Imaging with polarized neutrons

Dawson, M, Manke, I, Kardjilov, N, Hilger, A, Strobl, M and Banhart, J 2009, 'Imaging with polarized neutrons' , New Journal of Physics, 11 (4) , 043013.

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Neutrons have zero net electrical charge and can thus penetrate deeply into matter, but their intrinsic magnetic moment makes them highly sensitive to magnetic fields. These properties have been combined with radiographic (2D) and tomographic (3D) imaging methods to provide a unique technique to probe macroscopic magnetic phenomena both within and around bulk matter. Based on the spin-rotation of a polarized neutron beam as it passes through a magnetic field, this method allows the direct, real-space visualization of magnetic field distributions. It has been used to investigate the Meissner effect in a type I (Pb) and a type II (YBCO) superconductor, flux trapping in a type I (Pb) superconductor, and the electromagnetic field associated with a direct current flowing in a solenoid. The latter results have been compared to predictions calculated using the Biot–Savart law and have been found to agree well.

Item Type: Article
Schools: Schools > School of Computing, Science and Engineering
Journal or Publication Title: New Journal of Physics
Publisher: IOP Publishing Ltd
Refereed: Yes
ISSN: 1367-2630
Depositing User: Institutional Repository
Date Deposited: 11 Sep 2014 16:31
Last Modified: 26 Aug 2018 09:38

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