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Relationship between counting modes, absolute noise term and the errors of structure functions in the interpretation of small‐angle X‐ray scattering data
Author(s) -
Lembke U.,
Gerber T.
Publication year - 1985
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/s0021889885009827
Subject(s) - small angle x ray scattering , scattering , noise (video) , small angle scattering , computational physics , optics , physics , interpretation (philosophy) , mathematics , mathematical analysis , computer science , artificial intelligence , image (mathematics) , programming language
The requirements imposed on the magnitude of the noise in a scattering curve in order to minimize the corresponding error in the structure functions are estimated for a given value of the time T in which the scattering curve is recorded. Typical small‐angle X‐ray scattering (SAXS) curves have been used to check how these conditions are fulfilled when different counting modes are applied for the measurement. It is shown that fixed‐time counting is the most practical technique and produces error bands in the structure functions with magnitudes close to the smallest values attainable in SAXS investigations.