The rocking curve of crystal reflection represents the mass of the lattice. This can be clicked for quick inspection or combined with the Mapping tool to obtain a quality map.
Measuring the sway curve means taking measurements in Theta scan mode, which requires a goniometer. A double crystal is introduced into the main beam path to reduce spectral width and divergence. However, its side effect is a strong decrease in intensity. Therefore, the bicrystal is installed on a stretchable bracket so that it can be "opened" or "closed".
Rocking curves of a 6H SiC crystal measured along a line on spots of 8 mm distance
