The optical emission spectroscopy of pulsed and pulse- periodic discharges initiated with runaway electrons

12th International Conference on Gas Discharge Plasmas and Their Applications

Lomaev, M.^1,2 ; Sorokin, D.^1 ; Tarasenko, V.^1,2

Institute of High Current Electronics, Akademichesky Ave. 2/3, Tomsk

634055, Russia^1

National Research Tomsk State University, Lenina Ave. 36, Tomsk

634050, Russia^2

关键词: Electric field strength;    Molecular transitions;    Nanosecond discharge;    Nonequilibrium plasmas;    Nonuniform electric field;    Plasma parameter;    Radiation intensity;    Runaway electrons;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/652/1/012033/pdf
DOI  :  10.1088/1742-6596/652/1/012033

来源: IOP

【 摘 要 】

We report on the results of measurements of an electron Te and a gas Tg temperatures as well as a reduced electric field strength E/N in the plasma of a high-voltage nanosecond discharge initiated with runaway electrons in a gap with a strongly nonuniform electric field distribution. The foregoing plasma parameters were determined with optical emission spectroscopy techniques. The possibility of using the method for determining Te and E/N in thermodynamically nonequilibrium plasma, which is based on a determination of a ratio of a peak intensities of the ionic (λ = 391.4 nm) and molecular N2(λ = 394 nm) nitrogen bands, is proved. To measure a gas temperature the optical emission spectroscopy technique based on the measurement of a relative radiation intensity of rotation structure of electronic-vibrational molecular transitions was used, as well.