Quantitative radiography of magnetic fields using neutron spin phase imaging

We report on a novel neutron radiography technique that uses the Ramsey principle, a method similar to neutron spin echo. For the first time quantitative imaging measurements of magnetic objects and fields could be performed. The strength of the spin-dependent magnetic interaction is detected by a c...

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Bibliographic Details
Published in:Physical review letters 2009-04, Vol.102 (14), p.145501-145501, Article 145501
Main Authors: Piegsa, F M, van den Brandt, B, Hautle, P, Kohlbrecher, J, Konter, J A
Format: Article
Language:English
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Summary:We report on a novel neutron radiography technique that uses the Ramsey principle, a method similar to neutron spin echo. For the first time quantitative imaging measurements of magnetic objects and fields could be performed. The strength of the spin-dependent magnetic interaction is detected by a change in the Larmor precession frequency of the neutron spins. Hence, one obtains in addition to the normal attenuation radiography image a so-called neutron spin phase image, which provides a two-dimensional projection of the magnetic field integrated over the neutron flight path.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.102.145501