Attractive atom-surface interaction: Saturation effects in positronium
- 15 January 1984
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 29 (2) , 1084-1087
- https://doi.org/10.1103/physrevb.29.1084
Abstract
The attractive interaction between an atom and a surface is examined within the general framework of a self-energy formalism. Considered in detail are deviations from the van der Waals force due to recoil effects and finite velocity of the particle. Calculations for positronium moving near a metal surface show that for such systems recoil and velocity effects are significant even at very low energies.Keywords
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