Model studies of particle/solid interactions

C. C. Chang, N. Winograd, B. J. Garrison

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

The interaction of keV particles with surfaces has traditionally been expressed in terms of successive single binary elastic collisions. In this study, molecular dynamics calculations of 100 eV to 6 keV incident particles scattering from single crystal surfaces are performed using three particle interaction models. We find that for some incident conditions, a simultaneous interaction model is needed to produce accurate trajectory simulations. This extended model takes into account the simultaneous interactions among the primary particle and all the other atoms in the system but not the ones among the substrate atoms. A fair agreement between the calculated results of this extended interaction model and that of the full dynamics model is observed for nearly the entire energy regime studied. The range of primary energies where the binary collision model is adequate in describing forward scattering processes is discussed.

Original languageEnglish (US)
Pages (from-to)309-319
Number of pages11
JournalSurface Science
Volume202
Issue number1-2
DOIs
StatePublished - Aug 1 1988

All Science Journal Classification (ASJC) codes

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

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