Characterization of oriented microstructures through anisotropic small-angle scattering by 2D neutron dark-field imaging
(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.
(Less)
- author
- Valsecchi, Jacopo
; Strobl, Markus
LU
; Harti, Ralph Patrick
; Carminati, Chiara
; Trtik, Pavel
; Kaestner, Anders
; Grünzweig, Christian
; Wang, Zhentian
; Jefimovs, Konstantins
and Kagias, Matias
LU
- publishing date
- 2020-12-01
- 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}}, }