Ozone Formation in a Coaxial DC Corona Discharge under Carbon Dioxide Gas Flow

Orszagh, Juraj; Skalny, Ján D and Mason, Nigel J. (2007). Ozone Formation in a Coaxial DC Corona Discharge under Carbon Dioxide Gas Flow. Plasma Processes and Polymers, 4(7-8) pp. 694–700.

DOI: https://doi.org/10.1002/ppap.200700023

Abstract

Ozone formation has been monitored in DC corona discharges fed by pure carbon dioxide in a flowing regime. Ozone concentrations have been measured for both positive and negative polarities of the discharge. Several different electrical parameters of the discharge have been measured. The onset voltage in the positive corona is approximately 1 kV higher than in a similar negative discharge, however, the maximum ozone concentration and total discharge current were found to be higher in the negative corona discharge. The gas flow rate is shown to influence the CV characteristics within a negative corona but, in contrast, only a marginal effect of flow rate was observed in positive corona. The mobility of both negative and positive charge carriers in the drift region of the discharges have been derived from CV characteristics.

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