrahlung photons, delivered by a 6 MeV electron linear accelerator (e-LINAC), were used to irradiate U ore samples, and a moderator surrounded thermal neutron detector was designed to register the emitted neutrons after each X-ray pulse. Although the prompt fission neutrons were discarded due to the interference caused by the photoneutrons emitted from the matrix nuclides in the analytical environment, an excellent linear relationship was observed between the counts of β-delayed neutrons and U ore grades, demonstrating that this method is promising for the in-situ analysis of U ores.
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DOI：
--
发表时间：
2011
期刊：
--
影响因子：
--
作者：
Zhao Yi-chuan
通讯作者：
Zhao Yi-chuan
影响因子：
1.6
作者：
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影响因子：
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影响因子：
3.6
作者：
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影响因子：
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作者：
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