Numéro
J. Phys. Colloques
Volume 40, Numéro C7, Juillet 1979
XIVe Conférence Internationale sur les Phénomènes d'Ionisation dans les Gaz / XIVth International Conference on Phenomena in Ionized Gases
Page(s) C7-237 - C7-238
DOI https://doi.org/10.1051/jphyscol:19797116
XIVe Conférence Internationale sur les Phénomènes d'Ionisation dans les Gaz / XIVth International Conference on Phenomena in Ionized Gases

J. Phys. Colloques 40 (1979) C7-237-C7-238

DOI: 10.1051/jphyscol:19797116

DIFFERENCE BETWEEN ELECTRON TEMPERATURE AND HEAVY PARTICLES TEMPERATURE IN ARC PLASMA

H. Kafrouni, A. Gleizes et H. Dang Duc

Centre de Physique Atomique, Laboratoire Associé au C.N.R.S. n° 277, Université Paul Sabatier, 118, route de Narbonne, 31077 Toulouse France.


Abstract
Over several years various authors /1 - 2/ have reported that the confined-arc plasma can show large deviations from Local Thermodynamic Equilibrium (LTE). These discrepancies appear under various forms : deviations from complete LTE if the pressure is considered constant, deviations from Saha's law for certain atomic levels, difference between the electron temperature (Te) and that of heavy particles (Th). In this paper the latter question (Te-Th) will be theoretically and experimentally investigated for a plasma produced by a wall-stabilized arc burning in argon at atmospheric pressure and current intensities of between 6 and 35 A.