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Quantum and classical study of surface characterization by three-dimensional helium atom scattering
Authors:Moix Jeremy M  Pollak Eli  Allison William
Institution:Chemical Physics Department, Weizmann Institute of Science, Rehovot 76100, Israel. jmoix@mit.edu
Abstract:Exact time-dependent wavepacket calculations of helium atom scattering from model symmetric, chiral, and hexagonal surfaces are presented and compared with their classical counterparts. Analysis of the momentum distribution of the scattered wavepacket provides a convenient method to obtain the resulting energy and angle resolved scattering distributions. The classical distributions are characterized by standard rainbow scattering from corrugated surfaces. It is shown that the classical results are closely related to their quantum counterparts and capture the qualitative features appearing therein. Both the quantum and classical distributions are capable of distinguishing between the structures of the three surfaces.
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