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  Quantum reflection of helium atom beams from a microstructured grating.

Zhao, B. S., Schulz, S. A., Meek, S. A., Meijer, G., & Schollkopf, W. (2008). Quantum reflection of helium atom beams from a microstructured grating. Physical Review A, 78(1): 010902. doi:10.1103/PhysRevA.78.010902.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0027-D308-E Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0027-D3A9-6
Genre: Journal Article

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2172835.pdf (Publisher version), 293KB
 
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 Creators:
Zhao, B. S., Author
Schulz, S. A., Author
Meek, S. A.1, Author              
Meijer, G., Author
Schollkopf, W., Author
Affiliations:
1Research Group of Precision Infrared Spectroscopy, MPI for Biophysical Chemistry, Max Planck Society, ou_2149674              

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 Abstract: We observe high-resolution diffraction patterns of a thermal-energy helium atom beam reflected from a microstructured surface grating at grazing incidence. The grating consists of 10-mu m-wide Cr strips patterned on a quartz substrate and has a periodicity of 20 mu m. Fully resolved diffraction peaks up to the seventh order are observed at grazing angles up to 20 mrad. With changes in de Broglie wavelength or grazing angle the relative diffraction intensities show significant variations which shed light on the nature of the atom-surface interaction potential. The observations are explained in terms of quantum reflection at the long-range attractive Casimir-van der Waals potential.

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Language(s): eng - English
 Dates: 2008-07-29
 Publication Status: Published in print
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 Rev. Method: Peer
 Identifiers: DOI: 10.1103/PhysRevA.78.010902
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Title: Physical Review A
Source Genre: Journal
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Pages: 4 Volume / Issue: 78 (1) Sequence Number: 010902 Start / End Page: - Identifier: -