Title :
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
fDate :
10/1/1997 12:00:00 AM
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;
Journal_Title :
Plasma Science, IEEE Transactions on
