The thermal accommodation of helium and argon on a tungsten wire,deduced from the heat lost by the wire

Experimental data are presented on the heat imparted by a polycrystalline tungsten wire of preferred orientation (such that the [110] direction was approximately parallel to the wire axis) to helium and argon at pressures of order 10^?3 torr. Values of the accommodation coefficient (α) are deduced, the temperature of the gases being 300°K and that of the tungsten ranging from 1073 to 1785°K. Over this temperature range the values of α for helium and argon are 0.018 and 0.25 respectively, being virtually independent of the temperature difference between the gases and the tungsten.