Figure 1
Schematic diagrams of monolithic channel-cut crystals with two reflecting crystal plates P1 and P2. Parallel lines in P1 and P2 indicate Bragg-reflecting atomic planes. (a) The standard two-plate channel-cut configuration. (b) The design discussed here, featuring a thin crystal membrane in a drumhead structure on plate P1. The membrane thickness is sufficient for high Bragg reflectivity in a narrow Bragg-reflection bandwidth and high transmissivity of the out-of-band X-rays. |