Small Angle Scattering in Neutron Imaging
A Review
Markus Strobl (University of Copenhagen, Paul Scherrer Institut)
Ralph P. Harti (Paul Scherrer Institut)
Christian Grünzweig (Paul Scherrer Institut)
Robin Woracek (European Spallation Source ESS ERIC)
Jeroen Plomp (TU Delft - RID/TS/Technici Pool)
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Abstract
Conventional neutron imaging utilizes the beam attenuation caused by scattering and absorption through the materials constituting an object in order to investigate its macroscopic inner structure. Small angle scattering has basically no impact on such images under the geometrical conditions applied. Nevertheless, in recent years different experimental methods have been developed in neutron imaging, which enable to not only generate contrast based on neutrons scattered to very small angles, but to map and quantify small angle scattering with the spatial resolution of neutron imaging. This enables neutron imaging to access length scales which are not directly resolved in real space and to investigate bulk structures and processes spanning multiple length scales from centimeters to tens of nanometers.
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