Probability of gas adsorption on metal films. Part 2.—Nitrogen on tungsten
- 1 January 1967
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Transactions of the Faraday Society
- Vol. 63, 1418-1426
- https://doi.org/10.1039/tf9676301418
Abstract
The factors relevant to the design of a flow-system for determining the sticking probabilities of gases on film surfaces are discussed critically. The sticking probability of nitrogen on tungsten films is 0.64 at 298°K and 0.94 at 77° and 130°K. These values, which are higher than those observed with tungsten ribbons, are in quantitative agreement with calculations based on a model for film surfaces suggested by Takaishi. The variation of the number of molecules adsorbed as a function of film weight has been analyzed in terms of equations based on a model for film growth and data determined previously with nickel films.Keywords
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