高分辨椭圆弯晶谱仪在激光等离子体实验中的应用
Application of high-resolution elliptical crystal X-ray spectrometer to laser-produced plasma experiment
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摘要: 描述了用于激光等离子体X射线光谱研究的椭圆弯曲晶体谱仪系统。在“神光Ⅱ”第九路激光上对该谱仪进行标定实验，利用CCD相机成功地获得了激光等离子体铝和钛离子的K壳层和金离子M壳层谱；通过研究和辨认谱线，得到了X射线光谱，同时还给出了实验测定的谱仪分辨率。椭圆弯曲晶体谱仪除有高的收集光子效率外，还有更好的谱分辨和空间分辨率。分析了椭圆弯曲晶体谱仪在前沿科学技术和高技术实验中的应用。Abstract: This paper describes the elliptical crystal spectrograph(ECS) which is used to investigate X-ray spectroscopy of laser-produced plasmas. The spectrometer was calibrated for experiments on “Shenguang Ⅱ” X laser target chamber. The K-shell and M-shell emission lines of laser-produced plasma were measured by the space-resolved spectrometer. Some X-ray spectral lines were obtained through studying and classifying photographs of spectra recorded by X-ray CCD camera. The measured spectral resolution of spectrograph was given. The focusing spectrometer based on the ECS provides high spectral resolution and spatial resolution as well as high luminosity(high collection efficiency). Possible applications of the ECS are demonstrated.
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