A High-Efficiency X-Ray Crystal Spectrometer for X-Ray Thomson Scattering

ZHANG Xiaoding (张小丁); ZHANG Jiyan (张继彦); YANG Guohong (杨国洪); et al.

doi:10.1088/1009-0630/15/8/07

Plasma Science and Technology > 2013 > 15(8): 755-759. > DOI: 10.1088/1009-0630/15/8/07

ZHANG Xiaoding (张小丁), ZHANG Jiyan (张继彦), YANG Guohong (杨国洪), et al.. A High-Efficiency X-Ray Crystal Spectrometer for X-Ray Thomson Scattering[J]. Plasma Science and Technology, 2013, 15(8): 755-759. DOI: 10.1088/1009-0630/15/8/07

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A High-Efficiency X-Ray Crystal Spectrometer for X-Ray Thomson Scattering

1 CAS Key Laboratory of Basic Plasma Physics and Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China 2 Laser Fusion Research Center, Chinese Academy of Engineering Physics, Mianyang 621900, China

Funds: supported by National Natural Science Foundation of China (Nos.11175197), CAS Innovative Project of China (KJCX2-YW-N36), and Ministry of Education of China (IRT1190)

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Received Date: April 23, 2012

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Abstract

Abstract

Highly oriented pyrolitic graphite (HOPG) has high X-ray diffraction efficiency due to its unique mosaic crystal structure, and thus is very suitable for its application to X-ray Thom- son scattering measurement of solid-density plasmas. In this article, by using the K-shell X-ray source from laser-produced Ti plasma, the properties of the HOPG spectrometer are characterized and compared with those of the flat Pentaerythritol (PET) spectrometer. The results show that the diffraction efficiency of the HOPG spectrometer under focusing condition is an order higher than that of the PET spectrometer, while the spectral resolution of the HOPG is about 320, high enough to be used in the measurement of X-ray Thomson scattering spectra.
- crystal spectrometer,
- highly oriented pyrolytic graphite,
- X-ray Thomson scat- tering

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