The fraction of molecules that vaporize from a surface and escape through a cylindrical hole to a condenser (escape probability) has been calculated by Monte Carlo methods for the case of hemispherical (concave and convex) and flat surfaces. The results for vaporization from the flat surface are in agreement with results predicted by the Clausing factor. The effect of condensation coefficients has also been investigated. A semiempirical equation of adjustable parameters was developed which represents the escape probabilities as a function of the length-to-radius ratio (L / R) and the condensation coefficient (α).
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.