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Effect of Different Electron Elastic-Scattering Cross Sections on Inelastic Mean Free Paths Obtained from Elastic-Backscattering Experiments

Published

Author(s)

Aleksander Jablonski, Francesc Salvat, Cedric J. Powell

Abstract

Inelastic mean free paths (IMFPs) of electrons with energies between 100 eV and 5,000 eV have been frequently obtained from measurements of elastic-backscattering probabilities for different specimen materials. A calculation of these probabilities is also required to determine IMFPs. We report calculations of elastic-backscattering probabilities for gold at energies of 100 eV and 500 eV with differential elastic-scattering cross sections obtained from the Thomas-Fermi-Dirac potential and the more reliable Dirac-Hartree-Fock potential. For two representative experimental configurations, the average deviation between IMFPs obtained with cross sections from the two potentials was 11.4 %.
Citation
Microchimica Acta
Volume
145
Issue
No. 1-4

Keywords

elastic-backscattering probabilities, electron elastic-scattering cross sectio, electron inelastic mean free paths, gold, surface analysis

Citation

Jablonski, A. , Salvat, F. and Powell, C. (2004), Effect of Different Electron Elastic-Scattering Cross Sections on Inelastic Mean Free Paths Obtained from Elastic-Backscattering Experiments, Microchimica Acta (Accessed April 21, 2024)
Created March 31, 2004, Updated October 12, 2021