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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 φ, while that along B1C1 stays horizontal in the original direction. αH is the glancing angle of the ray along the path A1FS to the sample surface at FS, and αL 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.

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ISSN: 1600-5775
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