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Titel:

Focusing of Cold Neutrons: {{Performance}} of a Laterally Graded and Parabolically Bent Multilayer

Dokumenttyp:
Zeitschriftenaufsatz
Autor(en):
Schneider, M.; Stahn, J.; B̈oni, P.
Abstract:
We have designed and built a parabolically shaped reflector with a Ni/Ti-multilayer coating, graded along the length of the device. The bilayer thickness follows the varying angle of incidence to match the Bragg condition for a beam parallel to the axis of the parabola. As measurements show, this concept leads to a higher reflectivity for monochromatic neutrons compared to a conventional supermirror coating. With a reflectivity R496% we measured a gain of 5 when focusing a 8.6 mm wide beam of 0:...     »
Zeitschriftentitel:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Jahr:
2009
Band / Volume:
610
Monat:
nov
Heft / Issue:
2
Seitenangaben Beitrag:
530
Sprache:
en
Volltext / DOI:
doi:10.1016/j.nima.2009.08.047
Print-ISSN:
01689002
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