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High Temperature Material Processes (An International Quarterly of High-Technology Plasma Processes)

An International Journal

ISSN for PRINT: 1093-3611

Institutional price:	$604.00
Issues per year:	4

Best Paper Award Selection - Editorial Board Site

2008, Volume12

167 pages

DOI: 10.1615/HighTempMatProc.v12.i1-2

Issue price - $362.00

TEMPERATURES IN AN ARGON-CO₂ ARC PLASMA

Nuno Cerqueira
LASEP: Laboratoire d'Analyse Spectroscopique et d'Energétique des Plasmas, UPRES-EA 3269 Faculté des Sciences, Site de Bourges, Université d'Orléans, rue Gaston Berger, BP 4043, 18028 Bourges Cedex France

Karl Kesseng
LASEP: Laboratoire d'Analyse Spectroscopique et d'Energétique des Plasmas, UPRES-EA 3269 Faculté des Sciences, Site de Bourges, Université d'Orléans, rue Gaston Berger, BP 4043, 18028 Bourges Cedex France

Charles de Izarra
LASEP: Laboratoire d'Analyse Spectroscopique et d'Energétique des Plasmas, UPRES-EA 3269 Faculté des Sciences, Site de Bourges, Université d'Orléans, rue Gaston Berger, BP 4043, 18028 Bourges Cedex France

ABSTRACT

We have used Mach-Zehnder interferometry to study the radial temperature profiles for an electric arc plasma between tungsten electrodes. The temperature profiles in atmospheric pressure arcs in argon and Ar-CO₂ mixtures have been obtained at currents of 100 mA using Mach-Zehnder interferometry. The temperature is extracted from an interferogram via the phase shifting introduced by the refractive index of the studied medium. Temperatures within 300 K−3500 K were found depending upon plasma coordinates.