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New Universal Expression for the Electron Stopping Power for Energies Between 200 eV and 30 keV

Published

Author(s)

Aleksander Jablonski, S Tanuma, Cedric J. Powell

Abstract

We report the development of a new analytical expression for the electron stopping power (SP) for electron energies between 200 eV and 30 keV. This expression describes the product of the SP and the inelastic mean free path (IMFP), and is a simple function of atomic number and electron energy. Parameters in the expression were obtained from fits to SPs and IMFPs calculated from optical data for a group of 27 elemental solids. The mean deviation of 10.4 % in these fits was less than the mean deviations found in similar fits with the empirical modifications of the Bethe SP equation by Joy and Luo and by Fernandez-Varea et al. The new expression is considered suitable for Monte Carlo simulations of electron transport with the continuous slowing-down approximation relevant to Auger-electron spectroscopy, X-ray photoelectron spectroscopy, and electron-probe microanalysis.
Citation
Surface and Interface Analysis
Volume
38

Keywords

Auger electron spectroscopy, continuous slowing-down approximation, electron transport, electron-probe microanalysis, Monte Carlo simulations, stopping power, X-Ray photoelectron spectroscopy

Citation

Jablonski, A. , Tanuma, S. and Powell, C. (2005), New Universal Expression for the Electron Stopping Power for Energies Between 200 eV and 30 keV, Surface and Interface Analysis (Accessed April 21, 2024)
Created October 31, 2005, Updated October 12, 2021