基于法国实验客体的X射线准直技术研究  

Collimation technology research based on French Test Object

作　　者：陈楠[1] 高峰[1] 戴曼[1] 戴文华[1] 王敏鸿[1] 王利鸣[1] 周智[1] 

机构地区：[1]中国工程物理研究院流体物理研究所、脉冲功率科学与技术重点实验室,四川绵阳621900

出　　处：《强激光与粒子束》2014年第4期46-49,共4页High Power Laser and Particle Beams

摘　　要：通过研究法国实验客体(FTO)的闪光照相过程,设计了静态照相过程中采用的准直措施,除传统的一二级准直体外,还通过添加三级准直体来进一步控制入射到客体边缘部分的X射线,从而降低散射的影响。蒙特卡罗方法模拟结果表明,采用三级准直技术可以有效地控制散射的影响,图像接收平面各边界的直散比有了明显的提升。The flash X-ray radiography of the French Test Object(FTO)was studied and a 3-grade collimating system was designed to reduce the generation of scattered background.Except for the traditional 2-grade collimating system,we adopted a third collimator to further control the scattered background.Monte-Carlo simulations suggest that the 3-grade collimating system can effectively control the influence of scattering.The direct-exposure scattered-exposure ratio along each border between different materials can be greatly improved in the accepting plane.

关 键 词：高能闪光照相 法国实验客体 准直技术 蒙特卡罗模拟 三级准直 

分 类 号：TL53[核科学技术—核技术及应用]