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Title: New capabilities in high-resolution neutron Larmor diffraction at ORNL

Abstract

Using superconducting magnetic Wollaston prisms, high-resolution neutron Larmor diffraction has been implemented at the High-Flux Isotope Reactor of Oak Ridge National Laboratory (ORNL), Tennesse, USA. This technique allows the inverse relationship between the achievable diffraction resolution and the usable neutron flux to be overcome. Instead of employing physically tilted radio-frequency spin flippers, the method uses magnetic Wollaston prisms which are electromagnetically tuned by changing the field configurations in the device. As implemented, this method can be used to measure lattice-spacing changes induced, for example, by thermal expansion or strain with a resolution of Δd/d ≃ 10–6, and the splitting of sharp Bragg peaks with a resolution of Δd/d = 3 × 10–4. The resolution for discerning a change in the profile of a Bragg peak is Δd/d < 10–5. This is a remarkable degree of precision for a neutron diffractometer as compact as the one used in this implementation. Higher precision could be obtained by implementing this technique in an instrument with a larger footprint. In conclusion, the availability of this technique will provide an alternative when standard neutron diffraction methods fail and will greatly benefit the scientific communities that require high-resolution diffraction measurements.

Authors:
ORCiD logo [1];  [2]; ORCiD logo [1];  [3]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1];  [4]; ORCiD logo [1];  [5]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. Indiana Univ., Bloomington, IN (United States)
  3. Delft Univ. of Technology, Delft (The Netherlands)
  4. Univ. of Tokyo, Chiba (Japan)
  5. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Indiana Univ., Bloomington, IN (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1485010
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Applied Crystallography (Online)
Additional Journal Information:
Journal Name: Journal of Applied Crystallography (Online); Journal Volume: 51; Journal Issue: 3; Journal ID: ISSN 1600-5767
Publisher:
International Union of Crystallography
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Larmor diffraction; magnetic Wollaston prisms; neutron spin Larmor labelling; neutron precession; high-resolution diffraction

Citation Formats

Li, Fankang, Feng, Hao, Thaler, Alexander Nicholas, Parnell, Steven R., Crow, Jr., Lowell, Matsuda, Masaaki, Ye, Feng, Kimura, Tsuyoshi, Fernandez-Baca, Jaime A., and Pynn, Roger. New capabilities in high-resolution neutron Larmor diffraction at ORNL. United States: N. p., 2018. Web. doi:10.1107/S1600576718004211.
Li, Fankang, Feng, Hao, Thaler, Alexander Nicholas, Parnell, Steven R., Crow, Jr., Lowell, Matsuda, Masaaki, Ye, Feng, Kimura, Tsuyoshi, Fernandez-Baca, Jaime A., & Pynn, Roger. New capabilities in high-resolution neutron Larmor diffraction at ORNL. United States. doi:10.1107/S1600576718004211.
Li, Fankang, Feng, Hao, Thaler, Alexander Nicholas, Parnell, Steven R., Crow, Jr., Lowell, Matsuda, Masaaki, Ye, Feng, Kimura, Tsuyoshi, Fernandez-Baca, Jaime A., and Pynn, Roger. Fri . "New capabilities in high-resolution neutron Larmor diffraction at ORNL". United States. doi:10.1107/S1600576718004211. https://www.osti.gov/servlets/purl/1485010.
@article{osti_1485010,
title = {New capabilities in high-resolution neutron Larmor diffraction at ORNL},
author = {Li, Fankang and Feng, Hao and Thaler, Alexander Nicholas and Parnell, Steven R. and Crow, Jr., Lowell and Matsuda, Masaaki and Ye, Feng and Kimura, Tsuyoshi and Fernandez-Baca, Jaime A. and Pynn, Roger},
abstractNote = {Using superconducting magnetic Wollaston prisms, high-resolution neutron Larmor diffraction has been implemented at the High-Flux Isotope Reactor of Oak Ridge National Laboratory (ORNL), Tennesse, USA. This technique allows the inverse relationship between the achievable diffraction resolution and the usable neutron flux to be overcome. Instead of employing physically tilted radio-frequency spin flippers, the method uses magnetic Wollaston prisms which are electromagnetically tuned by changing the field configurations in the device. As implemented, this method can be used to measure lattice-spacing changes induced, for example, by thermal expansion or strain with a resolution of Δd/d ≃ 10–6, and the splitting of sharp Bragg peaks with a resolution of Δd/d = 3 × 10–4. The resolution for discerning a change in the profile of a Bragg peak is Δd/d < 10–5. This is a remarkable degree of precision for a neutron diffractometer as compact as the one used in this implementation. Higher precision could be obtained by implementing this technique in an instrument with a larger footprint. In conclusion, the availability of this technique will provide an alternative when standard neutron diffraction methods fail and will greatly benefit the scientific communities that require high-resolution diffraction measurements.},
doi = {10.1107/S1600576718004211},
journal = {Journal of Applied Crystallography (Online)},
number = 3,
volume = 51,
place = {United States},
year = {2018},
month = {4}
}

