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Figure 7
Spectra of the waves incident on (a)–(d) diamond or (e) a silicon plate of thickness D = 20 µm bent to a radius of R = 10 cm (thick grey lines) and spectra of the diffracted waves in the Fraunhofer diffraction case (thin black or blue lines). The incident beam width is w = 500 µm (a), (c)–(e) or 50 µm (b). The pulse duration is 10 fs (a), (b) and the undulator length is 75 m, or the pulse duration is 42 fs (c)–(e) and the undulator length is 105 m. The spectrum of the incident wave is convoluted, according to equation (17)[link], with the scattering amplitude given by equations (18)[link] for (a), (c)–(e) or (43)[link] for (b).

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