高能X射线对贫铀材料的活化性能研究  

Study on activation properties of depleted uranium materials by high energy X-ray

作　　者：张小刚 俞东宝[1] 汤慧[1] 申俊华[1] 葛腾 ZHANG Xiaogang;YU Dongbao;TANG Hui;SHEN Junhua;GE Teng(China North Nuclear Fuel Co.,Ltd.,Baotou 014035,China)

机构地区：[1]中核北方核燃料元件有限公司,内蒙古包头014035

出　　处：《物理测试》2022年第6期57-61,共5页Physics Examination and Testing

摘　　要：为了确保足够的穿透能力,多采用加速器装置产生的较高能量X射线进行贫铀材料内部缺陷的准确测量。高能量的光子撞击高原子序数的物质时会产生中子。中子有较高破坏性的放射生物效应。中子射线的屏蔽方式也和X射线的屏蔽方式存在显著差异。从射线检测的安全角度考虑,需要开展高能X射线对贫铀材料活化产生中子的性能研究。通过理论分析和数学模型建立,开展不同能量的X射线与贫铀合金作用中产生中子的能量下限研究,为产品内部缺陷检测中射线源能量上限的选择提供安全指导。In order to ensure the sufficient penetration ability, the high-energy X-rays generated by the accelerator device are often used to accurately measure the internal defects of depleted uranium materials. High energy photons produce neutrons when they collide with the matter with high atomic number. Neutrons have highly destructive radiobiological effects. The shielding mode of neutron ray is also significantly different from that of X-ray. Considering the safety of radiographic testing, it is necessary to study the properties of neutrons produced in activation of depleted uranium materials by high-energy X-rays. Through theoretical analysis and mathematical model establishment, the lower energy limit of neutrons generated in the interaction between X-rays with different energy and depleted uranium alloy was investigated. The study could provide safety guidance for the selection of upper energy limit of ray source in product internal defect detection.

关 键 词：贫铀材料 高能X射线 光核反应 中子 

分 类 号：TL21[核科学技术—核燃料循环与材料] O434.1[机械工程—光学工程]