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Measurement and analysis of K-shell lines of silicon ions in laser plasmas

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Abstract

We present laboratory measurement and theoretical analysis of silicon K-shell lines in plasmas produced by Shenguang II laser facility, and discuss the application of line ratios to diagnose the electron density and temperature of laser plasmas. Two types of shots were carried out to interpret silicon plasma spectra under two conditions, and the spectra from 6.6 ? to 6.85 ? were measured. The radiative-collisional code based on the flexible atomic code (RCF) is used to identify the lines, and it also well simulates the experimental spectra. Satellite lines, which are populated by dielectron capture and large radiative decay rate, influence the spectrum profile significantly. Because of the blending of lines, the traditional $G$ value and $R$ value are not applicable in diagnosing electron temperature and density of plasma. We take the contribution of satellite lines into the calculation of line ratios of He-$\unicode[STIX]{x1D6FC}$ lines, and discuss their relations with the electron temperature and density.

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DOI:10.1017/hpl.2018.25

基金项目:This work was supported by the Science Challenge Project (No. TZ2016005), the National Basic Research Program of China (No. 2013CBA01503), the National Natural Science Foundation of China (Nos. 10905004, 11220101002, and 11622323), and the Fundamental Research Funds for the Central Universities.

收稿日期:2017-11-29

录用日期:2018-02-23

网络出版日期:2018-03-29

作者单位    点击查看

Bo Han:Department of Astronomy, Beijing Normal University, Beijing 100875, China
Feilu Wang:Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China
Jiayong Zhong:Department of Astronomy, Beijing Normal University, Beijing 100875, ChinaIFSA Collaborative Innovation Center, Shanghai Jiao Tong University, Shanghai 200240, China
Guiyun Liang:Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China
Huigang Wei:Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China
Dawei Yuan:Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China
Baojun Zhu:National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
Fang Li:National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
Chang Liu:Department of Astronomy, Beijing Normal University, Beijing 100875, China
Yanfei Li:National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
Jiarui Zhao:National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
Zhe Zhang:National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
Chen Wang:Research Center for Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China
Jun Xiong:Research Center for Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China
Guo Jia:Research Center for Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China
Neng Hua:National Laboratory on High Power Laser and Physics, Chinese Academy of Sciences, Shanghai 201800, China
Jianqiang Zhu:National Laboratory on High Power Laser and Physics, Chinese Academy of Sciences, Shanghai 201800, China
Yutong Li:National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, ChinaIFSA Collaborative Innovation Center, Shanghai Jiao Tong University, Shanghai 200240, China
Gang Zhao:Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China
Jie Zhang:Key Laboratory for Laser Plasmas (MoE) and Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, ChinaIFSA Collaborative Innovation Center, Shanghai Jiao Tong University, Shanghai 200240, China

联系人作者:Jiayong Zhong(jyzhong@bnu.edu.cn)

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引用该论文

Bo Han, Feilu Wang, Jiayong Zhong, Guiyun Liang, Huigang Wei, Dawei Yuan, Baojun Zhu, Fang Li, Chang Liu, Yanfei Li, Jiarui Zhao, Zhe Zhang, Chen Wang, Jun Xiong, Guo Jia, Neng Hua, Jianqiang Zhu, Yutong Li, Gang Zhao, and Jie Zhang, "Measurement and analysis of K-shell lines of silicon ions in laser plasmas," High Power Laser Science and Engineering 6(2), e31 (2018)

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