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Investigation of Preionization Effects in Atmospheric Pulsed Discharge.
- Source :
- IEEE Transactions on Plasma Science; Nov2014, Vol. 42 Issue 11, p3633-3638, 6p
- Publication Year :
- 2014
-
Abstract
- Preionization for atmospheric pressure discharge plasma has been employed in several pulse gas lasers, while dielectric barrier discharge has often been utilized for ozone generators. A single ozone-generating device combining both preionization discharge and dielectric barrier discharge is investigated in this paper. The preionizing electrode configuration consisted of a wire-dielectric-plate with a 1.5-mm-thick aluminum oxide (Al2O3) barrier with relative permittivity \varepsilon \mathit {r} of about 10. Wire electrodes (0.8-mm diameter) and plate electrodes were all made of stainless steel. A barrier discharge was generated by applying a pulse voltage between the plate electrode and the wire electrodes across the dielectric, which was served as a preionizer. The main discharge was produced immediately after preionization by applying a high-voltage pulse between the wire-plate electrodes with a gap distance of 10 mm. This paper examines the temporal and spatial evolution of the discharge with and without preionization. Results from a high-speed framing camera indicate that preionization increases the volume of the main discharge, resulting in a streamer-like discharge system with preionization, which is an effective method for ozone generation. [ABSTRACT FROM PUBLISHER]
Details
- Language :
- English
- ISSN :
- 00933813
- Volume :
- 42
- Issue :
- 11
- Database :
- Complementary Index
- Journal :
- IEEE Transactions on Plasma Science
- Publication Type :
- Academic Journal
- Accession number :
- 99359688
- Full Text :
- https://doi.org/10.1109/TPS.2014.2333053