Fully numerical procedure for anisotropic small-angle neutron scattering modelling and data evaluation

A numerical approach to the evaluation of small-angle neutron scattering (SANS) data is proposed. The procedure covers interparticle-interference and multiple-scattering effects. The influence of these effects as well as the resolution of a SANS Instrument are discussed. As an example of the use of the procedure for SANS data modelling, two-dimensional scattering curves of cuboidal particles and ordered cubes are presented. Finally, a test of the fitting procedure is performed on measured data for a solution of polystyrene spheres in water.