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  Non-destructive quantum reflection of helium dimers and trimers from a plane ruled grating

Zhao, B. S., Zhang, W., & Schöllkopf, W. (2013). Non-destructive quantum reflection of helium dimers and trimers from a plane ruled grating. Molecular Physics, 111(12-13), 1772-1780. doi:10.1080/00268976.2013.787150.

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2013
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Taylor & Francis
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 Creators:
Zhao, Bum Suk1, Author
Zhang, Weiqing2, Author           
Schöllkopf, Wieland2, Author           
Affiliations:
1School of Nano-Bioscience and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST),, Ulsan 689-798, Korea, ou_persistent22              
2Molecular Physics, Fritz Haber Institute, Max Planck Society, ou_634545              

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Free keywords: quantum reflection; helium dimer; helium trimer; matter-wave diffraction; blazed diffraction grating
 Abstract: We report on non-destructive scattering and diffraction of He, He2, and He3 from a plane ruled reflection grating. At grazing incidence the normal component of the particle’s wave-vector is sufficiently small to allow for quantum reflection at the attractive Casimir-van der Waals particle–surface interaction potential. Quantum reflection occurs tens of nanometers in front of the surface, before the dimers and trimers reach the region where the surface-induced forces would inevitably cause breakup of the fragile bonds. The reflected particles are identified via their mass-dependent diffraction angles and by mass spectrometry. The intensity distributions of the observed diffraction patterns are discussed in terms of the grating’s blaze angle.

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Language(s): eng - English
 Dates: 2013-01-162013-03-052013-06-192013
 Publication Status: Issued
 Pages: 9
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1080/00268976.2013.787150
 Degree: -

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Title: Molecular Physics
Source Genre: Journal
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Publ. Info: London : Taylor & Francis
Pages: - Volume / Issue: 111 (12-13) Sequence Number: - Start / End Page: 1772 - 1780 Identifier: ISSN: 0026-8976
CoNE: https://pure.mpg.de/cone/journals/resource/954925264211