A spectroscopic diagnostic of the electron density in a corona discharge

23rd International Conference on Spectral Line Shapes

Rosato, J.^1 ; Bonifaci, N.^2 ; Li, Z.^2,3 ; Stamm, R.^1

Aix-Marseille Université, CNRS, PIIM UMR 7345, Marseille Cedex 20

F-13397, France^1

Laboratoire G2Elab, CNRS and Grenoble University, 25 rue des Martyrs, Grenoble

38042, France^2

Guizhou Institute of Technology, Caiguan road 1, Guiyang

550003, China^3

关键词: Corona discharges;    H-alpha;    High voltage;    Line shape;    Spectral line;    Spectroscopic diagnostics;    Stark broadenings;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/810/1/012057/pdf
DOI  :  10.1088/1742-6596/810/1/012057

来源: IOP

【 摘 要 】

Spectral lines of hydrogen observed in a corona discharge are investigated. The corona discharge has been performed at the vicinity of a tip electrode under high voltage. The shape of the H-α and H-β lines is dominated by the Stark broadening due to the plasma microfield. Using a computer simulation method, we examine the sensitivity of the line shapes to the electron density. Our results indicate the possibility of a density diagnostic based on passive spectroscopy.