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  Quantum Reflection of He₂ Several Nanometers Above a Grating Surface

Zhao, B. S., Meijer, G., & Schöllkopf, W. (2011). Quantum Reflection of He₂ Several Nanometers Above a Grating Surface. Science, 331(6019), 892-894. doi:10.1126/science.1200911.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-0011-2584-4 Version Permalink: https://hdl.handle.net/21.11116/0000-0005-F64A-3
Genre: Journal Article

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 Creators:
Zhao, Bum Suk1, Author           
Meijer, Gerard1, Author           
Schöllkopf, Wieland1, Author           
Affiliations:
1Molecular Physics, Fritz Haber Institute, Max Planck Society, ou_634545              

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 Abstract: Quantum reflection allows an atom or molecule to be reflected from a solid before it reaches the region where it would encounter the repulsive potential of the surface. We observed nondestructive scattering of the helium dimer (He₂), which has a binding energy of 10−7 electron volt, from a solid reflection grating. We scattered a beam containing the dimer as well as atomic helium and larger clusters, but could differentiate the dimer by its diffraction angle. Helium dimers are quantum reflected tens of nanometers above the surface, where the surface-induced forces are too weak to dissociate the fragile bond.

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Language(s): eng - English
 Dates: 2011-01-122011-02-18
 Publication Status: Issued
 Pages: 3
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1126/science.1200911
 Degree: -

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Title: Science
Source Genre: Journal
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Publ. Info: Washington, D.C. : American Association for the Advancement of Scienc
Pages: - Volume / Issue: 331 (6019) Sequence Number: - Start / End Page: 892 - 894 Identifier: ISSN: 0036-8075
CoNE: https://pure.mpg.de/cone/journals/resource/991042748276600_1