Grazing incidence fast atom diffraction for He atoms impinging on a Ag(110) surface
Abstract
Experimental diffraction patterns produced by grazing scattering of fast helium atoms from a Ag(110) surface are used as a sensitive tool to test both the scattering and the potential models. To describe the elastic collision process we employ the surface eikonal (SE) approximation, which is a semi-classical method that includes the quantum interference between contributions coming from different projectile paths. The projectile-surface potential is derived from an accurate density-functional theory (DFT) calculation that takes into account the three degrees of freedom of the incident projectile. A fairly good agreement between theoretical and experimental momentum distributions is found for incidence along different low-indexed crystallographic directions.
Cite
@article{arxiv.1303.2640,
title = {Grazing incidence fast atom diffraction for He atoms impinging on a Ag(110) surface},
author = {C. A. Ríos Rubiano and G. A. Bocan and M. S. Gravielle and N. Bundaleski and H. Khemliche and P. Roncin},
journal= {arXiv preprint arXiv:1303.2640},
year = {2013}
}
Comments
14 pages, 5 figures