Focusing X-Rays with Curved Multiplate Crystal Cavity

Figure 4

(a) The $\mathrm{\Delta }\phi$ scan at $\mathrm{\Delta }\theta =\mathrm{\hspace{0.17em}\hspace{0.17em}}0$ of the (12 4 0) back diffraction for the crystal device No. 1. (b) The beam sizes of the transmitted beam through the crystal device No. 1 with (black dots) and without back diffraction (gray dots) versus the distance from the exit end of the crystal device.

(a)

(b)