Eur. Phys. J. D (2015) 69: 206
https://doi.org/10.1140/epjd/e2015-60303-5

Regular Article

Total pressure and atomic ratio effect on transport coefficients of HgTlI discharge plasma using a LTE chemical model

¹ High School of Sciences and Technology of Hammam Sousse (ESSTHS), 4011 street Lamine Abassi, Department of Physics, University of Sousse, Tunisia
² Research Unit of Ionized Backgrounds and Reagents Studies (UEMIR), Preparatory Institute for Engineering Studies of Monastir (IPEIM), 5019 Kairouan street, University of Monastir, Tunisia

^a e-mail: benhamidambechir@yahoo.fr

Received: 21 May 2015
Received in final form: 2 July 2015
Published online: 3 September 2015

Abstract

The aim of this paper is the study of the effect of total pressure and mercury to thallium atomic ratio on transports coefficients such as thermal conductivity, viscosity and electric conductivity of a HgTlI discharge lamp. For this, a chemical model under Local Thermodynamic Equilibrium conditions has been developed to compute the plasma composition and transports coefficients using the theoretical approach of Chapman completed by the work of Enskog, Hirschfelder and Devoto. It has been shown that the variation of the two parameters has a significant effect on the transport coefficients.