Differential deposition to correct surface figure deviations in astronomical grazing-incidence x-ray optics

Kiranmayee Kilaru; Brian D. Ramsey; Mikhail V. Gubarev; Jessica A. Gaskin; Stephen L. O'dell; William Zhang

doi:10.1117/12.895939

11 October 2011 Differential deposition to correct surface figure deviations in astronomical grazing-incidence x-ray optics

Kiranmayee Kilaru, Brian D. Ramsey, Mikhail V. Gubarev, Jessica A. Gaskin, Stephen L. O'dell, William Zhang

Author Affiliations +

Proceedings Volume 8147, Optics for EUV, X-Ray, and Gamma-Ray Astronomy V; 81470X (2011) https://doi.org/10.1117/12.895939
Event: SPIE Optical Engineering + Applications, 2011, San Diego, California, United States

Abstract

A coating technique is being developed to correct the surface figure deviations in grazing-incidence X-ray optics. These optics are typically designed to have precise conic profiles, and any deviation in this profile, as a result of fabrication, results in a degradation of the imaging performance. To correct the mirror profiles, physical vapor deposition has been utilized to selectively deposit a filler material inside the mirror shell. The technique, termed differential deposition, has been implemented as a proof of concept on miniature X-ray optics developed at MSFC for medical-imaging applications. The technique is now being transferred to larger grazing-incidence optics suitable for astronomy.

Citation Download Citation

Kiranmayee Kilaru, Brian D. Ramsey, Mikhail V. Gubarev, Jessica A. Gaskin, Stephen L. O'dell, and William Zhang "Differential deposition to correct surface figure deviations in astronomical grazing-incidence x-ray optics", Proc. SPIE 8147, Optics for EUV, X-Ray, and Gamma-Ray Astronomy V, 81470X (11 October 2011); https://doi.org/10.1117/12.895939

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