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

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Title
Non-destructive quantum reflection of helium dimers and trimers from a plane ruled grating
Author
Zhao, Bum SukZhang, WeiqingSchollkopf, Wieland
Issue Date
2013-07
Publisher
TAYLOR & FRANCIS LTD
Citation
MOLECULAR PHYSICS, v.111, no.12-13, pp.1772 - 1780
Abstract
We report on the 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 nanometres in front of the surface, before the dimers and trimers reach the region where the surface-induced forces would inevitably cause the 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.
URI
https://scholarworks.unist.ac.kr/handle/201301/9684
URL
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84888001830
DOI
10.1080/00268976.2013.787150
ISSN
0026-8976
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CHM_Journal Papers
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