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高能闪光照相中钨球散射规律研究
引用本文:施将君,李必勇,宗嵩,刘军,刘进.高能闪光照相中钨球散射规律研究[J].强激光与粒子束,2004,16(4):526-530.
作者姓名:施将君  李必勇  宗嵩  刘军  刘进
作者单位:中国工程物理研究院 流体物理研究所,四川 绵阳 621900
基金项目:国防科技基础研究基金资助课题
摘    要: 用解析法和Monte Carlo法研究了钨球闪光X光照相的散射照射量空间分布随钨球半径、系统中元件构成以及保护器件与记录平面间距的变化规律。指出散射照射量的空间分布是不均匀的,它随球半径增加而变大;保护器件是散射照射量的主要来源,增加从保护器件到记录平面的距离,可以降低散射分布不均匀性,以及有效地减少散射。

关 键 词:钨球  保护器件  散射照射量  直散比  散射分布不均匀性
文章编号:1001-4322(2004)04-0526-05
收稿时间:2003/11/18
修稿时间:2003年11月18

Research on scatter law of tungsten sphere in high energy flash X-ray radiography
SHI Jiang-jun,LI Bi-yong,ZONG Song,LIU Jun,LIU Jin.Research on scatter law of tungsten sphere in high energy flash X-ray radiography[J].High Power Laser and Particle Beams,2004,16(4):526-530.
Authors:SHI Jiang-jun  LI Bi-yong  ZONG Song  LIU Jun  LIU Jin
Institution:Institute of Fluid Physics, CAEP, P.O.Box 919 105, Mianyang 621900, China
Abstract:It is studied, with the analytic method and the Monte-Carlo numerical simulation for the flash X-ray radiography of the tungsten sphere, that the scattered exposure and its space distribution are influenced by the sphere radius, the configuration of cells in the sphere, and the distance between the back cone and the recording plane. The results show that the scattered component of exposure is not homogeneous in space and increase while the radius increases. Enlarge the distance from the back cone to the recording plane can mitigate this inhomogeneity. It can be confirmed that the back cone is the primary source of the scattered exposure, and that increasing the distance between the back cone and the recording plane can reduce the scattered exposure effectively.
Keywords:Depth-penetration object  Back protection  Scatter exposure  Ratio of direct to scattered exposure  Scatter inhomogeneity  
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