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Works referenced in this record:

Neutron resonance spin echo—a new tool for high resolution spectroscopy
journal, June 1992


Magnetic field optimization and design of a superconducting neutron Wollaston prism
journal, April 2016


Spin echo modulated small-angle neutron scattering using superconducting magnetic Wollaston prisms
journal, February 2016

  • Li, Fankang; Parnell, Steven R.; Bai, Hongyu
  • Journal of Applied Crystallography, Vol. 49, Issue 1
  • DOI: 10.1107/S1600576715021573

Neutron spin echo: A new concept in polarized thermal neutron techniques
journal, April 1972

  • Mezei, F.
  • Zeitschrift für Physik A Hadrons and nuclei, Vol. 255, Issue 2
  • DOI: 10.1007/BF01394523

Larmor labeling development
journal, June 2011


Novel SANS instrument using Neutron Spin Echo
journal, July 1996

  • Rekveldt, M. Theo
  • Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 114, Issue 3-4
  • DOI: 10.1016/0168-583X(96)00213-3

TRISP: Three axes spin echo spectrometer
journal, June 2015

  • Keller, Thomas; Keimer, Bernhard
  • Journal of large-scale research facilities JLSRF, Vol. 1
  • DOI: 10.17815/jlsrf-1-41

Impact of uniaxial pressure on structural and magnetic phase transitions in electron-doped iron pnictides
journal, April 2016


A novel neutron spin echo technique for measuring phonon linewidths using magnetic Wollaston prisms
journal, October 2014


Larmor precession, a technique for high-sensitivity neutron diffraction
journal, May 2001


Magnetostriction and Magnetostructural Domains in Antiferromagnetic YBa 2 Cu 3 O 6
journal, January 2016


Neutron spin echo scattering angle measurement (SESAME)
journal, May 2005

  • Pynn, R.; Fitzsimmons, M. R.; Fritzsche, H.
  • Review of Scientific Instruments, Vol. 76, Issue 5
  • DOI: 10.1063/1.1884187

Nuclear Induction
journal, October 1946


High resolution neutron Larmor diffraction using superconducting magnetic Wollaston prisms
journal, April 2017


Superconductors of finite thickness in a perpendicular magnetic field: Strips and slabs
journal, August 1996


A neutron resonance spin echo spectrometer for quasi-elastic and inelastic scattering
journal, July 1987


Superconducting magnetic Wollaston prism for neutron spin encoding
journal, May 2014

  • Li, F.; Parnell, S. R.; Hamilton, W. A.
  • Review of Scientific Instruments, Vol. 85, Issue 5
  • DOI: 10.1063/1.4875984

Neutron Larmor diffraction measurement of the lattice-spacing spread of pyrolytic graphite
journal, December 2002

  • Keller, T.; Rekveldt, M. Th.; Habicht, K.
  • Applied Physics A: Materials Science & Processing, Vol. 74, Issue 0
  • DOI: 10.1007/s003390101082

Larmor neutron diffraction with one precession arm
journal, January 2014

  • Rekveldt, M. T.; Plomp, J.; van Well, A. A.
  • Journal of Applied Crystallography, Vol. 47, Issue 1
  • DOI: 10.1107/S1600576713033839

Spin echo small angle neutron scattering using a continuously pumped 3He neutron polarisation analyser
journal, February 2015

  • Parnell, S. R.; Washington, A. L.; Li, K.
  • Review of Scientific Instruments, Vol. 86, Issue 2
  • DOI: 10.1063/1.4909544