Dynamics from elastic neutron-scattering via direct measurement of the running time-integral of the van Hove distribution function

We present a new neutron-scattering approach to access the van Hove distribution function directly in the time domain, I(t), which reflects the system dynamics. Currently, I(t) is essentially determined from neutron energy-exchange. Our method consists of the straightforward measurement of the runni...

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Detalles Bibliográficos
Autores principales: Benedetto, Antonio, Kearley, Gordon J.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6677729/
https://www.ncbi.nlm.nih.gov/pubmed/31375739
http://dx.doi.org/10.1038/s41598-019-46835-z
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author Benedetto, Antonio
Kearley, Gordon J.
author_facet Benedetto, Antonio
Kearley, Gordon J.
author_sort Benedetto, Antonio
collection PubMed
description We present a new neutron-scattering approach to access the van Hove distribution function directly in the time domain, I(t), which reflects the system dynamics. Currently, I(t) is essentially determined from neutron energy-exchange. Our method consists of the straightforward measurement of the running time-integral of I(t), by computing the portion of scattered neutrons corresponding to species at rest within a time t, (conceptually elastic scattering). Previous attempts failed to recognise this connection. Starting from a theoretical standpoint, a practical realisation is assessed via numerical methods and an instrument simulation.
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spelling pubmed-66777292019-08-08 Dynamics from elastic neutron-scattering via direct measurement of the running time-integral of the van Hove distribution function Benedetto, Antonio Kearley, Gordon J. Sci Rep Article We present a new neutron-scattering approach to access the van Hove distribution function directly in the time domain, I(t), which reflects the system dynamics. Currently, I(t) is essentially determined from neutron energy-exchange. Our method consists of the straightforward measurement of the running time-integral of I(t), by computing the portion of scattered neutrons corresponding to species at rest within a time t, (conceptually elastic scattering). Previous attempts failed to recognise this connection. Starting from a theoretical standpoint, a practical realisation is assessed via numerical methods and an instrument simulation. Nature Publishing Group UK 2019-08-02 /pmc/articles/PMC6677729/ /pubmed/31375739 http://dx.doi.org/10.1038/s41598-019-46835-z Text en © The Author(s) 2019 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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license 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 license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Benedetto, Antonio
Kearley, Gordon J.
Dynamics from elastic neutron-scattering via direct measurement of the running time-integral of the van Hove distribution function
title Dynamics from elastic neutron-scattering via direct measurement of the running time-integral of the van Hove distribution function
title_full Dynamics from elastic neutron-scattering via direct measurement of the running time-integral of the van Hove distribution function
title_fullStr Dynamics from elastic neutron-scattering via direct measurement of the running time-integral of the van Hove distribution function
title_full_unstemmed Dynamics from elastic neutron-scattering via direct measurement of the running time-integral of the van Hove distribution function
title_short Dynamics from elastic neutron-scattering via direct measurement of the running time-integral of the van Hove distribution function
title_sort dynamics from elastic neutron-scattering via direct measurement of the running time-integral of the van hove distribution function
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6677729/
https://www.ncbi.nlm.nih.gov/pubmed/31375739
http://dx.doi.org/10.1038/s41598-019-46835-z
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