The basic elements of Bragg-Fresnel multilayer optics are multilayer g
ratings. In this paper, the fabrication process for the simplest Bragg
-Fresnel multilayer optics is given; the diffraction measurements at 8
-keV x rays of multilayer gratings are presented; and the measurement
results in the diffraction spectrum are analyzed and discussed in deta
il. (C) 1996 Society of Photo-Optical Instrumentation Engineers.