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

Journal Article · · Scientific Reports
 [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

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.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). High Flux Isotope Reactor (HFIR)
Sponsoring Organization:
USDOE Office of Science (SC); National Science Foundation (NSF)
Grant/Contract Number:
AC05-00OR22725; AC02-76SF00515
OSTI ID:
1352771
Journal Information:
Scientific Reports, Journal Name: Scientific Reports Journal Issue: 1 Vol. 7; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (6)

Generation and detection of spin-orbit coupled neutron beams text January 2019
Design and performance of a superconducting neutron resonance spin flipper journal January 2020
Generation and detection of spin-orbit coupled neutron beams journal September 2019
Generalized resolution matrix for neutron spin-echo three-axis spectrometers journal May 2018
High-resolution phonon energy shift measurements with the inelastic neutron spin echo technique journal June 2019
Clinical Microscopy: Performance, Maintenance and Laser Safety journal June 2019

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