X-Ray Focusing With Lobster-Eye Optics: A Comparison Of Theory With Experiment

We report an experimental investigation and comparison with simulation of the x-ray focusing of a flat, square profile microchannel plate. We use x rays with an energy of similar to 1.5 keV from a laser-produced plasma. The images were recorded with x-ray film. We find the focal structure to be consistent with theoretical expectations. The angular resolution of the focus is 0.96 mrad, which is a major improvement over previous results. The measured peak intensity gain is 27 +/- 4, which is similar to 33% of that for a perfect optic. (C) 1996 Optical Society of Americ