Physics – Optics
Scientific paper
Sep 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005spie.5962..543o&link_type=abstract
Building European OLED Infrastructure. Edited by Pearsall, Thomas P.; Halls, Jonathan. Proceedings of the SPIE, Volume 5962, p
Physics
Optics
Scientific paper
Hard X-ray telescope by means of optics is one of the key technologies for future X-ray observatory programs. Introducing a telescope to hard X-ray region above 10 keV will improve sensitivity by one or two orders of magnitude. The principle of hard X-ray telescope is a depth-graded multilayer (supermirror) and high throughput, nested thin-foil grazing incidence optics. We have successfully developed a hard X-ray telescope sensitive up to 50 keV for balloon program InFOCuS. Effective area of 50 cm2 at 30 keV and image quality of 2.5 arcmin (HPD) were obtained from ground-based measurement and were also confirmed by in-flight calibration. Recent development achieved an improvement of image quality roughly by a factor of two. Japan's future X-ray satellite program NeXT has been proposed based on our technology.
Ogasaka Yasushi
Shibata Ryo
Tamura Keisuke
Yamashita Koujun
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