Focusing and Imaging Properties of a Nickel Phase Zone Plate

A nickel phase zone plate made for a wavelength of 1.76 nm was experimentally examined in terms of the X-ray focusing and imaging properties. The focusing efficiency of the phase zone plate was 1.6 times that of an ordinary Fresnel zone plate. Images of a copper mesh #2000 and a Fresnel zone plate at a resolution of 1.2 pm were made with the phase zone plate.