T. Salditt et al., NON-SPECULAR X-RAY-SCATTERING FROM THIN-FILMS AND MULTILAYERS WITH SMALL-ANGLE SCATTERING EQUIPMENT, Journal of physics. D, Applied physics, 28(4A), 1995, pp. 236-240
We present measurements of non-specular x-ray scattering from rough in
terfaces at a dedicated small-angle scattering beamline that allows fo
r very low divergence of the incident beam and therefore for high reso
lution close to the specularly reflected beam. A two-dimensional detec
tor is used to measure the non-specular intensity both in and out of t
he plane of reflection. The method is exemplified by an Au single laye
r, an amorphous Nb/Al2O3 multilayer and an epitaxial GaAs/AlAs superla
ttice sample.