6 October 2011 Improved release coatings for electroformed x-ray optics
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Abstract
X-ray astronomy grazing incidence telescopes use the principle of nested shells to maximize the collecting area. Some of the more recent missions, such as XMM-Newton [1], have used an electroformed nickel replication (ENR) process [2] to fabricate the mirror shells. Upcoming missions, such as Spectrum-Röntgen-Gamma [3] and Focusing Optics X-ray Solar Imager [4], also use the electroforming process to fabricate nested shell grazing incidence X-ray telescopes. We present recent results on fabrication of replicas with multilayer coatings from Wolter-1 mandrels using a new hardcoat release material to simplify and improve this electroforming process.
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S. Romaine, J. Boike, R. Bruni, D. Engelhaupt, P. Gorenstein, B. Ramsey, "Improved release coatings for electroformed x-ray optics", Proc. SPIE 8147, Optics for EUV, X-Ray, and Gamma-Ray Astronomy V, 81470W (6 October 2011); doi: 10.1117/12.896000; https://doi.org/10.1117/12.896000
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