Phase-space matching between bent Laue and flat Bragg crystals

Through phase-space analysis of Dumond diagrams for a flat Bragg crystal, a single bent Laue crystal and a monochromator consisting of double-bent Laue crystals, this work shows that it is possible to match the flat Bragg crystal to both the single-crystal and double-crystal Laue monochromators. The matched system has the advantage that the phase space of the bent crystal's output beam is much larger than that of the flat crystal, making the combined system stable. Here it is suggested that such a matched system can be used at synchrotron facilities to realize X-ray dark-field imaging, analyzer-based imaging and diffraction-enhanced imaging at beamlines using double-Laue monochromators.

Source: Journal of Synchrotron Radiation - October 22, 2019 Category: Physics Authors: Zhong, Z. Hasnah, M. Broadbent, A. Dooryhee, E. Lucas, M. Tags: bent Laue crystals Dumond diagram phase-contrast imaging analyser-based imaging diffraction-enhanced imaging monochromator analyzers phase space high-energy X-rays research papers Source Type: research