Using the singular value decomposition to extract 2D correlation functions from scattering patterns
Data Analysis, Statistics and Probability
2019-09-11 v2
Abstract
We apply the truncated singular value decomposition (SVD) to extract the underlying 2D correlation functions from small-angle scattering patterns. We test the approach by transforming the simulated data of ellipsoidal particles and show that also in case of anisotropic patterns (i.e. aligned ellipsoids) the derived correlation functions correspond to the theoretically predicted profiles. Furthermore, we use the truncated SVD to analyze the small-angle x-ray scattering patterns of colloidal dispersions of hematite spindles and magnetotactic bacteria in presence of magnetic fields, to verify that this approach can be applied to extract model-free the scattering profiles of anisotropic scatterers from noisy data.
Cite
@article{arxiv.1903.10802,
title = {Using the singular value decomposition to extract 2D correlation functions from scattering patterns},
author = {Philipp Bender and Dominika Zákutná and Sabrina Disch and Lourdes Marcano and Diego Alba Venero and Dirk Honecker},
journal= {arXiv preprint arXiv:1903.10802},
year = {2019}
}
Comments
14 pages, 4 figures