Abstract
Electronically excited states (EES) affect transport properties of thermal plasmas significantly. Within the framework of the Chapman–Enskog method, higher-order contributions to electron thermal conductivity and electrical conductivity have been derived for thermal hydrogen plasmas with and without excited states and these calculations assume local thermodynamic equilibrium conditions in the temperature range from 10 000 to 30 000 K for a wide range of pressures. Small concentrations of the atomic excited states affect the higher-order contributions to the electron transport properties of the plasmas. It has been observed that the effect of EES on electrical conductivity is modest compared with that on electron thermal conductivity for which the third-order contribution shows unique behaviour, thereby emphasizing the role of e–H(n) interactions especially at high pressures.
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