强激光与粒子束, 2014, 26 (4): 044002, 网络出版: 2014-04-24
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
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 high-energy flash X-ray radiography French Test Object collimation technology Monte Carlo method 3-grade collimating system
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。
Abstract
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.
陈楠, 高峰, 戴曼, 戴文华, 王敏鸿, 王利鸣, 周智. 基于法国实验客体的X射线准直技术研究[J]. 强激光与粒子束, 2014, 26(4): 044002. Chen Nan, Gao Feng, Dai Man, Dai Wenhua, Wang Minhong, Wang Liming, Zhou Zhi. Collimation technology research based on French Test Object[J]. High Power Laser and Particle Beams, 2014, 26(4): 044002.
PDF全文
