Depolarization in polarizing supermirrors
| Autor: | Nataliya Rebrova, T. Bigault, Christine Klauser, Anton Devishvili, P. Courtois, T. Soldner, Peter Böni, Michael Schneider |
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| Rok vydání: | 2016 |
| Předmět: |
Physics
Nuclear and High Energy Physics Magnetism business.industry Depolarization equipment and supplies Polarization (waves) 01 natural sciences 010305 fluids & plasmas Full width at half maximum Magnetization Wavelength Optics Ferromagnetism 0103 physical sciences Physics::Accelerator Physics Specular reflection 010306 general physics business human activities Instrumentation |
| Zdroj: | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 840:181-185 |
| ISSN: | 0168-9002 |
| DOI: | 10.1016/j.nima.2016.09.056 |
| Popis: | We present data on depolarizing effects in polarizing mirrors. At typical magnetizing field strengths used in polarizing devices, depolarizations rise up to the percent level in the specular region and are shown to be successfully suppressed to 10−4 when increasing the magnetizing field. We show evidence linking a part of this depolarization to lateral correlation of the magnetization fluctuations in the ferromagnetic layers. Effects of the supermirror factor (m), wavelength and incidence angle are studied. The findings are applied to a crossed supermirror geometry and we report a neutron beam polarization of 99.97(1)% for a beam of wavelength (FWHM). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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