High resolution monochromatic X-ray imaging system based on spherically bent crystals

Abstract

We have developed a new X-ray imaging system based on spherically curved crystals. It is designed and used for diagnostics of targets ablatively accelerated by the Nike KrF laser [1,2]. The imaging system is used for plasma diagnostics of the main target and for characterization of potential backlighters. A spherically curved quartz crystal (2d=6.687 Å, R=200 mm) is used to produce monochromatic backlit images with the He-like Si resonance line (1865 eV) as the source of radiation. The spatial resolution of the X-ray optical system is 3–4 μm. Time resolved backlit monochromatic images of CH planar targets driven by the Nike facility have been obtained with 6–7 μm spatial resolution.