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.