Fresnel zone plate and X-ray microscope using the Fresnel zone plate

摘要

To provide a Fresnel zone plate having a composite irradiation function capable of improving the resolution even when the width of the outermost opaque band cannot be reduced, and an X-ray microscope using the Fresnel zone plate. In the Fresnel zone plate 1 having a composite irradiation function according to the present invention, an opaque band 3 and a transparent band 4 are alternately arranged concentrically from a center toward a radial direction on a flat transparent substrate 2. The transmission window 7 is formed so that a part of the plane wave vertically irradiated on the upper surface directly enters the sample 6 disposed below the Fresnel zone plate 1 without being scattered. [Selection] Figure 2