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An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids
Published on: December 4, 2017
Communication: Semiclassical perturbation theory for the quantum diffractive scattering of atoms on thermal surfaces
Shauli Daon1, Eli Pollak, S Miret-Artés
1Chemical Physics Department, Weizmann Institute of Science, 76100 Rehovot, Israel.
Abstract:
Inspired by the semiclassical perturbation theory of Hubbard and Miller [J. Chem. Phys. 80, 5827 (1984)], we derive explicit expressions for the angular distribution of particles scattered from thermal surfaces. At very low surface temperature, the observed experimental background scattering is proportional to the spectral density of the phonons. The angular distribution is a sum of diffraction peaks and a broad background reflecting the spectral density. The theory is applied to measured angular distributions of Ne, Ar, and Kr scattered from a Cu(111) surface.
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