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

作　　者：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 Jie Zhang 

机构地区：[1]Department of Astronomy, Beijing Normal University [2]Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences [3]IFSA Collaborative Innovation Center, Shanghai Jiao Tong University [4]National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences [5]Research Center for Laser Fusion, China Academy of Engineering Physics [6]National Laboratory on High Power Laser and Physics, Chinese Academy of Sciences [7]Key Laboratory for Laser Plasmas (MoE) and Department of Physics and Astronomy, Shanghai Jiao Tong University

出　　处：《High Power Laser Science and Engineering》2018年第2期133-140,共8页高功率激光科学与工程（英文版）

基　　金：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,and11622323);the Fundamental Research Funds for the Central Universities

摘　　要：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 ?A to6.85 ?A 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-α lines, and discuss their relations with the electron temperature and density.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 A to 6.85 A 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-α lines, and discuss their relations with the electron temperature and density.

关 键 词：high energy density physics laser plasmas interaction plasmas astrophysics 

分 类 号：D4[政治法律—政治学]