A lamellar model for the X-ray rocking curves of sagittally bent Laue crystals.

Authors :: Zhong, Z.
Kao, C.C.
Siddons, D.P.
Zhong, H.
Hastings, J.B.
Source :: Acta Crystallographica: Section A (Wiley-Blackwell). Jan2003, Vol. 59 Issue 1, p1. 6p.
Publication Year :: 2003
Abstract: The use of sagittally bent asymmetric Laue crystals in horizontally focusing monochromators for high-energy synchrotron X-rays necessitates simulation of the X-ray reflectivity by such crystals. Based on the theory of the lattice distortion in the diffraction plane of sagittally bent Laue crystals, a lamellar model was developed to predict their rocking curves. The model was experimentally verified by rocking-curve measurements from various reflections on silicon crystals of four representative orientations, sagittally bent to various radii, using X-rays of 67 keV energy. [ABSTRACT FROM AUTHOR]