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Extreme ultraviolet spectrometer for the Shenguang III laser facility

机译：神光III激光设备的极紫外光谱仪

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An extreme ultraviolet spectrometer has been developed for high-energy density physics experiments at the Shenguang-III (SG-III) laser facility. Alternative use of two different varied-line-spacing gratings covers a wavelength range of 10-260 angstrom. A newly developed x-ray framing camera with single wide strip line is designed to record time-gated spectra with similar to 70 ps temporal resolution and 20 lp/mm spatial resolution. The width of the strip line is up to 20 mm, enhancing the capability of the spatial resolving measurements. All components of the x-ray framing camera are roomed in an aluminum air box. The whole spectrometer is mounted on a diagnostic instrument manipulator at the SG-III laser facility for the first time. A new alignment method for the spectrometer based on the superimposition of two laser focal spots is developed. The approaches of the alignment including offline and online two steps are described. A carbon spectrum and an aluminum spectrum have been successfully recorded by the spectrometer using 2400 l/mm and 1200 l/mm gratings, respectively. The experimental spectral lines show that the spectral resolution of the spectrometer is about 0.2 angstrom and angstrom 1 angstrom for the 2400 l/mm and 1200 l/mm gratings, respectively. A theoretical calculation was carried out to estimate the maximum resolving power of the spectrometer. (C) 2015 Optical Society of America
机译：已经开发了一种极端紫外光谱仪，用于在神光III号（SG-III）激光设备上进行的高能量密度物理实验。两种不同的行距间隔光栅的替代使用覆盖10-260埃的波长范围。一种新开发的具有单条带状线的X射线成帧相机旨在记录时间选通的光谱，其时间分辨率类似于70 ps，空间分辨率为20 lp / mm。带状线的宽度最大为20 mm，从而增强了空间分辨测量的能力。 X射线取景器的所有组件都放在一个铝制航空箱中。整个光谱仪首次安装在SG-III激光设备的诊断仪器操纵器上。提出了一种基于两个激光焦斑叠加的光谱仪对准方法。描述了包括离线和在线两个步骤的对准方法。光谱仪分别使用2400 l / mm和1200 l / mm的光栅成功记录了碳光谱和铝光谱。实验光谱线表明，对于2400 l / mm和1200 l / mm光栅，光谱仪的光谱分辨率分别约为0.2埃和1埃。进行了理论计算以估计光谱仪的最大分辨能力。 （C）2015年美国眼镜学会

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