Abstract
The influence of electron bombardment with relatively high energy electrons (500 and 1500 eV, 40 νA) on the adsorption of CO and CO 2 on a Ni(110) surface is reported. The adsorption process is monitored by Auger Electron Spectroscopy (AES) and Electron Stimulated Ion Desorption (ESID). For both gases drastic effects are observed if during exposure the surface is bombarded by electrons. Under normal exposure at room temperature only a quarter monolayer of CO is adsorbed. Due to electron bombardment during adsorption nickelcarbide is formed up to several monolayers, not reaching a saturation value in the experimental exposure range. For CO 2 which under normal exposure does not give rise to any strong features indicating chemisorption, electron bombardment induces a strong oxidation.
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