Slowing Down of Positrons and Applications to Solid Surfaces

Authors

Peter J. Schultz, The University of Western Ontario
L. R. Logan, The University of Western Ontario
W. N. Lennard, The University of Western Ontario
G. R. Massoumi, The University of Western Ontario

Abstract

When monoenergetic positrons enter a solid they scatter and lose energy via processes similar to those for electrons. Theoretical details of these processes have been well established for decades, but experimental results using low energy positron beams are only now becoming available for comparison. We review the theoretical results for elastic and inelastic scattering of positrons and the predictions that follow for backscattering, inner-shell ionization, energy loss and stopping profiles. In this presentation, emphasis is given to specific comparisons with calculations for electrons. We discuss recent experimental results in each of these areas, and conclude with two examples of applications of positron beam techniques to near-surface research.

Recommended Citation

Schultz, Peter J.; Logan, L. R.; Lennard, W. N.; and Massoumi, G. R. (1990) "Slowing Down of Positrons and Applications to Solid Surfaces," Scanning Microscopy: Vol. 1990: No. 4, Article 16.
Available at: https://digitalcommons.usu.edu/microscopy/vol1990/iss4/16