Abstract
Adsorption of methanol to the cleaved MgO(001)surface is studied using electron stimulated desorption (ESD) technique. CH2+, CO+ and CH3OH+ are identified as the desorbed ions originated to methanol. However, the yield of these ESD ions is few compared to OH+ in water adsorption for the sample just after cleavage in methanol. The yield of ESD ions from the adsorbed methanol is increased by immersion in methanol for 6 hours. By mixing water into methanol, the yield of ESD ions increases in the sample just after cleavage. From the results of electron stimulated desorption ion angular distribution (ESDIAD), it is found that the CH2+ and CO+ desorb from the step site and the CH3OH+ ions desorb from the step and terrace sites.
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