Application of a collisinal-radiative model for the analysis of K-shell line spectra emitted by Z-pinch plasma

作者：Li Jing^*; Xie Wei-Ping; Huang Xian-Bin; Yang Li-Bing; Cai Hong-Chun; Pu Yi-Kang

来源：Acta Physica Sinica, 2010, 59(11): 7922-7929.

DOI：10.7498/aps.59.7922

• Collisional-radiative model
• K-shell line spectra
• neon gas-puff Z-pinch
• Yang accelerator

In this paper, the principle of the collisional-radiative model for the estimation of plasma parameters from the ratios of K-shell spectral lines was introduced. The structure of a computer program, ZSPEC, developed for the analysis of K-shell line spectra emitted by Z-pinch plasma based on the collisioanl-radiative model was described in detail. The calculation for neon plasma were presented, including the number fractions of major ionization stages at different electron temperature and the contours of K-shell line ratios in the plane defined by electron density and electron temperature. ZSPEC had been used to analyze the measured results of neon gas-puff Z-pinch experiment performed on Yang accelerator. By comparing the K-shell line ratios of neon plasma obtained by an elliptical crystal spectrometer with the results calculated by ZSPEC, the time and space averaged electron temperature and electron density of the K-shell plasma for the shot with 540 kA peaking current were determined to be 240 eV and 1. 0 x 10(19) cm(-3) respectively.

• 出版日期2010-11
• 单位清华大学; 中国工程物理研究院; 中国工程物理研究院流体物理研究所