软X射线椭圆晶体谱仪的研制  

Design of Soft X-ray Elliptical Crystal Spectrometer

作　　者：熊先才[1] 钟先信[2] 肖沙里[2] 钱家渝[2] 

机构地区：[1]重庆大学测量工程系,重庆400030 [2]重庆大学光电技术及系统教育部重点实验室,重庆400030

出　　处：《仪器仪表学报》2005年第12期1219-1222,共4页Chinese Journal of Scientific Instrument

基　　金：国家863高技术(863-804-3)资助项目

摘　　要：为了测量激光等离子体软X射线的空间和时间分辨光谱,研制了一种新型的双通道椭圆晶体谱仪,椭圆的离心率和焦距分别为0.9586和1350mm.将两个完全相同的椭圆晶体分析器进行上下对称布置,在上通道用软X射线CCD相机测量空间分辨光谱,在下通道用软X射线条纹相机测量时间分辨光谱.利用KAP椭圆晶体作色散元件,测量的波长范围是1.33～2.46nm.首次在'星光Ⅱ'激光装置上进行了打靶实验,利用该谱仪配软X射线CCD相机获取了钛激光等离子体X射线的光谱,实验结果表明该谱仪的最高光谱分辨率可以达到1173.In order to measure the space and time resolved spectra of laser-produced plasma soft X-ray,a novel double-channel elliptical crystal spectrometer has been developed,the elliptical eccentricity and focal distance are 0. 9586 and 1350mm,respectively. Two elliptical crystal analyzers are Symmetrically arranged in the up-and-down direction,the space-resolved spectrum is recorded with a soft X-ray CCD camera in the upper channel,and the time-resolved spectrum is recorded with a soft X-ray streak camera in the lower channel. The KAP crystals are adopted as the dispersive elements,which measure X-ray in the 1.33-2.46nm range. The first experiment was carried out at the XG-2 laser facility,the X-ray spectrum emitted from the titanium plasmas was recorded by using the spectrometer coupled with the soft X-ray CCD camera,the experimental result shows that the spectral resolution is 1173.

关 键 词：晶体谱仪 光谱测量 X射线诊断 激光等离子体 

分 类 号：TH744.15[机械工程—光学工程]