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Título: | Scattering of He atoms from a microstructured grating: quantum reflection probabilities and diffraction patterns |
Autor: | Miret-Artés, Salvador CSIC ORCID; Pollak, Eli | Fecha de publicación: | 10-feb-2017 | Editor: | American Chemical Society | Citación: | Journal of Physical Chemistry Letters 8: 1009- 1013 (2017) | Resumen: | The quantum reflection measured previously by Zhao et al. (Phys. Rev. A 2008, 78, 010902(R)) for the scattering of He atoms off of a microstructured grating is described and analyzed theoretically. Using the close-coupling formalism with a complex absorbing potential and describing the long-range interaction in terms of the Casimir-van der Waals potential, we find probabilities and diffraction patterns that are in fairly good agreement with the experimental results. The central outcomes of this study are two-fold. First is the theoretical confirmation that, indeed, the phenomenon of quantum reflection may be detected not only through the elastic peak but also in terms of a quantum reflected diffraction pattern. Second, we demonstrate that the phenomenon of quantum reflection is the result of a coherent process where all of the potential regions are involved on an equal footing. It is a nonlocal property and cannot be related only to the long-range badlands region of the potential of interaction. | Descripción: | 5 pags., 2 figs., tab. | Versión del editor: | http://doi.org/10.1021/acs.jpclett.6b02991 | URI: | http://hdl.handle.net/10261/160138 | DOI: | 10.1021/acs.jpclett.6b02991 | Identificadores: | doi: 10.1021/acs.jpclett.6b02991 issn: 1948-7185 |
Aparece en las colecciones: | (CFMAC-IFF) Artículos |
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