Abstract
THE effects of adsorbed oxygen on the properties of an initially clean tungsten surface have been investigated in detail by a wide range of experimental techniques. The changes in both the field emission microscope and the field ion microscope images of tungsten tips have been reported1,2, as have the changes in the low energy electron diffraction patterns of some oriented tungsten ribbons3,4. The adsorption and desorption phenomena which occur when tungsten at high temperatures reacts with oxygen have also been studied extensively5–7. It is generally agreed that oxygen adsorbed on tungsten can be removed by heating in vacuo but that the desorbing species is never molecular oxygen. Measurements of the adsorption kinetics using the “flash filament” technique reached the expected conclusion that this is a highly reactive gas/metal surface system8.
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GASSER, R., VAIGHT, P. Catalytic Inhibition by Adsorbed Oxygen. Nature 225, 933–936 (1970). https://doi.org/10.1038/225933a0
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DOI: https://doi.org/10.1038/225933a0
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