Neutron spin echo spectroscopy with a moving sample

Neutron spin echo spectroscopy is a high resolution inelastic neutron scattering method probing nanosecond dynamics. It is well suited to study the atomistic motion in polymer systems and contributes to our understanding of viscoelasticity. However, for samples under shear, or moving samples in gene...

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Autores principales: Gvaramia, Manuchar, Gutfreund, Philipp, Falus, Peter, Faraone, Antonio, Nagao, Michihiro, Wolff, Max
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2023
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10421866/
https://www.ncbi.nlm.nih.gov/pubmed/37567960
http://dx.doi.org/10.1038/s41598-023-39854-4
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author Gvaramia, Manuchar
Gutfreund, Philipp
Falus, Peter
Faraone, Antonio
Nagao, Michihiro
Wolff, Max
author_facet Gvaramia, Manuchar
Gutfreund, Philipp
Falus, Peter
Faraone, Antonio
Nagao, Michihiro
Wolff, Max
author_sort Gvaramia, Manuchar
collection PubMed
description Neutron spin echo spectroscopy is a high resolution inelastic neutron scattering method probing nanosecond dynamics. It is well suited to study the atomistic motion in polymer systems and contributes to our understanding of viscoelasticity. However, for samples under shear, or moving samples in general, Doppler scattering has to be considered. We compare the measured phase shift and depolarisation due to Doppler scattering from a rotating graphite disk to numerical and analytical calculations and find excellent agreement. This allows to take into account Doppler scattering during the data processing and makes longer Fourier times as well as higher shear rates and Q ranges possible with neutron spin echo spectroscopy, enabling for example the study of polymers under high shear.
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spelling pubmed-104218662023-08-13 Neutron spin echo spectroscopy with a moving sample Gvaramia, Manuchar Gutfreund, Philipp Falus, Peter Faraone, Antonio Nagao, Michihiro Wolff, Max Sci Rep Article Neutron spin echo spectroscopy is a high resolution inelastic neutron scattering method probing nanosecond dynamics. It is well suited to study the atomistic motion in polymer systems and contributes to our understanding of viscoelasticity. However, for samples under shear, or moving samples in general, Doppler scattering has to be considered. We compare the measured phase shift and depolarisation due to Doppler scattering from a rotating graphite disk to numerical and analytical calculations and find excellent agreement. This allows to take into account Doppler scattering during the data processing and makes longer Fourier times as well as higher shear rates and Q ranges possible with neutron spin echo spectroscopy, enabling for example the study of polymers under high shear. Nature Publishing Group UK 2023-08-11 /pmc/articles/PMC10421866/ /pubmed/37567960 http://dx.doi.org/10.1038/s41598-023-39854-4 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Gvaramia, Manuchar
Gutfreund, Philipp
Falus, Peter
Faraone, Antonio
Nagao, Michihiro
Wolff, Max
Neutron spin echo spectroscopy with a moving sample
title Neutron spin echo spectroscopy with a moving sample
title_full Neutron spin echo spectroscopy with a moving sample
title_fullStr Neutron spin echo spectroscopy with a moving sample
title_full_unstemmed Neutron spin echo spectroscopy with a moving sample
title_short Neutron spin echo spectroscopy with a moving sample
title_sort neutron spin echo spectroscopy with a moving sample
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10421866/
https://www.ncbi.nlm.nih.gov/pubmed/37567960
http://dx.doi.org/10.1038/s41598-023-39854-4
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