COMBINATION OF X-RAY FOCUSSING MIRRORS IN AN X-RAY MICROSCOPE

Abstract

The paper contains a theoretical study of combinations of spherical crystal reflectors which can give X-ray images similar to those in an optical microscope. The only possible combination is found to be that in which both the mirrors are concave and both have the same radius of curvature, so that the two mirrors form parts of the same spherical surface. Under these conditions, the Bragg relation is satisfied at both mirrors for any number of multiple reflections. By making use of N reflections, the optical path of the "microscope" for given magnification can be rednced to of that required with only one reflection.