中文摘要：

在激光约束聚变和箍缩聚爆实验中,为了分析内爆靶丸推进层的运动过程和评估激光辐射驱动的对称性和均匀性,需要得到靶丸内爆单色X射线二维空间分辨信息。为了诊断内爆高温等离子体X射线二维空间信息,利用晶体布喇格衍射原理研制了新型的成像系统。系统的核心元件为球面晶体分析器,球面晶体为云母球面晶体,弯曲半径为143.3mm。在中国工程物理研究院进行了单色X射线背光成像实验,磷屏成像板获得了清晰的Cr靶单色X射线二维网格图像。通过对实验所得背光图像分析,云母球面晶体成像系统得到的空间分辨率为86μm。实验结果表明,云母球面晶体可以应用于等离子体X射线的背光成像诊断研究。

英文摘要：

In order to study and diagnose the distribution,movement process and shape of the high-temperature plasma of pellet implosion,evaluate the driven symmetry and uniformity of laser radiation,analyze the promote layer motor process of target implosion of ICF radiation driven in the laser-driven inertial confinement fusion and the pinch implosion,a novel spherically bent crystal imaging system is developed based on the Bragg diffraction theory.The imaging system can obtain X-ray spectral information of high-temperature plasma and monochrome X-ray spatial information of ICF target implosion.The information can provide the theory basis for the optimum coupling design of the drive and target.The spherically bent Mica crystal analyzer is the most important component in image system,where the bent crystal radius is 143.3mm.The monochrome X-ray backlight imaging experiment using spherically bent Mica crystal has been carried out at the Chinese Academy of Engineering Physics.The detector（imaging plate）obtains two-dimensional,spatially-resolved,monochromatic backlight mesh imaging.By analyzing the backlight mesh imaging information of the experiment,the spatial resolution of the imaging system based on spherically bent Mica crystal is 68μm.The experimental results show that the spherically bent Mica crystal is adequate for monochromatic X-ray backlighting imaging diagnosis.