Figure 4
Calculated intensity curves for a bent Si 111 crystal, energy = 20 keV, crystal thickness = 200 µm, p = 29 700 mm, [\theta_{\rm B} = 5.67^\circ], [{\chi _h}{\chi _{\overline h}} =] 1.684×10 - 12 + i 1.666 ×10- 14, q0 = 2997 mm. (a) Intensity at the symmetry centre versus q showing the intensity maximum at q = 500 mm, (b) intensity profiles for q = 500 mm (solid curve) and for q = q0/4 = 750 mm (dashed curve). Note that [alpha] = 0.67.  [article HTML]

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