title: Quantitative Neutron Dark-field Imaging through Spin-Echo Interferometry.
abstract: Neutron dark-field imaging constitutes a seminal progress in the field of neutron imaging as it combines real space resolution capability with information provided by one of the most significant neutron scattering techniques, namely small angle scattering. The success of structural characterizations bridging the gap between macroscopic and microscopic features has been enabled by the introduction of grating interferometers so far. The induced interference pattern, a spatial beam modulation, allows for mapping of small-angle scattering signals and hence addressing microstructures beyond direct spatial resolution of the imaging system with high efficiency. However, to date the quantification in the small angle scattering regime is severely limited by the monochromatic approach. To overcome such drawback we here introduce an alternative and more flexible method of interferometric beam modulation utilizing a spin-echo technique. This novel method facilitates straightforward quantitative dark-field neutron imaging, i.e. the required quantitative microstructural characterization combined with real space image resolution. For the first time quantitative microstructural reciprocal space information from small angle neutron scattering becomes available together with macroscopic image information creating the potential to quantify several orders of magnitude in structure sizes simultaneously.
authors.affiliation: European Spallation Source AB, Lund 22100, Sweden.|University of Copenhagen, The Niels Bohr Institute, Copenhagen 2100, Denmark.
authors.forename: Markus
authors.initials: M
authors.lastname: Strobl
authors.affiliation: University of Copenhagen, The Niels Bohr Institute, Copenhagen 2100, Denmark.|Helmholtz Centre Berlin for Materials and Energy (HZB), Berlin 14109, Germany.
authors.forename: Morten
authors.initials: M
authors.lastname: Sales
authors.affiliation: Delft University of Technology, Reactor Institut Delft, Delft 2629, The Netherlands.
authors.forename: Jeroen
authors.initials: J
authors.lastname: Plomp
authors.affiliation: Delft University of Technology, Reactor Institut Delft, Delft 2629, The Netherlands.
authors.forename: Wim G
authors.initials: WG
authors.lastname: Bouwman
authors.affiliation: University of California at Berkeley, Space Sciences Laboratory, Berkeley 94720, California, USA.
authors.forename: Anton S
authors.initials: AS
authors.lastname: Tremsin
authors.affiliation: Paul Scherrer Institut, Villigen-PSI 5232, Switzerland.
authors.forename: Anders
authors.initials: A
authors.lastname: Kaestner
authors.affiliation: Delft University of Technology, Reactor Institut Delft, Delft 2629, The Netherlands.
authors.forename: Catherine
authors.initials: C
authors.lastname: Pappas
authors.affiliation: Helmholtz Centre Berlin for Materials and Energy (HZB), Berlin 14109, Germany.
authors.forename: Klaus
authors.initials: K
authors.lastname: Habicht