International Conference on Polarised Neutrons for Condensed Matter Investigations | |
Neutron multimonochromator-bipolarizer based on magnetic multilayer Fe/Co and new scheme for the total neutron polarization analysis | |
Syromyatnikov, V.G.^1,2 ; Zaw Lin, Kyaw^1 | |
Department of Physics, St. Petersburg State University, Ulyanovskaya, 1, Petrodvorets-St-Petersburg | |
198504, Russia^1 | |
Neutron Research Department, Petersburg Nuclear Physics Institute, National Research Center, Kurchatov Institute, Orlova Roscha, Gatchina, St-Petersburg | |
188300, Russia^2 | |
关键词: Magnetic nanostructures; Neutron polarization analysis; Periodic multilayers; Polarized neutron reflectometry; Polarized neutrons; Reflectometry; Spin flipper; Time of Flight methods; | |
Others : https://iopscience.iop.org/article/10.1088/1742-6596/862/1/012016/pdf DOI : 10.1088/1742-6596/862/1/012016 |
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来源: IOP | |
【 摘 要 】
In this paper, we present a new neutron-optical element, Neutron Multimonochromator-Bipolarizer (NMB). It consists of a multimultilayer structure made of 12 periodic multilayer Fe/Co magnetic nanostructures whose period increases with distance from the substrate. Results are presented of calculations of the reflection coefficients from the NMB. We propose a new scheme of the total neutron polarization analysis for the time-of-flight method in the reflectometry. In this scheme, double NMB is used as a polarizer and there is no spin-flipper before the sample. NMB can be used in polarized neutron reflectometry, in SESANS, and for research of low-angle and inelastic scattering of polarized neutrons.
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