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Dissociative adsorption of hyperthermal O 2 molecules on Cu 3 Au(100) was investigated by X-ray photoemission spectroscopy in conjunction with a synchrotron light source. Comparing the O-uptake curve on Cu 3 Au to that on Cu, it was determined that the dissociative adsorption of O 2 implies a higher activation barrier and therefore less reactivity due to the Au alloying...
The oxidation processes of Cu{111} with thermal and hyperthermal O 2 were studied using high-resolution X-ray photoemission spectroscopy (XPS) in conjunction with a synchrotron radiation (SR) source. We measured O-uptake curves for thermal O 2 exposure and hyperthermal O 2 molecular beam (HOMB) irradiation on a Cu{111} surface at ~300 K. Under an O coverage (Θ) =<0.4 ML,...
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