Advanced neutron imaging methods with a potential to benefit from pulsed sources |
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Authors: | M Strobl N KardjilovA Hilger D PenumaduI Manke |
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Affiliation: | a Helmholtz Zentrum Berlin, Hahn-Meitner Platz 1, 14109 Berlin, Germany b University of Tennessee, CEE Department, 223 Perkins Hall, Knoxville, TN 37996, USA |
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Abstract: | During the last decade neutron imaging has seen significant improvements in instrumentation, detection and spatial resolution. Additionally, a variety of new applications and methods have been explored. As a consequence of an outstanding development nowadays various techniques of neutron imaging go far beyond a two- and three-dimensional mapping of the attenuation coefficients for a broad range of samples. Neutron imaging has become sensitive to neutron scattering in the small angle scattering range as well as with respect to Bragg scattering. Corresponding methods potentially provide spatially resolved and volumetric data revealing microstructural inhomogeneities, texture variations, crystalline phase distributions and even strains in bulk samples. Other techniques allow for the detection of refractive index distribution through phase sensitive measurements and the utilization of polarized neutrons enables radiographic and tomographic investigations of magnetic fields and properties as well as electrical currents within massive samples. All these advanced methods utilize or depend on wavelength dependent signals, and are hence suited to profit significantly from pulsed neutron sources as will be discussed. |
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Keywords: | Neutron imaging Small angle scattering (ultra) Bragg scattering Polarized neutrons Pulsed neutron sources |
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