Collection Of theses on high power laser and plasma physics, 2008, 6 (1): 198, Published Online: Oct. 9, 2009
High-Resolution X-Ray Crystal Spectrometer and Its Application in Laser Plasmas
X射线光学 椭圆型晶体 诊断技术 谱分辨本领 激光等离子体 X-ray optics elliptical crystal diagnostic technology spectral resolving power laser plasma
Abstract
The elliptical bent crystal spectrometer (EBCS) is coupled to X-ray CCD, and a set of system called focusing spectrometer has been developed. Optimization calculation indicates that the EBCS will allow a large measuring spectral range (0.133～0.756 nm) with crystals of practical dimensions and for a working distance of 981.56 mm to the source and have a spectral resolving power (λ/Δλ) better than 1000 as well as high signal-noise-ratio. X-ray spectrum from the laser-produced plasma has first been measured by the EBCS in the “ShenGuang Ⅱ” Facility. Some ion-like spectral lines were identified and classified. The measured energy resolution of spectrograph was also given. Such emission of resonance line, satellite line inter-combination line of like ions, and Lyman alpha line is useful for establishing the spatial distribution of electron temperature and ions density maps.
Wang Ruirong, Chen Weimin, Dong Jiaqin, Xiong Jun, Fu Sizu. High-Resolution X-Ray Crystal Spectrometer and Its Application in Laser Plasmas[J]. Collection Of theses on high power laser and plasma physics, 2008, 6(1): 198.
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