Spectral diagnostics of gliding high-pressure glow discharges

The paper deals with the determination of vibrational and rotational temperatures, and with the tentative determination of electron temperature, in various of parts of the gliding discharge by using optical spectroscopy methods. The gliding discharges were excited under atmospheric and increased pressures at various rates of air flow in horn-shaped Cu electrodes. The spectral analysis of individual parts of the discharge under various physical conditions was performed by means of the optical spectrograph ISP21 covering the spectral range of 600-250 nm. At the determination of temperatures rather universal methods were used, suitable for a large variety of electric discharges. These methods are described in detail in the theoretical part of the paper. (J.U.)