X射线相衬成像法检测内爆靶参数  

Measurement of implosion target parameters by X-ray phase contrast imaging

作　　者：高党忠[1] 赵学森[1,2] 马小军[1] 孟婕[1] 刘学[1] 贾鹏[1] 

机构地区：[1]中国工程物理研究院激光聚变研究中心,四川绵阳621900 [2]哈尔滨工业大学精密工程研究所,哈尔滨150001

出　　处：《强激光与粒子束》2012年第11期2627-2630,共4页High Power Laser and Particle Beams

基　　金：国家高技术发展计划项目

摘　　要：理论分析了利用X射线同轴离焦相衬成像法测量金黑腔内塑料中心微球位置的可行性,在此基础上进行了实验研究。实验结果证明,由于低Z低密度材料对高能X射线有相位调制作用,因此仍能够形成一定的图像反差,这种效应并不依赖X射线的能量,因此在一定的尺度范围内,可以实现高Z高密度材料与低Z低密度材料在高能X射线下同时成像,克服了传统吸收成像的不足,最终实现了内爆靶装配参数的精密检测。The feasibility of measuring the location of the plastic microsphere in the gold hohlraum target by using coaxial-of-focus X-ray phase contrast imaging was theoretically analyzed, based on which an experiment was carried out. The experimental results show that, due to the phase modulation of low Z and low-density materials to high energy X-ray, a certain image contrast could be formed. This effect is independent on X-ray energy, so in a certain range of sizes, simultaneous imaging of high Z high-density and low Z low-density materials in the high-energy X-ray is achieved, which overcomes the shortcomings of traditional absorption imaging. The precision assembly parameters measurement of implosion target is realized.

关 键 词：惯性约束聚变 内爆靶 金黑腔 X射线相衬成像 装配参数检测 

分 类 号：TH744[机械工程—光学工程]