Application of polycapillary optics to hard x-ray astronomy

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

doi:10.1117/12.278868

11 July 1997 Application of polycapillary optics to hard X-ray astronomy

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

Author Affiliations +

Proceedings Volume 3113, Grazing Incidence and Multilayer X-Ray Optical Systems; (1997) https://doi.org/10.1117/12.278868
Event: Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States

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.

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Christine H. Russell, Walter M. Gibson, Mikhail V. Gubarev, F. A. Hofmann, Marshall K. Joy, Carolyn A. MacDonald, Lei Wang, Qi-Fan Xiao, and 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); https://doi.org/10.1117/12.278868

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