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Quantitative treatment for extracting coherent elastic scattering from X‐ray scattering experiments
Author(s) -
Laaziri Khalid,
Robertson J. L.,
Roorda S.,
Chicoine M.,
Kycia S.,
Wang J.,
Moss S. C.
Publication year - 1999
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/s0021889898014071
Subject(s) - scattering , inelastic scattering , elastic scattering , physics , compton scattering , biological small angle scattering , impulse (physics) , quasielastic scattering , mott scattering , scattering length , optics , scattering theory , computational physics , x ray raman scattering , small angle neutron scattering , atomic physics , classical mechanics , neutron scattering
A fitting procedure for separating the inelastic and elastic contributions to the total scattering in diffuse‐scattering experiments at high energy using energy‐dispersive X‐ray techniques is presented. An asymmetric peak function is used to model the elastic peak. The inelastic scattering peak is modeled using a theoretical Compton profile, calculated using the impulse approximation (Hartree–Fock wave functions were used), convoluted with the detector resolution. This procedure, which requires only two free parameters, is shown to be extremely effective in extracting the integrated elastic intensity of coherent scattering at each wave vector, even at low scattering angles where the Compton scattering is not well resolved.