Improvements of design scheme and fabrication of the hard x-ray supermirror with broad bandwidth and flattop response

Youwei Yao; Hideyo Kunieda

doi:10.1117/12.2023758

26 September 2013 Improvements of design scheme and fabrication of the hard x-ray supermirror with broad bandwidth and flattop response

Youwei Yao, Hideyo Kunieda

Author Affiliations +

Proceedings Volume 8861, Optics for EUV, X-Ray, and Gamma-Ray Astronomy VI; 886114 (2013) https://doi.org/10.1117/12.2023758
Event: SPIE Optical Engineering + Applications, 2013, San Diego, California, United States

Abstract

We present our design scheme and fabrication of non-periodic multilayer with broad angular or energy bandwidth to demonstrate the potential application of such kind of multilayer for the hard X-ray telescopes. By using a proper optimization process, a non-periodic multilayer with boxcar angular response has been successfully designed. Such structure may provide 16% reflectivity with grazing angle from 1.0 to 1.5deg at energy point of 8.05keV. We also fabricated this structure by using our DC magnetron sputtering machine and tested it in our X-ray measurement system. The result shows a flat and smooth boxcar response in target band with standard deviation of 0.76%, which is convincing that such designing and fabrication processes we established can be applied to the supermirror with a flat boxcar response against the X-ray energy.

Citation Download Citation

Youwei Yao and Hideyo Kunieda "Improvements of design scheme and fabrication of the hard x-ray supermirror with broad bandwidth and flattop response", Proc. SPIE 8861, Optics for EUV, X-Ray, and Gamma-Ray Astronomy VI, 886114 (26 September 2013); https://doi.org/10.1117/12.2023758

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