Journal of Applied Crystallography

Volume 40, Part 5 (October 2007)

short communications

J. Appl. Cryst. (2007). 40, 959-963 [ doi:10.1107/S0021889807033377 ]

Ewald construction and resolution function for rocking-curve small-angle neutron scattering experiments

N. Daniilidis, I. Dimitrov and X. S. Ling

Abstract: A geometrical Ewald construction for small-angle neutron scattering experiments from line-like objects with a preferential orientation of the lines, such as flux-line lattices in type-II superconductors, is described. The Ewald construction offers a straightforward way to interpret rocking-curve experiments. It allows calculation of the resolution function in rocking-curve measurements. The resolution function for a given instrumental geometry can be readily computed by performing two numerical integrations.

Keywords: small-angle neutron scattering; Ewald construction; resolution function.