High Power Laser Science and Engineering, 2016, 4 (1): 010000e2, Published Online: Oct. 25, 2016  

Hard x-ray transmission curved crystal spectrometers (10–100 keV) for laser fusion experiments at the ShenGuang-III laser facility Download: 825次

Author Affiliations
1 Department of Modern Physics & CAS Key Laboratory of Geospace Environment, University of Science and Technology of China, Hefei, Anhui 230026, China
2 Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China
3 National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui 230026, China
Abstract
Two transmission curved crystal spectrometers are designed to measure the hard x-ray emission in the laser fusion experiment of Compton radiography of implosion target on ShenGuang-III laser facility in China. Cylindrically curved -quartz (10–11) crystals with curvature radii of 150 and 300 mm are used to cover spectral ranges of 10–56 and 17–100 keV, respectively. The distance between the crystal and the x-ray source can be changed over a broad distance from 200 to 1500 mm. The optical design, including the integral reflectivity of the curved crystal, the sensitivity, and the spectral resolution of the spectrometers, is discussed. We also provide mechanic design details and experimental results using a Mo anode x-ray source. High-quality spectra were obtained. We confirmed that the spectral resolution can be improved by increasing the working distance, which is the distance between the recording medium and the Rowland circle.Foundation of China under Grant Nos. 11105147, 11375197 and 11175179.

Ming-hai Yu, Guang-yue Hu, Ning An, Feng Qian, Yu-chi Wu, Xiao-ding Zhang, Yu-qiu Gu, Qiu-ping Wang, Jian Zheng. Hard x-ray transmission curved crystal spectrometers (10–100 keV) for laser fusion experiments at the ShenGuang-III laser facility[J]. High Power Laser Science and Engineering, 2016, 4(1): 010000e2.

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