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刘宇; 肖德鑫; 李鹏; 周征; 周奎; 单李军; 张鹏; 沈旭明; 胡栋材; 王建新; 吴岱; 杨兴繁; 黎明; 金晓
原子能科学技术, 07/2022, Volume: 56, Issue: 7Journal Article
TL503.92; 转换效率高、散热性能优异的辐射转换靶是高能微焦点工业CT的关键部件,本文设计了一种适用于高能(6 MeV)微焦点(直径约100μm)工业CT的先进旋转式辐射转换靶.通过模拟分析辐射转换靶X射线转换效率和热沉积,确定最优转换靶厚度,从而设计、加工出旋转式辐射转化靶,并成功应用于中国工程物理研究院应用电子学研究所高能微焦点工业CT验证装置.对比实验结果显示,在相同工况(电子束能量6 MeV,宏脉冲长度5 ms,宏脉冲流强1.5 mA,焦斑直径100μm)下,固定靶被电子束熔融,而旋转靶则能够承受电子束的轰击,验证了旋转式辐射转换靶的有效性和可靠性.
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