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

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2 Author(s)
Hegeler, F. ; Dept. of Electr. & Comput. Eng., Kumamoto Univ., Japan ; Akiyama, H.

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

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Plasma Science, IEEE Transactions on  (Volume:25 ,  Issue: 5 )