用于测量激光等离子体X射线的椭圆弯晶谱仪

摘要

An elliptically bent crystal spectrometer has been designed and fabricated with an X-ray Charge Coupled Device(CCD) as the detector and a piece of PET(2d=0.874 nm) crystal elliptically bent and fixed on a stainless steel substrate with an eccentricity of 0.9586 and a focal length of 1350 mm is used as the dispersive and focusing element to measure 0.44～0.81 nm X-ray spectra emitted from laser-produced plasmas. The experimental results obtained through application experiments performed at the XG-2 target chamber demonstrate that the spectral resolution of this spectrometer approximates 1000.%研制了一种椭圆弯晶谱仪用于测量0.44～0.81 nm激光等离子体X射线光谱.该谱仪采用X射线CCD作探测器,用PET(2d＝0.874 nm)晶体作色散和聚焦元件,将晶体弯曲并粘贴在离心率和焦距分别为0.9586和1350 mm的椭圆形不锈钢基底上.对该谱仪在"星光Ⅱ"激光装置上进行了打靶实验,实验结果表明其光谱分辨率接近1000.