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Neutron refraction by cylindrical metal wires

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Title: Neutron refraction by cylindrical metal wires
Authors: Plomp, J.1 j.plomp@tudelft.nl, Barker, J.G.2, de Haan, V.O.1, Bouwman, W.G.1, van Well, A.A.1
Source: Nuclear Instruments & Methods in Physics Research Section A. May2007, Vol. 574 Issue 2, p324-329. 6p.
Subjects: Neutrons, Wire, Scattering (Physics), Refraction (Optics)
Abstract: Abstract: Undesired Small-Angle Neutron Scattering (SANS) from interior features of an object can be minimised by reducing the sample thickness. However, refraction effects produced by the exterior shape of the object depend upon the scattering cross-section and not on the thickness of the object. In the field of polarised neutrons a wire coil is often used to manipulate the polarisation vector of the neutron. In this paper, we show that the cylindrical shape of the wire together with the refractive index introduces an angular distribution in the neutron beam. This can be observed in instrumentation sensitive to SANS. We show results measured on three different SANS instruments: Ultra Small-Angle Neutrons Scattering (USANS), Spin-Echo Small-Angle Neutron Scattering (SESANS) and a Time-of-Flight (TOF) SESANS. These results are all in good agreement with the theory of refraction. [Copyright &y& Elsevier]
Copyright of Nuclear Instruments & Methods in Physics Research Section A is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 24610250
AccessLevel: 6
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  Data: <searchLink fieldCode="JN" term="%22Nuclear+Instruments+%26+Methods+in+Physics+Research+Section+A%22">Nuclear Instruments & Methods in Physics Research Section A</searchLink>. May2007, Vol. 574 Issue 2, p324-329. 6p.
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  Data: Abstract: Undesired Small-Angle Neutron Scattering (SANS) from interior features of an object can be minimised by reducing the sample thickness. However, refraction effects produced by the exterior shape of the object depend upon the scattering cross-section and not on the thickness of the object. In the field of polarised neutrons a wire coil is often used to manipulate the polarisation vector of the neutron. In this paper, we show that the cylindrical shape of the wire together with the refractive index introduces an angular distribution in the neutron beam. This can be observed in instrumentation sensitive to SANS. We show results measured on three different SANS instruments: Ultra Small-Angle Neutrons Scattering (USANS), Spin-Echo Small-Angle Neutron Scattering (SESANS) and a Time-of-Flight (TOF) SESANS. These results are all in good agreement with the theory of refraction. [Copyright &y& Elsevier]
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  Data: <i>Copyright of Nuclear Instruments & Methods in Physics Research Section A is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/j.nima.2007.02.068
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      – Code: eng
        Text: English
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        Type: general
      – SubjectFull: Wire
        Type: general
      – SubjectFull: Scattering (Physics)
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      – SubjectFull: Refraction (Optics)
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              Text: May2007
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