Theoretical Investigation of Transport properties of Ar-He thermal Plasma at High Pressure

Transport properties of Ar-He thermal plasma mixture has been studied in temperature range from 5000 to 30000K at high pressure in local thermodynamic equilibrium (LTE) and non-LTE conditions for different values of non-equilibrium parameter $\theta $ =T$_{e}$/T$_{h}$ . Computations of electron transport properties and their higher-order contribution has been carried out by using the Chapman-Enskog method. The effect of non-equilibrium parameter $\theta $ =T$_{e}$/T$_{h}$ and electronic excitation has been investigated for the electrical conductivity, electron thermal conductivity and electron diffusion. It has been observed that both the electronic excitation and non-equilibrium parameter $\theta $ considerably affect these properties.