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Progress in Plasma Processing of Materials, 1999

ISBN:
1-56700-126-2 (Print)

DISCHARGE WITH LIQUID NONMETALLIC ELECTRODES IN AIR AT ATMOSPHERIC PRESSURE

P. Andre
Laboratoire Arc Electrique et Plasmas Thermiques CNRS FRE 3120, Phys. Bât. 5 - Université Blaise Pascal, Aubière Cedex, France; and P.R.E.S. Clermont Université, Clermont-Ferrand Cedex 1, France

Yu. Barinov
A.F. Ioffe Physical-Technical Institute, Russian Academy of Sciences, Polytechnicheskaya 26, St Petersburg, 194021, Russia

G. Faure
LAEPT, Blaise Pascal University, UMR 6069 CNRS, bat. Physique 5, 24 avenue des Landais 63177 Aubiere Cedex, France

V. Kaplan
A.F. Ioffe Physical-Technical Institute, Russian Academy of Sciences, Polytechnicheskaya 26, St Petersburg, 194021, Russia

A. Lefort
Laboratoire Arc Electrique et Plasmas Thermiques, Université Blaise Pascal, CNRS UMR 6069, 24 avenue des Landais, F63177 Aubiére Cedex, France

V. Rozdestvensky
A.F.Ioffe Phys.-Techn. Inst. Rus. Acad. Sci., Politechnicheskaya 26, St.-Petersburg 194021 - Russia

S. Shkol'nik
A.F. Ioffe Physical-Technical Institute, Russian Academy of Sciences, Polytechnicheskaya 26, St Petersburg, 194021, Russia

Abstract

A d.c. discharge which burning in open air between two flows of tap water is investigated. It appears that the discharge can be operated steady in a diffuse mode at a relatively high voltage and a low current density. Plasma parameters in the interelectrode gap are measured by means of electric probe, spectroscopic and microwave emission absorption techniques. A comparison with a theoretical calculation shows that discharge plasma is far from the thermal equilibrium and allows to determine a plasma composition. The results obtained shows that this discharge can be used for a monitoring of technical and waste water, an analysis and cleaning of waste gas flows.