SUSANS With Polarized Neutrons

Super Ultra-Small Angle Neutron Scattering (SUSANS) studies over wave vector transfers of 10(–4) nm(–1) to 10(–3) nm(–1) afford information on micrometer-size agglomerates in samples. Using a right-angled magnetic air prism, we have achieved a separation of ≈10 arcsec between ≈2 arcsec wide up- and...

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Detalles Bibliográficos
Autores principales: Wagh, Apoorva G., Rakhecha, Veer Chand, Strobl, Makus, Treimer, Wolfgang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: [Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology 2005
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4849613/
https://www.ncbi.nlm.nih.gov/pubmed/27308127
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author Wagh, Apoorva G.
Rakhecha, Veer Chand
Strobl, Makus
Treimer, Wolfgang
author_facet Wagh, Apoorva G.
Rakhecha, Veer Chand
Strobl, Makus
Treimer, Wolfgang
author_sort Wagh, Apoorva G.
collection PubMed
description Super Ultra-Small Angle Neutron Scattering (SUSANS) studies over wave vector transfers of 10(–4) nm(–1) to 10(–3) nm(–1) afford information on micrometer-size agglomerates in samples. Using a right-angled magnetic air prism, we have achieved a separation of ≈10 arcsec between ≈2 arcsec wide up- and down-spin peaks of 0.54 nm neutrons. The SUSANS instrument has thus been equipped with the polarized neutron option. The samples are placed in a uniform vertical field of 8.8 × 10(4) A/m (1.1 kOe). Several magnetic alloy ribbon samples broaden the up-spin neutron peak significantly over the ±1.3 × 10(–3) nm(–1) range, while leaving the down-spin peak essentially unaltered. Fourier transforms of these SUSANS spectra corrected for the instrument resolution, yield micrometer-range pair distribution functions for up- and down-spin neutrons as well as the nuclear and magnetic scattering length density distributions in the samples.
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spelling pubmed-48496132016-06-15 SUSANS With Polarized Neutrons Wagh, Apoorva G. Rakhecha, Veer Chand Strobl, Makus Treimer, Wolfgang J Res Natl Inst Stand Technol Article Super Ultra-Small Angle Neutron Scattering (SUSANS) studies over wave vector transfers of 10(–4) nm(–1) to 10(–3) nm(–1) afford information on micrometer-size agglomerates in samples. Using a right-angled magnetic air prism, we have achieved a separation of ≈10 arcsec between ≈2 arcsec wide up- and down-spin peaks of 0.54 nm neutrons. The SUSANS instrument has thus been equipped with the polarized neutron option. The samples are placed in a uniform vertical field of 8.8 × 10(4) A/m (1.1 kOe). Several magnetic alloy ribbon samples broaden the up-spin neutron peak significantly over the ±1.3 × 10(–3) nm(–1) range, while leaving the down-spin peak essentially unaltered. Fourier transforms of these SUSANS spectra corrected for the instrument resolution, yield micrometer-range pair distribution functions for up- and down-spin neutrons as well as the nuclear and magnetic scattering length density distributions in the samples. [Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology 2005 2005-06-01 /pmc/articles/PMC4849613/ /pubmed/27308127 Text en https://creativecommons.org/publicdomain/zero/1.0/ The Journal of Research of the National Institute of Standards and Technology is a publication of the U.S. Government. The papers are in the public domain and are not subject to copyright in the United States. Articles from J Res may contain photographs or illustrations copyrighted by other commercial organizations or individuals that may not be used without obtaining prior approval from the holder of the copyright.
spellingShingle Article
Wagh, Apoorva G.
Rakhecha, Veer Chand
Strobl, Makus
Treimer, Wolfgang
SUSANS With Polarized Neutrons
title SUSANS With Polarized Neutrons
title_full SUSANS With Polarized Neutrons
title_fullStr SUSANS With Polarized Neutrons
title_full_unstemmed SUSANS With Polarized Neutrons
title_short SUSANS With Polarized Neutrons
title_sort susans with polarized neutrons
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4849613/
https://www.ncbi.nlm.nih.gov/pubmed/27308127
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