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环形电子束积分图像诊断技术

High Power Laser and Particle Beams(2011)

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Abstract
采用图像诊断方法对高能环形电子束形状及空间尺寸进行了研究,以高能脉冲环形电子束轰击高Z靶材料产生脉冲X射线,X射线经过X射线增感屏转换为可见光,用单次图像采集系统获取可见光的积分图像。为满足诊断所需的空间分辨和系统灵敏度,通过理论计算确立了靶的材料、厚度及X射线增感屏的型号和厚度等参数。根据测试环境,设计了系统的现场安装结构,系统基本满足测试要求。分析从实验中获取的图像,可知环形电子束的内径为36.5mm,环厚为1mm,环形不均匀,水平方向电子束强。
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Key words
X-ray intensifying screen,CCD,image diagnosis,annular electron beam
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