Abstract.
In this study, spatially resolved measurements of the emission intensity of OH (A2Σ↦X2Π, 0-0) and the vibrational temperature of N2 (C) have been performed during a positive pulsed streamer discharge with a wire-plate electrode configuration at atmospheric pressure. The effects of pulse peak voltage, pulse repetition rate and the added O2 flow rate on the spatial distributions of the emission intensity of OH (A2Σ↦X2Π, 0-0) and the vibrational temperatures of N2 (C) perpendicular to the wire in the direction towards the plate (in the radial direction) are investigated. It has been found that the emission intensity of OH (A2Σ↦X2Π, 0-0) increases with increasing pulse peak voltage and pulse repetition rate and decreases with increasing the distance from the wire electrode. When the different oxygen flows are added in N2 and H2O mixture gas, the emission intensity of OH (A2Σ↦X2Π, 0-0) decreases with increasing the flow rate of oxygen. The vibrational temperature of N2 (C) is nearly independent of pulsed peak voltage and pulsed repetition rate, but increases with increasing the added O2 flow rate and keeps almost constant in the radial direction under the present experimental conditions. This measurement plays a crucial role in understanding the discharge characters of pulsed streamer discharge and establishing the molecule reaction dynamics model of pulsed streamer discharge.
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Liu, F., Wang, W., Zheng, W. et al. Measurement of OH spatially resolved spectrum in a wire-plate pulsed streamer discharge. Eur. Phys. J. D 42, 435–440 (2007). https://doi.org/10.1140/epjd/e2007-00051-7
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DOI: https://doi.org/10.1140/epjd/e2007-00051-7