X-ray reflecto-interferometer based on compound refractive lenses

An X-ray amplitude-splitting interferometer based on compound refractive lenses, which operates in the reflection mode, is proposed and realized. The idea of a reflecto-interferometer is to use a very simplified experimental setup where a focused X-ray beam reflected from parallel flat surfaces creates an interference pattern in a wide angular range. The functional capabilities of the interferometer were experimentally tested at the European Synchrotron Radiation Facility (ESRF) ID06 beamline in the X-ray energy range from 10   keV to 15   keV. The main features of the proposed approach, high spatial and temporal resolution, were demonstrated experimentally. The reflections from free-standing Si3N4 membranes, gold and resist layers were studied. Experimentally recorded interferograms are in good agreement with our simulations. The main advantages and future possible applications of the reflecto-interferometer are discussed.

Source: Journal of Synchrotron Radiation - August 11, 2019 Category: Physics Authors: Lyatun, S. Zverev, D. Ershov, P. Lyatun, I. Konovalov, O. Snigireva, I. Snigirev, A. Tags: spatial resolution temporal resolution interferograms reflecto-interferometers compound refractive lenses X-ray interferometry research papers Source Type: research