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Proceedings Paper

Neutron waveguides: a new neutron optical device for the production of submicrometer neutron beams
Author(s): Franz Pfeiffer; Peter Hoghoj; Ian S. Anderson; V. Leiner
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Paper Abstract

Planar neutron waveguide structures can be used as resonant beam coupling devices to produce a coherent and divergent neutron line source with cross-sections in the sub-micrometer range. This article reviews our recent work on the theoretical model, the fabrication and the characterization of these devices, demonstrating clearly the good agreement between the theoretical model and the feasability of using neutron waveguides for various applications. As one major result,the farfield-pattern of the first three modes of a neutron waveguide was measured, yielding a 17 times enhanced flux throughput compared to a pair of slits corresponding to the thickness of the guiding layer. Additionally we have generalized the principle of neutron resonant beam coupling to waveguides containing multiple guiding layers, where several beams with a width of the order of 10 to 100 nm can be extracted at the end leading to an typical farfield interference pattern.

Paper Details

Date Published: 8 November 2001
PDF: 9 pages
Proc. SPIE 4509, Neutron Optics, (8 November 2001); doi: 10.1117/12.448062
Show Author Affiliations
Franz Pfeiffer, Institut Laue-Langevin and Univ. des Saarlands (Germany)
Peter Hoghoj, Institut Laue-Langevin (France)
Ian S. Anderson, Institut Laue-Langevin (United States)
V. Leiner, Institut Laue-Langevin and Ruhr-Univ. Bochum (France)

Published in SPIE Proceedings Vol. 4509:
Neutron Optics
James L. Wood; Ian S. Anderson, Editor(s)

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