Landolt-Börnstein - Group III Condensed Matter Semi-empirical atom-surface potentials


This chapter discusses kinematics and resonant scattering, semi-empirical atom-surface potentials. The kinematic parameters of elastic scattering are provided. The intensity of the diffracted beams, including the specular, as a function of ε1 or of the incidence angles, often displays sharp features, including isolated minima (selective adsorption) and maxima. All beams are affected for the same conditions of incidence, which suggests that a resonance process is involved. At resonance, an atom is trapped in a surface-bound state for times of the order of 10-12 seconds. For a molecule, it is also possible to have resonances mediated by a rotational excitation. A general expansion of the static potential, which comes naturally for coupled channels calculations, is given.

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Title Semi-empirical atom-surface potentials
Book Title
Interaction of Charged Particles and Atoms with Surfaces
7.1.2 Elastic scattering: the atom-surface potential
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Landolt-Börnstein - Group III Condensed Matter
  • G. Chiarotti
  • Authors
  • V. Celli
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