球面弯晶分析器研制  

Research and development of a spherical bent crystal analyzer

作　　者：施军[1] 肖沙里[1] 王洪建[1] 唐昶环[2] 刘慎业[2] 

机构地区：[1]重庆大学光电技术及系统教育部重点实验室,重庆400030 [2]中国工程物理研究院激光聚变研究中心,四川绵阳621900

出　　处：《重庆大学学报（自然科学版）》2008年第4期397-400,共4页Journal of Chongqing University

基　　金：国家自然科学基金(NSAF基金)资助项目(10576041)

摘　　要：在激光聚变实验中为了获取等离子体的重要信息，采用球面弯曲晶体成像谱仪来研究等离子体辐射的X射线，利用球面弯晶对X射线进行诊断而提供时间、空间、光谱分辨。该强聚焦晶体能增强信噪比，提高谱仪的空间分辨能力及立体角收集辐射能力。实验结果表明球面弯晶分析器对波长范围为0．2～0．4nm的X射线其分辨率可达600～1000，聚光效率在同样距离条件下比平磊分析器高一个数量级以上，适合于研究等离子体X射线光谱学。An X-ray imaging spectrometer with a spherically bent crystal was used to investigate critical issues in laser fusion experiments. A High-resolution bent crystal spectrometer for Z-pinch and laserproduced plasmas was developed on paper. We described the study of X-ray diagnostics to get temporal, spatial, and spectral resolutions simultaneously for the laser fusion experiments with a spherically-bent crystal. The use of a strongly-focusing crystal could significantly increase the signal-to-noise ratio. The collection solid angle of the spherically-bent crystal was larger than that of the pinhole camera and zone plate. The sensitivity of the focusing crystal analyzer was greatly enhanced. The results indicate that the calculated wavelength resolution is 600～1 000 in 0.2～0.4 nm, and the spherically bent crystal is suitable for study of diagnosing soft X-ray spectroscopy.

关 键 词：X射线光谱学 等离子体诊断 弯曲晶体 球面成像 

分 类 号：TL651[核科学技术—核技术及应用]