Thermal diffusion in binary mixtures containing molecular gases. III. The temperature dependence of αT
Titel:
Thermal diffusion in binary mixtures containing molecular gases. III. The temperature dependence of αT
Auteur:
McCOURT, FREDERICK R. W.
Verschenen in:
Molecular physics
Paginering:
Jaargang 101 (2003) nr. 21 pagina's 3223-3229
Jaar:
2003-11-10
Inhoud:
A recent expression for the thermal diffusion factor αT for binary atom-molecule mixtures, which includes a full range of inelastic collisional contributions [McCourt, F. R. W., 2003, Molec. Phys., 101, 2181] has been utilized to calculate its temperature dependence for equimolar N2-He, Ne, Ar mixtures and for an equimolar CO2-Ar mixture. Accurate classical trajectory values for the effective cross-sections entering into the expression for αT, obtained for the most reliable potential energy surfaces available, have been employed in the calculations. Good agreement has been attained with experiment for all four binary mixtures, including the decrease of αT with increase in temperature observed for CO2-Ar mixtures, heretofore considered to be anomalous.
Tijdschrift beschrijving