X-ray spectral diagnosis for laser plasma

Li-feng LIU; Sha-li XIAO; Jia-yu QIAN

doi:10.3788/OPE.20172505.1192

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X-ray spectral diagnosis for laser plasma

Modern Applied Optics | 更新时间：2020-07-07

- X-ray spectral diagnosis for laser plasma
- Optics and Precision Engineering Vol. 25, Issue 5, Pages: 1192-1196(2017)
- 作者机构：
  
  1.山西大同大学物理与电子科学学院, 山西大同 037009
  2.重庆大学光电技术及系统教育部重点实验室, 重庆 400030
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20172505.1192
  CLC： O433.1;TH744
- Received：13 January 2017，
  
  Accepted：23 February 2017，
  
  Published：25 May 2017
- 稿件说明：
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Li-feng LIU, Sha-li XIAO, Jia-yu QIAN. X-ray spectral diagnosis for laser plasma[J]. Optics and precision engineering, 2017, 25(5): 1192-1196.
DOI：

Li-feng LIU, Sha-li XIAO, Jia-yu QIAN. X-ray spectral diagnosis for laser plasma[J]. Optics and precision engineering, 2017, 25(5): 1192-1196. DOI： 10.3788/OPE.20172505.1192.

摘要

为了诊断激光装置聚爆靶辐射等离子体内部的分布及运动过程，搭建了基于球面弯曲晶体的能谱成像系统。该系统的核心元件为弯曲半径为200 mm的石英球面弯曲晶体（1011），利用晶体的晶格结构进行反射，利用弯曲表面实现聚焦。在中国工程物理研究院神光Ⅲ原型激光装置上利用该能谱成像系统首次进行X射线能谱成像实验。IP成像板得到了清晰的高Z元素Au等离子体X射线能谱。能谱信息分析显示，石英球面弯曲晶体得到的能谱分辨率约为1 380，与能谱分辨模型理论值的误差为3.9%。该结果表明石英球面弯曲晶体具有很好能谱分辨能力。

Abstract

In order to diagnose the inner distribution and movement process of pellet implosion target plasma for laser-driven Inertial Confinement Fusion (ICF) facility

an energy spectrum imaging system based on spherically bent crystal was built. The core element of the system was a spherically bent quartz crystal (1011) with bending radius of 200 mm

of which the lattice structure enabled reflection and the bent surface made focus. The energy spectrum imaging system was performed to first conduct X-ray energy spectrum imaging on SG Ⅲ prototype laser equipment at the Chinese Academy of Engineering Physics (CAEP). Clear X-ray energy spectrum of the high Z element Au plasma was obtained on IP imaging plate. The analysis on the energy spectrum information shows that the energy resolution ratio gained from spherically bent quartz crystal is approximately 1 380

and the error is 3.9% compared with the theory value of energy spectrum resolution model. The result shows that spherically bent quartz crystal has good energy spectrum resolution capacity.

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references

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Related Institution

Key Laboratory of Optoelectronic Technology and System of the Ministry of Education of China, Chongqing University

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