11 July 1997 Application of polycapillary optics to hard X-ray astronomy
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Abstract
Polycapillary X-ray optics, which is comprised of bundles of tens of thousands to millions of hollow glass capillary tubes, can be used as concentrators of astronomical X-rays for spectroscopic studies. Measurements have been performed of transmission efficiency of straight polycapillary fibers in the range of 10-80 keV. A geometrical optics simulation has been developed which accurately models experimental results and includes the effects of surface roughness and profile error. An optic designed for 8-keV photons has been tested as a concentrator for parallel beam synchrotron radiation. The results, a factor of 65 in intensity gain, are in good agreement with optics simulation. A prototype optic designed for 10-50 keV is currently under construction with a predicted gain of more than 100. Design requirements for higher energy photons are considered. By using a small or position sensitive detector, improvements of two orders of magnitude at 80 keV are expected from the use of this type of collector.
© (1997) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Christine H. Russell, Walter M. Gibson, Mikhail V. Gubarev, F. A. Hofmann, Marshall K. Joy, Carolyn A. MacDonald, Lei Wang, Qi-Fan Xiao, Russell Youngman, "Application of polycapillary optics to hard X-ray astronomy", Proc. SPIE 3113, Grazing Incidence and Multilayer X-Ray Optical Systems, (11 July 1997); doi: 10.1117/12.278868; https://doi.org/10.1117/12.278868
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