Affordable Access

Publisher Website

Oxidation of Al(111) by electron impact on adsorbed H2O

Authors
Journal
Surface Science
0039-6028
Publisher
Elsevier
Publication Date
Identifiers
DOI: 10.1016/s0039-6028(98)00306-9
Keywords
  • Amorphous Surfaces
  • Compound Formation
  • Electron Energy Loss Spectroscopy (Eels)
  • Electron Stimulated Desorption (Esd)
  • Growth
  • Low Index Single Crystal Surfaces
  • Oxidation
  • Secondary Electron Emission
  • Soft X-Ray Photoelectron Spectroscopy
  • Water

Abstract

Abstract The oxidation of aluminum by electron bombardment of a water-covered surface at 90 K has been investigated by XPS, EELS and high-resolution electron energy-loss spectroscopy. Electron bombardment converts the adsorbed ice layer into a disordered aluminum oxide film with very high efficiency. The cross-section for water conversion is 2.5×10 −16 cm 2 for an electron energy of 100 eV. The threshold energy of the electronic stimulation has been estimated to be 6±1 eV. The excitation probably proceeds via direct electron attachment, leading to dissociative production of an OH radical species, which is very effective for surface oxidation.

There are no comments yet on this publication. Be the first to share your thoughts.

Statistics

Seen <100 times
0 Comments