Spatial and temporal distributions of ozone after a wire-to-plate streamer discharge

Author

Hegeler, Frank ; Akiyama, Hidenori

Author_Institution

Dept. of Electr. & Comput. Eng., Kumamoto Univ., Japan

Volume

25

Issue

5

fYear

1997

fDate

10/1/1997 12:00:00 AM

Firstpage

1158

Lastpage

1165

Abstract

An ultraviolet (UV) absorption technique is used to investigate the spatial and temporal distributions of ozone after a positive streamer discharge in air at atmospheric pressure. The discharge apparatus consists of a 45-cm long wire-to-plate configuration with an electrode gap distance of 2.5 cm. Results show an average ozone density of about 5×10¹⁵ cm^-3 in an area of 2 mm² just below the positive electrode after application of a voltage pulse with an amplitude of 65 kV and a duration of 80 ns. Toward the cathode, the ozone density decreases rapidly. The ozone diffusion coefficient ranges from below 0.3 to about 0.6 cm²/s, indicating a spatial and temporal distribution of the gas temperature throughout the discharge gap as well

Keywords

discharges (electric); ozone; plasma applications; water treatment; 2.5 cm; 45 cm; 65 kV; 80 ns; O₃; O₃ distributions; air; discharge apparatus; drinking water treatment; ozone; ozone density; positive streamer discharge; spatial distributions; temporal distributions; ultraviolet absorption technique; wire-to-plate streamer discharge; Apertures; Cathodes; Electrodes; Electromagnetic wave absorption; Lenses; Plasma temperature; Pulse measurements; Temperature distribution; Voltage; Wastewater treatment;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/27.649640

Filename

649640