Initial adsorption kinetics of oxygen on polycrystalline copper

M. H. Mintz, U. Atzmony, N. Shamir

Research output: Contribution to journalArticlepeer-review

20 Scopus citations


The initial adsorption kinetics of oxygen on a sputter-cleaned surface of polycrystalline copper was studied at room-temperature utilizing combined measurements with Auger electron spectroscopy (AES) and time-of-flight spectrometry of direct recoils (TOF-DR). These combined measurements enable one to distinguish between adsorption processes occurring simultaneously on different structural arrays present on the polycrystalline surface. Modeling the surface as composed of two types of arrays, i.e. "rough" (e.g. ridged planes, defects and irradiation damaged areas) and "smooth", it is possible to obtain quantitative kinetic data regarding adsorption on these local arrays. The "rough" arrays on polycrystalline copper display kinetic behavior similar to the ridged (110) plane of copper single-crystal. The "smooth" arrays on the other hand display initial sticking probabilities higher than obtained for single-crystals. This difference has been accounted for by an "equilibrium spillover" model assuming surface migration of adsorbed oxygen from the "rough" to the "smooth" arrays.

Original languageEnglish
Pages (from-to)413-430
Number of pages18
JournalSurface Science
Issue number3
StatePublished - 1 Jul 1987
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry


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