As shown in Parts II and III, the methods of structural interpretation of small-angle scattering data deal mainly with an ideal, absolutely precise intensity curve, namely, the function I(s). In experiments, however, one determines not this curve but a certain set of points J e(s i ), which contain various distortions. Here it is necessary to take into account statistical noise, measurement-interval termination, scattering by various details of the experimental device and by the solvent, “smearing” of the ideal curve profile as a result of the finite dimensions of the beam and detector, polychromaticity of the radiation, and so on. Therefore, in an experimental data analysis the immediate task is, as a rule, transition from the set J e(s i ) to the function I(s).
KeywordsWeighting Function Data Treatment Statistical Noise Frequency Filter Sampling Theorem
Unable to display preview. Download preview PDF.