Multiband imaging at the diffraction limit using Fresnel x-ray telescopes

Christoph Braig; Peter Predehl

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Multiband imaging at the diffraction limit using Fresnel x-ray telescopes

机译：Multiband imaging at the diffraction limit using Fresnel x-ray telescopes

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摘要

We present a diffractive-refractive x-ray telescope for simultaneous imaging in multiple energy bands. Based on segmented achromatic lenses, the system yields an angular resolution around 1 mas between 5 and 10 keV for a focal distance of a few 10~2 km. The total sensitivity, measured via the bandwidth-integrated effective area, reaches at least 10~3 cm~2 keV. Our arrangement exploits Fresnel lenses used in higher phase shift orders for orderly protection from scattered radiation as well as reduced refractive profiles for an enhanced throughput. The telescope, which has its focal plane detector on a separated spacecraft, may be reoriented to new astrophysical targets on short timescales. Scientific applications are briefly discussed for active galactic nuclei.

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来源
《Optical Engineering》 |2012年第9期|096501-1-096501-23|共23页
作者
Christoph Braig; Peter Predehl;
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作者单位

Friedrich-Schiller-Universitat, Institut fur Angewandte Physik, Max-Wien-Platz 1, 07743 Jena, Germany;

Max-Planck-Institut fur Extraterrestrische Physik, Giessenbachstr. 1, 85748 Garching, Germany;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类计量学;
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Multiband imaging at the diffraction limit using Fresnel x-ray telescopes

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