Theory of the Thermal Accommodation Coefficients of a Diatomic Gas
- 1 September 1963
- journal article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 39 (5) , 1311-1316
- https://doi.org/10.1063/1.1734432
Abstract
A quantum-mechanical theory of the thermal accommodation coefficient is discussed for a diatomic gas whose molecules can possess internal energy of rotation as well as translational energy. Expressions are obtained, in terms of transition probabilities, for αt, the accommodation coefficient associated with the change in translational energy of a beam of gas molecules reflected from a solid surface, and αi, the accommodation coefficient associated with the change in internal energy of the gas molecules. The gas molecules are considered as rigid plane rotators; and, on striking the surface, a gas molecule experiences a change in rotational and translational energy, while an atom of the solid loses or gains vibrational energy. Some general conclusions are drawn concerning αt and αi and their relation to each other, and a special case is considered.Keywords
This publication has 5 references indexed in Scilit:
- Über den Einfluß des gehemmten Austauschs der Translations‐ und Schwingungsenergie auf das Wärmeleitvermögen der GaseAnnalen der Physik, 1942
- The interaction of atoms and molecules with solid surfaces VIII—The exchange of energy between a gas and a solidProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1937
- Exchange of energy between diatomic gas molecules and a solid surfaceProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1935
- A quantum mechanical theory of energy exchanges between inert gas atoms and a solid surfaceMathematical Proceedings of the Cambridge Philosophical Society, 1932
- Radiometerdruck und AkkommodationskoeffizientAnnalen der Physik, 1930