Optical properties of X-rays – dynamical diffractionThis Laue centennial article has also been published in Zeitschrift für Kristallographie [Authier (2012). Z. Kristallogr. 227, 36–51].

Figure 8
Ewald's dynamical theory - dispersion surface. Left: general view. After Authier (2001

). Right: close-up view. Reproduced with permission from Ewald (1917

). Copyright (1917) John Wiley & Sons.