Magnetic planar waveguides as combined polarizers and spin-flippers for neutron microbeams

We propose waveguide structures which transform an incident unpolarized beam into a polarized microbeam and also can be used as spin-flippers by varying the incidence angle on the structure. We describe optimized structures combining these functions. Such waveguides could be used for the investigati...

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Veröffentlicht in:Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2013-04, Vol.708, p.83-87
Hauptverfasser: Rühm, A., Kozhevnikov, S.V., Ott, F., Radu, F., Major, J.
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Sprache:eng
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Zusammenfassung:We propose waveguide structures which transform an incident unpolarized beam into a polarized microbeam and also can be used as spin-flippers by varying the incidence angle on the structure. We describe optimized structures combining these functions. Such waveguides could be used for the investigation of one-dimensional magnetic structures and could be implemented on any existing fixed wavelength reflectometer. ► We propose a waveguide transforming a neutron beam into a polarized microbeam. ► This thin-film device acts as polarizer and spin-flipper for neutron microbeam. ► We calculate optimized parameters of this waveguide. ► Application of waveguides is in investigation of magnetic microstructures.
ISSN:0168-9002
1872-9576
DOI:10.1016/j.nima.2012.12.116