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Ion Backscattering from Solid Surfaces

  • R. Behrisch
  • W. Eckstein

Abstract

When energetic hydrogen and helium particles impinge on the solid walls in high temperature plasma experiments, a fraction of them is immediately backscattered retaining a major part of their kinetic energy and they are thus recycled into the plasma. The particles which are not backscattered are implanted into the walls and are lost from the plasma. These hydrogen atoms are reemitted into the plasma at a later time mostly as thermal molecules. Measured data on particle and energy backscattering are still limited, they have been investigated only for primary energies above 100 eV. The results can be reasonably described with the computer simulation codes using the binary collision approximation. These codes have been used to calculate backscattering data down to the 1 eV energy range.

Keywords

Angular Distribution Reflection Coefficient Incident Energy Surface Binding Energy Backscatter Particle 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Plenum Press, New York 1986

Authors and Affiliations

  • R. Behrisch
    • 1
  • W. Eckstein
    • 1
  1. 1.Max-Planck-Institut für PlasmaphysikEURATOM AssociationGermany

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