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The formation of subsurface oxygen on Pt{110} (1×2) from molecular-beam-generated O2 1Deltag

J. Chem. Phys. 112, 8631 (2000); doi:10.1063/1.481463

Issue Date: 15 May 2000

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A. V. Walker, B. Klötzer, and D. A. King
Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
An unusually high-peak-temperature desorption state of O2 from Pt{110} (1×2) has been characterized in temperature programmed desorption spectra after O2 adsorption from a supersonic beam at a translational energy of 190 meV and at nozzle temperatures, Tn, greater than 870 K. It shows the characteristics of a subsurface atomic state of oxygen. From the nozzle temperature dependence of the rate of population of this state we conclude that it is formed exclusively from electronically excited O2 1Deltag generated in the molecular beam source. ©2000 American Institute of Physics.
History: Received 20 December 1999; accepted 18 February 2000
Permalink: http://link.aip.org/link/?JCPSA6/112/8631/1
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KEYWORDS and PACS

Keywords
PACS
  • 79.20.Rf
    Electron and ion emission by liquids and solids; impact phenomena Impact phenomena (including electron spectra and sputtering) Atomic, molecular, and ion beam impact and interactions with surfaces
  • 68.45.Da
    Surfaces and interfaces; thin films and whiskers (structure and nonelectronic properties) Solid–fluid interfaces Adsorption and desorption kinetics; evaporation and condensation
  • 68.10.Jy
    Surfaces and interfaces; thin films and whiskers (structure and nonelectronic properties) Fluid surfaces and fluid–fluid interfaces Kinetics (evaporation, adsorption, condensation, catalysis, etc.)
  • 71.10.Li
    Electronic structure Theories and models of many electron systems Excited states and pairing interactions in model systems
  • YEAR: 2000

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PUBLICATION DATA

ISSN:
0021-9606 (print)   1089-7690 (online)
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