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Effect of finite spatial coherence length on small‐angle scattering
Author(s) -
Shinohara Yuya,
Amemiya Yoshiyuki
Publication year - 2015
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/s160057671501715x
Subject(s) - scattering , reciprocal lattice , optics , small angle scattering , physics , fourier transform , diffraction , wide angle x ray scattering , biological small angle scattering , coherence (philosophical gambling strategy) , context (archaeology) , scattering length , ptychography , forward scatter , computational physics , small angle neutron scattering , neutron scattering , quantum mechanics , paleontology , biology
This study shows that forward scattering at the origin of reciprocal space contributes to the scattering intensity profiles of ultra‐small‐angle scattering. The forward scattering corresponds to a Fourier transform of the X‐ray coherent volume on a sample. This contribution is usually ignored in the study of small‐angle scattering, while it is fully considered in the fields of X‐ray imaging, such as coherent X‐ray diffraction imaging and X‐ray ptychography. This effect is explicitly illustrated in the context of small‐angle scattering, and the effect of a finite spatial coherence length on small‐angle scattering is discussed.