Modified Double-crystal Diagnosis for X-ray Polarid Spectrum of Laser-produced Plasma

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Modified Double-crystal Diagnosis for X-ray Polarid Spectrum of Laser-produced Plasma

Modern applied optics | 更新时间：2020-08-12

- Modified Double-crystal Diagnosis for X-ray Polarid Spectrum of Laser-produced Plasma
- Optics and Precision Engineering Vol. 19, Issue 12, (2011)
- 作者机构：
  
  重庆工商大学2. 重庆大学
- 作者简介：
- 基金信息：
- DOI：
  CLC： O72;TH744.15
- Received：19 April 2011，
  
  Revised：03 July 2011，
  
  Published Online：06 December 2011，
  
  Published：26 December 2011
- 稿件说明：
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王洪建,肖沙里,施军. 修正双晶技术诊断激光等离子体X射线极化度[J]. 光学精密工程, 2011, 19(12): 0-0.

YU Hong-Jian,XIAO Sha-Li,YI Jun. Modified Double-crystal Diagnosis for X-ray Polarid Spectrum of Laser-produced Plasma[J]. Editorial Office of Optics and Precision Engineering, 2011, 19(12): 0-0.
王洪建,肖沙里,施军. 修正双晶技术诊断激光等离子体X射线极化度[J]. 光学精密工程, 2011, 19(12): 0-0. DOI：

YU Hong-Jian,XIAO Sha-Li,YI Jun. Modified Double-crystal Diagnosis for X-ray Polarid Spectrum of Laser-produced Plasma[J]. Editorial Office of Optics and Precision Engineering, 2011, 19(12): 0-0. DOI：

摘要

为了诊断波长为0.2～20nm的激光等离子体X射线的极化度，推断该等离子体内部的各向异性状态，研制了结构新颖的激光等离子体极化光谱仪。该谱仪在电子束垂直入射面内正交布置色散元件均为PET晶体，两通道均用成像板接收光谱信号，其有效面积为30mm×80mm，从光源经晶体到成像板的光程分别为980mm和310mm。在中国工程物理研究院激光聚变研究中心20焦耳激光器上率先进行固体靶实验，获得Al离子类氦谱线，经过对类氦共振线和互组合线校正，推算出两谱线的极化度分别为0.1233和0.1481。结果表明激光等离子体内部存在弱各向异性，该谱仪能够满足激光等离子体极化光谱诊断要求。

Abstract

To diagnose X-ray polarization of laser-produced plasma in a wavelength of 0.2 ~ 20 nm

a novel polarized spectroscopy is designed and manufactured based on spatial resolution in laser-produced plasma experiments. The experiment was carried out at the 20J laser facility of Research Center of Laser Fusion

China Academy of Engineering Physics (CAEP). In the experiment

PET crystals are used as dispersive elements in the two orthogonal directions. The imaging plates

the effective area of 30 mm×80 mm

are taken as detectors. And the long optical paths of the X-ray beam are about 980 mm and 310mm from the source to the detectors via the PET crystals

respectively. The X-ray spectrum emitted from the aluminum plasmas was recorded by the image plates. It is calculated that the polarization were respective about 0.1233 and 0.1481 of the two Al Ⅻ spectrum by correcting helium resonance and combination spectrum. The experimental results demonstrate that there is anisotropic phenomenon in laser-produced plasma. This is an effective technique to diagnose the polarid spectrum of high-temperature plasma.

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Related Author

WANG Hong-jian

XIAO Sha-li

SHI Jun

王洪建

XUE Ling-ling

CHEN Bo

NI Qi-liang

ZHANG Hua

Related Institution

Chongqing Engineering Technology Research Center for Information Management in Development, Chongqing Technology and Business University

Key Laboratory of Opto-electronic Technology and System, Ministry of Education, Chongqing University

National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, China Academy of Engineering Physics

重庆大学

institute of Science,Changchun University of Science and Technology, Changchun

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