Inelastic Ion-Surface Collisions. Ion Neutralization on Intermetallic Surfaces

Abstract

Ion scattering and direct recoil spectrometries were used to investigate electronic excitation and charge transfer processes occurring during rare gas ion bombardment of CuLi alloy. Excitations in the close encounter appear to be governed by the degree of inner shell mixing between the colliding pair. Excitations in the outgoing trajectory are governed by the probabilities of Auger and resonant charge exchange between the scattered or recoiled particle and the surface. Measurements of the vacuum ultraviolet photon emission of the scattered and recoiled particles proved to be unsuccessful due to low photon yields. The ion induced surface damage to transition metal fluoroanions was investigated by XPS and UPS. Ion bombardment reduces the transition metal atom to lower oxidation states, in some cases all the way to the metal. These results are consistent with the thermal spike model of ion damage. Keywords: Ion surface collisions; Emission; Scattering, Recoiling.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1988
Accession Number
ADA196322

Entities

People

  • J. W. Rabalais

Organizations

  • University of Houston

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Atoms
  • Chemical Reaction Properties
  • Chemistry
  • Classification
  • Contracts
  • Decomposition
  • Dissociation
  • Electronic States
  • Emission Spectroscopy
  • Ion Bombardment
  • Kinetic Energy
  • Scattering
  • Spacecraft
  • Spectroscopy
  • Trajectories
  • Transition Metals
  • Transitions

Fields of Study

  • Physics

Readers

  • Molecular Photonics/Laser Physics
  • Thin Film Deposition Science.

Technology Areas

  • Microelectronics