Emerging beam effects in out-of-plane grating diffraction of He atom beams

Zhao, Bum Suk; Meijer, Gerard; Schöllkopf, Wieland

doi:10.1088/1367-2630/13/6/065017

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Emerging beam effects in out-of-plane grating diffraction of He atom beams

MPS-Authors

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Zhao, Bum Suk
Molecular Physics, Fritz Haber Institute, Max Planck Society;

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Meijer, Gerard
Molecular Physics, Fritz Haber Institute, Max Planck Society;

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Schöllkopf, Wieland
Molecular Physics, Fritz Haber Institute, Max Planck Society;

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1367-2630_13_6_065017.pdf
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FinalVersion_Autorenfile.pdf
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引用

Zhao, B. S., Meijer, G., & Schöllkopf, W. (2011). Emerging beam effects in out-of-plane grating diffraction of He atom beams. New Journal of Physics, 13(6):. doi:10.1088/1367-2630/13/6/065017.

引用: https://hdl.handle.net/11858/00-001M-0000-0011-29B5-5

要旨

We report on the observation of emerging beam resonances, well known as Rayleigh-Wood anoma- lies and threshold resonances in photon and electron diffraction, respectively, in an atom-optical diffraction experiment. Diffraction of He atom beams reflected from a blazed ruled grating at graz- ing incidence has been investigated. The total reflectivity of the grating as well as the intensities of the diffracted beams reveal anomalies at the Rayleigh angles of incidence, i.e., when another diffracted beam emerges parallel to the grating surface. The observed anomalies are discussed in terms of the classical wave-optical model of Rayleigh and Fano.