Journal
APPLIED PHYSICS LETTERS
Volume 91, Issue 25, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2825276
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Besides the attenuation of a neutron beam penetrating an object, induced phase changes have been utilized to provide contrast in neutron and x-ray imaging. In analogy to differential phase contrast imaging of bulk samples, the refraction of neutrons by magnetic fields yields image contrast. Here, it will be reported how double crystal setups can provide quantitative tomographic images of magnetic fields. The use of magnetic air prisms adequate to split the neutron spin states enables a distinction of field induced phase shifts and these introduced by interaction with matter. (C) 2007 American Institute of Physics.
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