Premium
SAS from inhomogeneous particles with more than one domain of scattering density and arbitrary shape
Author(s) -
Spinozzi F.,
Carsughi F.,
Mariani P.,
Teixeira C.V.,
Amaral L. Q.
Publication year - 2000
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/s0021889800099908
Subject(s) - scattering , prolate spheroid , ellipsoid , monte carlo method , fourier transform , particle (ecology) , micelle , domain (mathematical analysis) , dispersity , physics , small angle scattering , work (physics) , molecular physics , optics , materials science , computational physics , chemistry , classical mechanics , mathematics , mathematical analysis , quantum mechanics , polymer chemistry , statistics , oceanography , astronomy , aqueous solution , geology
The Small Angle Scattering from inhomogeneous particles is very important in the investigation of biological systems, where the scattering objects might be formed by many domains. For these systems, the scattering intensity, as well as its Fourier transform, are written as a sum of different contributions. In this work, for the simple case of two domains, the form factors of different scattering particle shapes, such as the oblate, prolate and biaxial ellipsoids, spherocylinder and disks were calculated by using a Monte Carlo method. Finally, SAS data of sodium lauryl sulfate micelles in water were analysed by using a model that accounts for polydispersity and micelles of different shape.