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The Interaction of an Atom with a Surface: A Model Based on Effective Medium Theory

Published online by Cambridge University Press:  28 February 2011

M. Karimi and
G. Vidali
M. Karimi
Affiliation:
Physics Department, Utica College, Utica, N.Y. 13502
G. Vidali
Affiliation:
physics Department, Syracuse University, Syracuse, N.Y. 13244-1130
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Abstract

The interaction potential between an atom and a surface is constructed using the “effective medium theory” (EMT) for the repulsive part of the interaction, and the damped dipole-dipole and dipole-quadrupole Van der Waals terms for the attractive part. This model is then applied to the following systems: He/MgO, LiF, NaCl, Ag and Cu.

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