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Model calculations for the spin‐echo small‐angle neutron‐scattering correlation function
Author(s) -
Uca Oktay,
Bouwman Wim G.,
Rekveldt M. Theo
Publication year - 2003
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s0021889802020356
Subject(s) - neutron spin echo , small angle neutron scattering , neutron scattering , small angle scattering , correlation function (quantum field theory) , fractal , structure factor , scattering , neutron , function (biology) , physics , range (aeronautics) , statistical physics , spin (aerodynamics) , space (punctuation) , correlation , computational physics , optics , nuclear magnetic resonance , nuclear physics , materials science , quantum mechanics , mathematics , mathematical analysis , geometry , thermodynamics , computer science , dielectric , composite material , biology , operating system , evolutionary biology
Spin‐echo small‐angle neutron scattering (SESANS) is a new kind of SANS technique enabling measurements to be made directly in real space from a range of a few nanometres up to micrometres. In this paper it is shown by calculations on models that SESANS measures correlations directly. Furthermore, the effect of polydispersity and structure factor has been studied. An exact expression for the correlation function has been derived in the case of random systems, such as fractal systems.