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.
|Schools:||Schools > School of Computing, Science and Engineering|
|Journal or Publication Title:||New Journal of Physics|
|Publisher:||© IOP Publishing Ltd a|
|Depositing User:||Institutional Repository|
|Date Deposited:||11 Sep 2014 16:31|
|Last Modified:||05 Apr 2016 18:16|
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