title: Ultrahigh vacuum chamber for Raman studies of gases adsorbed on metals.
abstract: An ultrahigh vacuum chamber is described which is being used to study laser Raman spectra associated with gas adsorption on clean metal surfaces. The system enables sample temperatures from -85 degrees to 600 degrees C to be obtained, and besides surface cleaning capabilities associated with high-temperature oxidation or reduction, it incorporates an Ar(+) sputter gun for surface cleaning. Initial experiments of CO+H(2) adsorption on crystalline Ni surfaces are described and the effects of H(2) and O(2) exposure shown for the 80 cm(-1) band which results from CO+H(2) adsorption.
authors.affiliation: Department of Electrical Engineering, University of Kentucky, Lexington, Kentucky 40506Coastal Sciences Associates, 6900 Canal Blvd., New Orleans, Louisiana 70124.
authors.forename: J M
authors.initials: JM
authors.lastname: Stencel
authors.forename: D M
authors.initials: DM
authors.lastname: Noland
authors.forename: E B
authors.initials: EB
authors.lastname: Bradley
authors.forename: C A
authors.initials: CA
authors.lastname: Frenzel