强激光与粒子束, 2011, 23 (9): 2415, 网络出版: 2011-10-27
KBAX射线显微镜空间分辨力模拟和Au网格实验测量
Raytracing simulation and Augrids experimental test on spatial resolution of KBA Xray microscope
KBAX射线显微镜 视场 掠入射角 光线追踪模拟 空间分辨力 KBAX ray microscope field of view grazing incidence angle raytracing simulation spatial resolution
摘要
通过光线追踪模拟在SGⅡ激光装置上利用第9路激光入射到Cu背光靶面产生X射线,通过Au网格背光照相,利用KBA显微镜对此网格成像,获得了清晰的网格图像。通过对实验网格数据的分析发现:在掠射角减小的方向,空间分辨力随视场的变化比掠射角增大的方向变化小,与光线追踪模拟比较,二者均表明KBA的视场是非对称的,从实验图像数据得出,视场的不对称相对于中心位置约为30%。
Abstract
The spatial resolution of KBA Xray microscope is studied with raytracing simulation and experimental test. In the experiment, the imaging object is Au grid, backlit by Xrays produced by the 9th laser interaction with Cu target on Shenguang Ⅱ laser facility. The spatial resolution of KBA Xray microscope is found to be asymmetric about the center of its field of view. Moreover, the experimental data show that, the variation of resolution in the reducing direction of grazing incidence angle is smaller than that in the increasing direction, and the resolution asymmetry is about 30% relative to the field center.
董建军, 杨正华, 曹柱荣, 韦敏习, 詹夏宇, 刘慎业, 丁永坤. KBAX射线显微镜空间分辨力模拟和Au网格实验测量[J]. 强激光与粒子束, 2011, 23(9): 2415. Dong Jianjun, Yang Zhenghua, Cao Zhurong, Wei Minxi, Zhan Xiayu, Liu Shenye, Ding Yongkun. Raytracing simulation and Augrids experimental test on spatial resolution of KBA Xray microscope[J]. High Power Laser and Particle Beams, 2011, 23(9): 2415.