Spin-echo resolved grazing incidence scattering (SERGIS) of cold neutrons

G. P. Felcher, S. G.E. Te Velthuis, J. Major, H. Dosch, C. Anderson, K. Habicht, T. Keller

Research output: Contribution to journalConference article

21 Citations (Scopus)

Abstract

The conceptual design of a new instrument is presented, which makes use of the spin echo technique to analyze the scattering angle of neutrons impinging upon a rough or corrugated surface at grazing incidence. In a grazing incidence geometry the roughness of the surface and of submersed interfaces give rise to a neutron scattering pattern at angles well resolved from that of specular reflection for corrugation lengths up to several microns, but only in the plane of specular reflection. In contrast, scattering caused by corrugations of comparable length perpendicular to the reflection plane is limited to angles that can be separated only with an extreme tightening of the instrumental resolution. However this scattering can be well resolved by spin-echo methods for polarized neutrons. Results from scattering in and out of the reflection plane provide complementary information on the structure of the roughness and its location in a system with complex layering. This spin-echo technique may also distinguish static from time-dependent roughness.

Original languageEnglish
Pages (from-to)164-173
Number of pages10
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume4785
DOIs
Publication statusPublished - Dec 1 2002
EventAdvances in Neutron Scattering Instrumentation - Seattle, WA, United States
Duration: Jul 7 2002Jul 8 2002

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Keywords

  • Neutron reflectivity
  • Spin-echo

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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