SURFACES & INTERFACES TEAM:

NEUTRON REFLECTOMETRY

 
Geometry of specular reflectivity
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Reflectometry uses neutrons scattered at grazing angles as as probe of depth-dependent composition and in-plane correlations in flat samples.  By using a spin-polarized beam, neutron reflectivity is sensitive to the magnetic, as well as the nuclear composition of samples.  Examples of materials studied include magnetic nanostructures, biological membranes, and polymer films.  The NCNR has three reflectometers, each specially configured for different types of research.

  1. •  NG-1 Polarized Beam Reflectometer (polarized beam capability)

  2. •  ANDR / MAGIK (equipped with a 2-dimensional position sensitive detector)

  3. •  NG-7 Horizontal Geometry Reflectometer (used for liquid samples)

Technique & Theory Neutron Reflectivity Formalism Polarized Neutron Reflectometry Specular & Off-specular Summer School Material 3He Spin Analyzerhttp://www.ncnr.nist.gov/instruments/ng1refl/Fitz.pdfhttp://www.ncnr.nist.gov/programs/reflect/measurements/reflweb1.pdfhttp://www.ncnr.nist.gov/summerschool/ss08/materials.htmlhttp://www.ncnr.nist.gov/programs/reflect/measurements/RSI03256.pdfhttp://www.ncnr.nist.gov/programs/reflect/NR_article/index.htmlshapeimage_2_link_0shapeimage_2_link_1shapeimage_2_link_2shapeimage_2_link_3

Team Members

Chuck Majkrzak, team leader

Data Analysis Software Scattering Length Density Calculator Direct Inversionhttp://www.ncnr.nist.gov/programs/reflect/data_reduction/software/index.htmlhttp://www.ncnr.nist.gov/resources/sldcalc.htmlhttp://www.ncnr.nist.gov/programs/reflect/data_reduction/nr.htmlhttp://www.ncnr.nist.gov/programs/reflect/NR_article/index.htmlshapeimage_3_link_0shapeimage_3_link_1shapeimage_3_link_2