Influence of Microwave Electric Field on Spatial and Time-Variation of H Spectra in Pulsed-Microwave Atmospheric Pressure Plasma
نویسندگان
چکیده
Atmospheric pressure plasma produced by a slot antenna with a pulsed microwave excitation was investigated to understand an electric field influence on hydrogen Balmer- (H) spectral profile using spaceand time-resolved optical emission spectroscopy. Paralleland perpendicular-polarized H emission line profiles with respect to the microwave electric field direction were measured by a polarization spectroscopy technique. Clear differences of H spectral profiles were observed at the early stage of plasma ignition, especially in the vicinity of the slot antenna, revealing the influence of the microwave electric field on H line profiles.
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