Selective adsorption

Selective adsorption is the effect when minima associated with bound-state resonances occur in specular intensity in atom-surface scattering.

Discovery

Pronounced intensity minima were first observed in 1930 by Estermann, Frisch, and Stern, during a series of gas-surface interaction experiments attempting to demonstrate the wave nature of atoms and molecules. The phenomenon has been explained in 1936 by Lennard-Jones and Devonshire in terms of resonant transitions to bound surface states.

Significance

The selective adsorption binding energies can supply information on the gas-surface interaction potentials by yielding the vibrational energy spectrum of the gas atom bound to the surface. Starting from the 1970s, it has been extensively studied, both theoretically and experimentally. Energy levels measured with this technique are available for many systems.

References

Hulpke, E. (1992). Helium Atom Scattering from Surfaces. p. 168. ISBN 9783662027745.
Torres, Zuleika Medina (2008). "Selective adsorbtion". Theoretical Studies of Gas-surface interactions. pp. 7–8.

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