高能X射线双能成像法中的物质识别

来源 :高能物理与核物理 | 被引量 : 0次 | 上传用户：fxlilac

【摘要】

：

研究了边界能量为1-10MeV的高能X射线成像系统中采用双能成像法识别物质问题.通过研究其物理机理,提出了一个近似线性的数学模型;定义了物质识别灵敏度用于评价物质识别效果;

【作者】

：

王学武李荐民康克军唐传祥张丽陈志强李元景钟华强

【机构】

：

清华大学工程物理系

【出处】

：

高能物理与核物理

【发表日期】

：

2004年期

【关键词】

：

高能X射线成像双能成像物质识别电子直线加速器能谱调制 high-energy X-ray imaging dual-energy imaging mat

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论文部分内容阅读

研究了边界能量为1-10MeV的高能X射线成像系统中采用双能成像法识别物质问题.通过研究其物理机理,提出了一个近似线性的数学模型;定义了物质识别灵敏度用于评价物质识别效果;发现了双能X射线的最优能谱分布区间.提出并验证了面向最优能谱分布区间的双能X射线能谱调制方法,大大提高了物质识别灵敏度,并较好解决了不易识别薄物质的问题.建成了9MeV/6MeV交替双能成像实验样机,获得了物质识别着色图像.相关实验研究结果与理论研究符合得很好.

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高能X射线双能成像法中的物质识别

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