Guiding and focusing neutron beams using capillary optics

Details Guiding and focusing neutron beams using capillary optics Guiding and focusing neutron beams using capillary optics

Jun 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992natur.357..391c&link_type=abstract

Nature (ISSN 0028-0836), vol. 357, no. 6377, June 4, 1992, p. 391-393.

Physics

Optics

28

Capillary Tubes, Fiber Optics, Focusing, Neutron Beams, Optical Fibers, Cold Neutrons, Electron Microscopy, Lenses, Optical Reflection, X Rays

Scientific paper

The properties of multiple capillary fiber bundles are studied by measuring the neutron beam transmission efficiency as a function of bending radius. The fibers used are shown to bend a neutron beam through 20 deg in a distance of 130 mm, with a transmission of 50 percent. A simple device made of a few fibers is used to demonstrate the focusing of cold neutrons down to a 1 sq mm spot size. These investigations will form the basis for the design of a neutron lens for use in materials research or a beam bender capable of dividing and directing a neutron beam towards several experimental stations.

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