A posteriori determination of the useful data range for small-angle scattering experiments on dilute monodisperse systems.

ABSTRACT: Small-angle X-ray and neutron scattering (SAXS and SANS) experiments on solutions provide rapidly decaying scattering curves, often with a poor signal-to-noise ratio, especially at higher angles. On modern instruments, the noise is partially compensated for by oversampling, thanks to the fact that the angular increment in the data is small compared with that needed to describe adequately the local behaviour and features of the scattering curve. Given a (noisy) experimental data set, an important question arises as to which part of the data still contains useful information and should be taken into account for the interpretation and model building. Here, it is demonstrated that, for monodisperse systems, the useful experimental data range is defined by the number of meaningful Shannon chann

SUBMITTER: Konarev PV 

PROVIDER: S-EPMC4420545 | biostudies-literature | 2015 May

REPOSITORIES: biostudies-literature