About cookies on this site Our websites require some cookies to function properly (required). In addition, other cookies may be used with your consent to analyze site usage, improve the user experience and for advertising. For more information, please review your options. By visiting our website, you agree to our processing of information as described in IBM’sprivacy statement. To provide a smooth navigation, your cookie preferences will be shared across the IBM web domains listed here.
Publication
Surface Science
Paper
The chemisorption of nitrogen at activated sites on a polycrystalline tungsten surface
Abstract
The exposure of a polycrystalline tungsten surface to atomic nitrogen or bombardment by N2+ is shown to enhance chemisorption. Ion bombardment causes the saturation coverage to be increased by about 50 % over that found after exposure to the molecular gas. A somewhat greater saturation coverage is obtained by exposure to neutral atomic nitrogen. The additional gas found in these experiments is desorbed at lower temperatures than nitrogen chemisorbed in β sites. These results are interpreted on the basis of chemisorption at endothermic adsorption sites. © 1971.