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Proceedings Paper

Research of X-ray curved crystals analyzer
Author(s): Shali Xiao; Xian-cai Xong; Jia-yu Qian; Xian-xin Zhong; Guo-hong Yan; Zhong-li Liu; Yong-kun Ding
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Paper Abstract

X-ray spectrograph has long been used as a means of diagnosing conditions of laser-produced plasmas, as information concerning both the temperature and density can be extracted from the emitted radiation. For the measurement of X-ray lines in the energy range of 0.6-6 keV, A curved crystal X-ray spectrometer of reflection type elliptical geometry is required. In order to obtain both high resolution and collection efficiency the elliptical geometry is more advantageous than the flat configurations. Elliptical curved crystals spectrograph with a relatively wide spectral range are of particular use for deducing electron temperatures by measurement of the ratios of lines associated with different charge states. Curved crystals analyzer was designed and manufactured for use on an experiment to investigate the properties of laser produced plasmas. The spectrograph has 1350mm focal length and for these measurements, utilized PET, LIF, KAP and MICA crystal bent onto an elliptical substrate. This crystal analyzer covers the Bragg angel range from 30 to 67.5. The analyzer based on elliptically geometrical principle, which has self-focusing characteristics. The experiment was carried out on Shanghai Shengguang-II Facility and aimed to investigate the characteristics of a high density plasma. Experimental results using Curved crystal analyzer are described which show spectrum of Ti, Au laser-plasma. The focusing crystal analyzer clearly gave an increase in sensitivity over a flat crystal. Spectra showing the main resonance line were recorded with X-ray CCD and with laser energies 150J laser wavelength 350nm. The calculated wavelength resolution is about 500-1000.

Paper Details

Date Published: 31 August 2005
PDF: 8 pages
Proc. SPIE 5918, Laser-Generated, Synchrotron, and Other Laboratory X-Ray and EUV Sources, Optics, and Applications II, 591805 (31 August 2005); doi: 10.1117/12.613093
Show Author Affiliations
Shali Xiao, Chongqing Univ. (China)
Xian-cai Xong, Chongqing Univ. (China)
Jia-yu Qian, Chongqing Univ. (China)
Xian-xin Zhong, Chongqing Univ. (China)
Guo-hong Yan, China Academy of Engineering Physics (China)
Zhong-li Liu, China Academy of Engineering Physics (China)
Yong-kun Ding, China Academy of Engineering Physics (China)

Published in SPIE Proceedings Vol. 5918:
Laser-Generated, Synchrotron, and Other Laboratory X-Ray and EUV Sources, Optics, and Applications II
George A. Kyrala; Jean-Claude J. Gauthier; Carolyn A. MacDonald; Ali M. Khounsary, Editor(s)

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