【作者】 金玉仁； 龙斌； 成智威； 徐辉； 王江； 韩小元；

【Author】 JIN Yu-ren~1,LONG Bin~(1,2),CHENG Zhi-wei~1,XU Hui~1,WANG Jiang~1,HAN Xiaoyuan~1 (1.Northwest Institute of Nuclear Technology,Xi’an 710024,China; 2.School of Nuclear Science and Technology,Lanzhou University,Lanzhou 730000,China)

【机构】 西北核技术研究所； 兰州大学核科学与技术学院；

【摘要】 社会上出现不明放射性物品可能产生严重的确定性效应,甚至造成社会混乱,危害社会稳定乃至国家安全。对其进行快速准确鉴别是提出合理的处理方案的基本依据。本文建立了不明放射物品鉴别工作方法,采用就地HPGeγ谱仪等现场检测手段,实验室HPGeγ谱仪测量、ICP-MS分析和密度测量等实验室分析手段,快速准确鉴定该物品的属性。对某一不明放射性物品的鉴别结果表明,该不明放射性物品属高纯度贫化铀金属,其²³⁵U与²³⁸U比值为0.454%。更多还原

【Abstract】 The unaware radioactive material（URM） appeared in the society may induce serious deterministic effect,even result in havoc and instability of the society.The rapid and accurate identification for URM is the premise for its reasonable treatment.In this paper,an identification procedure for URM was developed and which was successfully implemented in the identification of an URM.The In-situ HPGe gamma spectrometry etc was employed for the rapid preliminary identification, and the laboratory HPGe gamma spectrometry and ICP-MS as well as the density measurement were used for its final identification.One unaware radioactive material was assayed,and the results indicate that it is a kind of high pure depleted uranium metal with the ²³⁵U/²³⁸U atomic ratio of 0.454%.更多还原