A Classical Model For Gas Surface Interaction

Download or read book A Classical Model for Gas-surface Interaction written by M. R. Busby and published by . This book was released on 1970 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: A classical theoretical model for gas-surface interaction has been formulated and tested using the experimental data for the gaseous-argon, solid-argon system. The theoretical interaction is modeled as the collision of hard spheres with the inclusion of surface temperature and an attractive surface field energy which is the only adjustable parameter in the formulation. The theoretical results from this exceedingly simple model exhibit nearly every characteristic of the available experimental data for argon. Several general conclusions about the actual argon-argon interaction were made. First, classical mechanics appeared to provide a useful description for the interaction. Second, a hard sphere model was adequate to predict the gas-solid collision properties over the range of experimental conditions although the theoretical spatial distributions are narrower than those experimentally measured. Third, in order to match the experimental capture coefficient data, the magnitude of the surface field energy was nearer the heat of sublimation rather than the Lennard-Jones or Morse potential well-depth values. (Author).