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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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Quantum Reflection of He-2 Several Nanometers Above a Grating Surface

Cited 11 times inthomson ciCited 13 times inthomson ci
Title
Quantum Reflection of He-2 Several Nanometers Above a Grating Surface
Author
Zhao, Bum SukMeijer, GerardSchoellkopf, Wieland
Issue Date
2011-02
Publisher
AMER ASSOC ADVANCEMENT SCIENCE
Citation
SCIENCE, v.331, no.6019, pp.892 - 894
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 (He 2), 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.
URI
https://scholarworks.unist.ac.kr/handle/201301/9687
URL
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=79951816945
DOI
10.1126/science.1200911
ISSN
0036-8075
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CHM_Journal Papers
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