Thermal conductivity of argon in the temperature range 350 to 2500 K

The thermal conductivity of argon is determined in the temperature range 350–2500 K in a carefully designed conductivity column and is given by within an estimated uncertainty of about ±1·5 per cent. These values, which are derived from heat transfer measurements in the continuum range, are compared with conductivity values obtained from similar data taken in the temperature-jump regime. The k values are also compared with other available conductivity and viscosity data, and with the predictions based on kinetic theory in conjunction with intermolecular potentials, and the principle of corresponding states. These comparisons have led to many interesting conclusions concerning the quality of other experimental data and the appropriateness of different intermolecular potentials. The predictions based on corresponding states appear most reliable.