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Proceedings Paper

Application of LIF techniques to atmospheric pressure nonthermal plasma
Author(s): Tetsuji Oda; Ryo Ono
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Paper Abstract

As a diagnosis tool of the atmospheric pressure non-thermal plasma, some Laser-Induced Fluorescence (LIF) techniques are described. The observed radicals are OH and NO in the plasma region generated by the electric pulse discharge or DC corona. Time variations of 2 dimensional distribution of OH or NO were observed just after the pulse excitation. Precise OH or NO concentration changes with time were also recorded related with some contamination and other parameters. Ground-state OH density is maximum at 30 or 50 microseconds after the submicrosecond pulse discharge in arc mode but the OH density is largest just after the pulse discharge if the plasma is the non-thermal plasma. NO decomposition occurs just in the streamer, and decomposing area increases from that streamer area with time, if NO concentration is low.

Paper Details

Date Published: 19 March 2002
PDF: 11 pages
Proc. SPIE 4460, Selected Research Papers on Spectroscopy of Nonequilibrium Plasma at Elevated Pressures, (19 March 2002); doi: 10.1117/12.459404
Show Author Affiliations
Tetsuji Oda, Univ. of Tokyo (Japan)
Ryo Ono, Univ. of Tokyo (Japan)

Published in SPIE Proceedings Vol. 4460:
Selected Research Papers on Spectroscopy of Nonequilibrium Plasma at Elevated Pressures
Vladimir N. Ochkin, Editor(s)

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