Update for BayesApp: a web site for analysis of small‐angle scattering data. (1st August 2014)

• Record Type: Journal Article
• Authors: Hansen, Steen
• Is Part Of: Journal of applied crystallography. Volume 47:Part 4(2014:Aug.)
• Page Start: 1469
• Page End: 1471
• Publication Date: 2014-08-01
• Subjects: small‐angle scattering -- indirect transformation -- web sites -- BayesApp; Crystallography -- Periodicals; 548.05
• DOI: 10.1107/S1600576714013156
• Languages: English
• ISSNs: 0021-8898

Abstract

Abstract : An update for BayesApp, a web site for analysis of small‐angle scattering data, is presented. The indirect transformation of the scattering data now includes an option for a maximum‐entropy constraint in addition to the conventional smoothness constraint. The maximum‐entropy constraint uses an ellipsoid of revolution as a prior, and the dimensions of the ellipsoid as well as the overall noise level of the experimental data are estimated using Bayesian methods. Furthermore, a correction for slit smearing has been added. The web site also includes options for calculation of the scattering intensity from simple models as well as the estimation of structure factors for polydisperse spheres and nonspherical objects of axial ratios between 0.4 and 2.5.