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Figure 6
Spectra of diffracted waves for an incident wave consisting of two mutually coherent plane waves of different wavelengths (shown by thick grey lines) for an infinite distance to the detector (Fraunhofer diffraction, blue line) and the distance to detector L = 1 m (Fresnel diffraction), calculated by equation (22)[link]. Symmetric Bragg reflection 440 from a 20 µm-thick diamond plate, bending radius 10 cm, convex (black line) and concave (red line) bending are compared.

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ISSN: 2053-2733
Volume 76| Part 1| January 2020| Pages 55-69
https://doi.org/10.1107/S2053273319014347
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