Figure 1
Bird's eye (a) and side (b) views of the geometry of the simultaneous multiple angle-wavelength dispersive X-ray reflectometer. The crystal is bent horizontally to realise horizontal focusing and then twisted in such a way that the surface normal along the straight line A1D1 is inclined downward by an angle [varphi], while that along B1C1 stays horizontal in the original direction. [alpha]H is the glancing angle of the ray along the path A1FS to the sample surface at FS, and [alpha]L is that for the ray along the path C1FS. The X-ray beam is specularly reflected by a sample placed horizontally at FS, then horizontally diverges directed toward points on the line A3C3 on the detector surface.  [article HTML]