Abstract: Studies of cosmic x-ray sources have suffered from lack of focusing optics in the hard x-ray spectral region (E $GRT 10 keV); in the absence of imaging optics, celestial x rays are masked by the cosmic ray background, which severely degrades the detector sensitivity. There are several possible ways to develop grazing incidence imaging optics for this spectral region; we describe here one approach which utilizes numerous large diameter silicon wafers to form a flat-plate imaging telescope. A prototype imager of this type has been constructed, and we present measurements of surface quality, coalignment accuracy, and imaging ability. !6
展开▼
