Bent perfect crystals as X-ray focusing polychromators in symmetric Laue geometry

Guigay, J.-P.; Ferrero, C.; Bhattacharyya, D.; Mathon, O.; Pascarelli, S.

doi:10.1107/S0108767312044601

Acta Crystallographica Section A
Acta Crystallographica
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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 α = 0.67.

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ISSN: 2053-2733

Volume 69| Part 1| January 2013| Pages 91-97

https://doi.org/10.1107/S0108767312044601

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