The Interaction Of Monatomic And Diatomic Molecules With Solid Surfaces

Download or read book Interaction of Monatomic and Diatomic Molecules with Solid Surfaces written by Leon Trilling and published by . This book was released on 1975 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: A research program into phenomena related to gas-surface interaction was conducted over the last several years with the broad objective of answering the following general question: Given a stream of gas molecules of known properties approaching a specified surface, how does one predict the velocity and flux distributions of the streams which leave the surface. Beginning with very simple configurations, account has been taken of an increasingly detailed extended set of properties of the solid surface, of the gas stream and of the interaction process. The basic problem was formulated with a view to understanding molecular transport phenomena, first on inert metallic surfaces such as the skins of satellite vehicles in orbital flight, and later on ice crystals and nucleating centers in Brownian motion in the upper atmosphere. The experimental work during the present contract period included the development of a new scheme for measuring molecular velocity distribution using velocity spectrometry of electron beam excited metastable species. In the theoretical part of this research, a classical continuum model of the surface was constructed which successfully allows for a number of physical effects that are not predicted by lattice models.