Figure 1
Schematic design of the DFCA showing the source of divergent radiation, the two asymmetrically cut crystals and the area detector. The central scattering plane is defined by the source and the common scattering plane of the beam with energy E0. The unit vectors and indicate the normal of the atomic planes and the propagation direction of the X-rays, respectively. l1, l12 and l2 measure the distance between the source and detector along the path of the X-rays with E0 energy in the central plane. |