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Progress in Plasma Processing of Materials, 1997

ISBN:
1-56700-093-2 (Print)

NO PRODUCTION IN A GLIDING ARC DISCHARGE

F. Richard
GREMI - Universite d'Orleans - BP 6759 - 45067 ORLEANS CEDEX 2

J.-M. Cormier
GREMI-ESPEO, CNRS-Universite d'Orleans, BP 6759, 45067 Orleans Cedex 2, France

Stephane Pellerin
GREMI, CNRS-Universite d'Orleans, BP 6759, 45067 Orleans Cedex 2, France LASEP, Universite d'Orleans - Antenne de Bourges, BP4043, 18028 Bourges, France

V. Dalaine
GREMI - Universite d'Orleans - BP 6759 - 45067 ORLEANS CEDEX 2

J. Chapelle
LASEP, Centre Universitaire de Bourges, Rue Gaston Berger, BP 4043, 18028 Bourges Cedex, France

Abstract

Gliding arc discharges are the subject of renewed interest in applications to a variety of chemical reactions. A gliding arc is created by a weakly ionised gas flowing between two electrodes. These devices can be used in industry mainly for decontamination and general gas treatment. A study of a DC high voltage arc is described on this paper and a theoretical and experimental determination of NO production are given. A comparison between calculated and experimental results show a good agreement. NO is produced by a thermal sweeping effect as a result of a difference between gas flow velocity and arc velocity. The arc is described with a plasma channel model in which the plasma column have a small conductive radius.