Affordable Access

Publisher Website

Elastic photoelectron-scattering effects in quantitative X-ray photoelectron spectroscopy

Authors
Journal
Surface Science
0039-6028
Publisher
Elsevier
Volume
606
Identifiers
DOI: 10.1016/j.susc.2011.12.003
Keywords
  • Computer Simulations
  • Electron-Solid Scattering And Transmission – Elastic
  • Photoelectron Emission

Abstract

Abstract We present improved formulae for the correction parameters Qx and βeff that are used to account for elastic scattering of photoelectrons in quantitative X-ray photoelectron spectroscopy (XPS). The new formulae are based on new Monte Carlo simulations for 584 photoelectrons in 39 elemental solids that could be excited by Mg Kα and Al Kα X-rays in 315 different XPS configurations. The new simulations differed from similar earlier calculations in that differential elastic-scattering cross sections calculated from the Dirac–Hartree–Fock potential were utilized rather than those from the Thomas–Fermi–Dirac potential, a smaller analyzer acceptance angle was chosen, and the number of trajectories in each simulation was an order of magnitude larger. New values of Qx and βeff were obtained for each photoelectron line, each X-ray source, and each XPS configuration. These Qx and βeff values could be fitted to simple two-parameter expressions, each a function of the single-scattering albedo and the photoelectron emission angle. Values of Qx from the new predictive formula differed from the previous expression by less than 1%. Larger deviations in the values of βeff, up to 2.5%, were found from the new fit to the βeff parameter. The new expressions for Qx and βeff provide a convenient means for correction of elastic-scattering effects in XPS.

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

Statistics

Seen <100 times
0 Comments

More articles like this

Towards a universal description of elastic scatter...

on Journal of Electron Spectrosco... Jan 01, 1995

Effects of elastic-electron scattering on measurem...

on Journal of Electron Spectrosco... Jan 01, 2001

The effect of elastic photoelectron scattering on...

on Journal of Electron Spectrosco... Jan 01, 1991
More articles like this..