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Characterization of oriented microstructures through anisotropic small-angle scattering by 2D neutron dark-field imaging

Valsecchi, Jacopo ; Strobl, Markus LU ; Harti, Ralph Patrick ; Carminati, Chiara ; Trtik, Pavel ; Kaestner, Anders ; Grünzweig, Christian ; Wang, Zhentian ; Jefimovs, Konstantins and Kagias, Matias LU orcid (2020) In Communications Physics 3(1).
Abstract

Within neutron imaging, different methods have been developed with the aim to go beyond the conventional contrast modalities, such as grating interferometry. Existing grating interferometers are sensitive to scattering in a single direction only, and thus investigations of anisotropic scattering structures imply the need for a circular scan of either the sample or the gratings. Here we propose an approach that allows assessment of anisotropic scattering in a single acquisition mode and to broaden the range of the investigation with respect to the probed correlation lengths. This is achieved by a far-field grating interferometer with a tailored 2D-design. The combination of a directional neutron dark-field imaging approach with a scan of... (More)

Within neutron imaging, different methods have been developed with the aim to go beyond the conventional contrast modalities, such as grating interferometry. Existing grating interferometers are sensitive to scattering in a single direction only, and thus investigations of anisotropic scattering structures imply the need for a circular scan of either the sample or the gratings. Here we propose an approach that allows assessment of anisotropic scattering in a single acquisition mode and to broaden the range of the investigation with respect to the probed correlation lengths. This is achieved by a far-field grating interferometer with a tailored 2D-design. The combination of a directional neutron dark-field imaging approach with a scan of the sample to detector distance yields to the characterization of the local 2D real-space correlation functions of a strongly oriented sample analogous to conventional small-angle scattering. Our results usher in quantitative and spatially resolved investigations of anisotropic and strongly oriented systems beyond current capabilities.

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; ; ; ; ; ; ; ; and
publishing date
type
Contribution to journal
publication status
published
subject
in
Communications Physics
volume
3
issue
1
article number
42
publisher
Nature Publishing Group
external identifiers
  • scopus:85080995505
ISSN
2399-3650
DOI
10.1038/s42005-020-0308-4
language
English
LU publication?
no
additional info
Funding Information: The work is partially funded by the Swiss National Science Foundation under project number 162582. We gratefully acknowledge M. Raventós, M. D. Siegwart, Y. Kim, M. Morgano, P. Boillat, F. M. Piegsa, W. Treimer, J. S. White, J. Kohlbrecher, E. Leh-mann and C. Rüegg for the fruitful discussions. We also thank J. Hovind, and M. Schild for the precious technical support. Publisher Copyright: © 2020, The Author(s).
id
6e719579-43eb-4cef-95dc-f226d89f7f29
date added to LUP
2023-11-27 09:00:38
date last changed
2024-06-19 16:55:44
@article{6e719579-43eb-4cef-95dc-f226d89f7f29,
  abstract     = {{<p>Within neutron imaging, different methods have been developed with the aim to go beyond the conventional contrast modalities, such as grating interferometry. Existing grating interferometers are sensitive to scattering in a single direction only, and thus investigations of anisotropic scattering structures imply the need for a circular scan of either the sample or the gratings. Here we propose an approach that allows assessment of anisotropic scattering in a single acquisition mode and to broaden the range of the investigation with respect to the probed correlation lengths. This is achieved by a far-field grating interferometer with a tailored 2D-design. The combination of a directional neutron dark-field imaging approach with a scan of the sample to detector distance yields to the characterization of the local 2D real-space correlation functions of a strongly oriented sample analogous to conventional small-angle scattering. Our results usher in quantitative and spatially resolved investigations of anisotropic and strongly oriented systems beyond current capabilities.</p>}},
  author       = {{Valsecchi, Jacopo and Strobl, Markus and Harti, Ralph Patrick and Carminati, Chiara and Trtik, Pavel and Kaestner, Anders and Grünzweig, Christian and Wang, Zhentian and Jefimovs, Konstantins and Kagias, Matias}},
  issn         = {{2399-3650}},
  language     = {{eng}},
  month        = {{12}},
  number       = {{1}},
  publisher    = {{Nature Publishing Group}},
  series       = {{Communications Physics}},
  title        = {{Characterization of oriented microstructures through anisotropic small-angle scattering by 2D neutron dark-field imaging}},
  url          = {{http://dx.doi.org/10.1038/s42005-020-0308-4}},
  doi          = {{10.1038/s42005-020-0308-4}},
  volume       = {{3}},
  year         = {{2020}},
}