Kumakhov optics

Kumakhov optics

[kü′mä‚kȯf ‚äp·tiks]
(optics)
Systems composed of bundles of glass fibers that behave as waveguides to propagate x-rays or neutrons by multiple internal refllections, and that can be bent or tapered to concentrate, collimate, or focus the radiation. Also known as polycapillary optics.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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Older devices and neutron beam collimators use single capillary or polycapillary fibers guided through metal meshes, whereas for laboratory use the capillary fibers are closely packed along their entire length (monolithic Kumakhov optic) and tapered to the desired shape.