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Title: High resolution neutron Larmor diffraction using superconducting magnetic Wollaston prisms

The neutron Larmor diffraction technique has been implemented using superconducting magnetic Wollaston prisms in both single-arm and double-arm configurations. Successful measurements of the coefficient of thermal expansion of a single-crystal copper sample demonstrates that the method works as expected. Our experiment involves a new method of tuning by varying the magnetic field configurations in the device and the tuning results agree well with previous measurements. The difference between single-arm and double-arm configurations has been investigated experimentally. Here, we conclude that this measurement benchmarks the applications of magnetic Wollaston prisms in Larmor diffraction and shows in principle that the setup can be used for inelastic phonon line-width measurements. The achievable resolution for Larmor diffraction is comparable to that using Neutron Resonance Spin Echo (NRSE) coils. Furthermore, the use of superconducting materials in the prisms allows high neutron polarization and transmission efficiency to be achieved.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [5] ;  [5] ;  [2] ;  [5] ;  [6] ;  [3] ;  [2] ;  [7] ;  [8] ;  [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Instrument and Source Division; Indiana Univ., Bloomington, IN (United States). Center for Exploration of Energy and Matter and Dept. of Physics
  2. Indiana Univ., Bloomington, IN (United States). Center for Exploration of Energy and Matter and Dept. of Physics
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Quantum Condensed Matter Division
  4. Delft Univ. of Technology (Netherlands). Faculty of Applied Sciences
  5. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Instrument and Source Division
  6. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  7. Max Planck Inst. for Solid State Research, Stuttgart (Germany)
  8. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Quantum Condensed Matter Division; Univ. of Tennessee, Knoxville, TN (United States). Dept. of Physics and Astronomy
Publication Date:
Grant/Contract Number:
AC05-00OR22725; AC02-76SF00515; 1121053
Type:
Accepted Manuscript
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Volume: 7; Journal Issue: 1; Journal ID: ISSN 2045-2322
Publisher:
Nature Publishing Group
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). High Flux Isotope Reactor (HFIR); SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org:
USDOE Office of Science (SC); National Science Foundation (NSF)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; characterization and analytical techniques
OSTI Identifier:
1352771
Alternate Identifier(s):
OSTI ID: 1360954

Li, Fankang, Feng, Hao, Thaler, Alexander N., Parnell, Steven R., Hamilton, William A., Crow, Lowell, Yang, Wencao, Jones, Amy B., Bai, Hongyu, Matsuda, Masaaki, Baxter, David V., Keller, Thomas, Fernandez-Baca, Jaime A., and Pynn, Roger. High resolution neutron Larmor diffraction using superconducting magnetic Wollaston prisms. United States: N. p., Web. doi:10.1038/s41598-017-00740-5.
Li, Fankang, Feng, Hao, Thaler, Alexander N., Parnell, Steven R., Hamilton, William A., Crow, Lowell, Yang, Wencao, Jones, Amy B., Bai, Hongyu, Matsuda, Masaaki, Baxter, David V., Keller, Thomas, Fernandez-Baca, Jaime A., & Pynn, Roger. High resolution neutron Larmor diffraction using superconducting magnetic Wollaston prisms. United States. doi:10.1038/s41598-017-00740-5.
Li, Fankang, Feng, Hao, Thaler, Alexander N., Parnell, Steven R., Hamilton, William A., Crow, Lowell, Yang, Wencao, Jones, Amy B., Bai, Hongyu, Matsuda, Masaaki, Baxter, David V., Keller, Thomas, Fernandez-Baca, Jaime A., and Pynn, Roger. 2017. "High resolution neutron Larmor diffraction using superconducting magnetic Wollaston prisms". United States. doi:10.1038/s41598-017-00740-5. https://www.osti.gov/servlets/purl/1352771.
@article{osti_1352771,
title = {High resolution neutron Larmor diffraction using superconducting magnetic Wollaston prisms},
author = {Li, Fankang and Feng, Hao and Thaler, Alexander N. and Parnell, Steven R. and Hamilton, William A. and Crow, Lowell and Yang, Wencao and Jones, Amy B. and Bai, Hongyu and Matsuda, Masaaki and Baxter, David V. and Keller, Thomas and Fernandez-Baca, Jaime A. and Pynn, Roger},
abstractNote = {The neutron Larmor diffraction technique has been implemented using superconducting magnetic Wollaston prisms in both single-arm and double-arm configurations. Successful measurements of the coefficient of thermal expansion of a single-crystal copper sample demonstrates that the method works as expected. Our experiment involves a new method of tuning by varying the magnetic field configurations in the device and the tuning results agree well with previous measurements. The difference between single-arm and double-arm configurations has been investigated experimentally. Here, we conclude that this measurement benchmarks the applications of magnetic Wollaston prisms in Larmor diffraction and shows in principle that the setup can be used for inelastic phonon line-width measurements. The achievable resolution for Larmor diffraction is comparable to that using Neutron Resonance Spin Echo (NRSE) coils. Furthermore, the use of superconducting materials in the prisms allows high neutron polarization and transmission efficiency to be achieved.},
doi = {10.1038/s41598-017-00740-5},
journal = {Scientific Reports},
number = 1,
volume = 7,
place = {United States},
year = {2017},
month = {4}
}