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Zhao, Bum Suk
Atom and Molecule Optics Lab (AMOL)
Research Interests
  • Standing wave, quantum state, optical force, grazing inceidence, atom optics, matter wave

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Coherent Reflection of He Atom Beams from Rough Surfaces at Grazing Incidence

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Title
Coherent Reflection of He Atom Beams from Rough Surfaces at Grazing Incidence
Author
Zhao, Bum SukSchewe, H. ChristianMeijer, GerardSchoellkopf, Wieland
Issue Date
2010-09
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW LETTERS, v.105, no.13
Abstract
We report coherent reflection of thermal He atom beams from various microscopically rough surfaces at grazing incidence. For a sufficiently small normal component kz of the incident wave vector of the atom the reflection probability is found to be a function of kz only. This behavior is explained by quantum reflection at the attractive branch of the Casimir-van der Waals interaction potential. For larger values of kz the overall reflection probability decreases rapidly and is found to also depend on the parallel component kx of the wave vector. The material specific kx dependence for this classic reflection at the repulsive branch of the potential is discussed in terms of an averaging out of the surface roughness under grazing incidence conditions.
URI
https://scholarworks.unist.ac.kr/handle/201301/9688
URL
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=77957201107
DOI
10.1103/PhysRevLett.105.133203
ISSN
0031-9007
Appears in Collections:
CHM_Journal Papers
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