Interaction of low energy electrons with platinum surface

D. Borka, K. Tokési

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

We present Monte Carlo simulation of low energy electrons backscattered from platinum (Pt) surface. We take into account both elastic and inelastic collisions during the simulation. For the case of the elastic scattering of electrons by Pt atoms we use the static field approximation with non-relativistic Schrödinger partial wave analysis. For the case of inelastic scattering we use the dielectric response formalism. In our simulations the primary electron energy is 250 eV and the incidence angle of the electron beam with respect to the surface is varied between 1° and 90°. The backscattered electron energy loss distributions for primary and as well for secondary electrons and the distribution of maximum electron penetration depths in the Pt sample were calculated using only the bulk and also the surface dielectric function. We found that the maximum attained depth of the electrons is around 20 Å, i.e. the electrons are at the vicinity of the surface. Therefore we expect that the experimental data will be close to our simulation using surface-excitations modes.

Original languageEnglish
Pages (from-to)112-115
Number of pages4
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume354
DOIs
Publication statusPublished - Jul 1 2015

Keywords

  • Electron scattering from surfaces
  • Energy loss
  • Metallic surfaces

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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