Abstract
Thermal conductivities of binary gas systems are calculated on the basis of existing experimental data and of 12-6 Lennard-Jones and rigid-sphere interatomic interaction approximations for the case of gas discharge in Ne-He mixtures. Assuming that the gas temperature varies only in the radial direction and using the calculated thermal conductivities, an analytical solution of the steady-state heat conduction equation is found for uniform power input. Two cases are considered: taking or not taking into account the radiance of a ceramic tube insert. Measurement of the relative intensities of some He and Ne spectral lines, originating from different upper levels, has enabled us to determine the average electron temperature, using a line-ratio method of optical emission spectroscopy.
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