Measuring scattering angles with neutron spin echo

Michael R. Fitzsimmons, Helmut Fritzsche, Marita Gierlings, Janos Major, Roger Pynn

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We report results of experiments designed to test the use of thin magnetic films as elements of a neutron spin echo (NSE) apparatus for determining neutron scattering angles. We show that 10-μm thin films of Permalloy (Ni 0.8 Fe0.2) electrodeposited on silicon wafers function well as π/2 spin rotators. 30μm thick films of the same material used as precession fields in the NSE set-up allow the neutron scattering angle to be determined with a resolution of about 0.05°. We show that, even when the NSE angular resolution is comparable to the angular divergence of neutron beams used in a reflectometry experiment, the use of NSE aids in the separation of specular and diffuse scattering.

Original languageEnglish
Pages (from-to)10-15
Number of pages6
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume529
Issue number1-3 SPEC. ISS.
DOIs
Publication statusPublished - Aug 21 2004

Keywords

  • Diffuse scattering
  • Larmor precession
  • Neutron reflection
  • Neutron spin echo
  • Surface roughness

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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