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Proceedings Paper

Progress in replication of substrates for multilayer coatings
Author(s): Suzanne E. Romaine; John E. Everett; Ricardo J. Bruni; Adrian Ivan; Paul Gorenstein; Mauro Ghigo; Francesco Mazzoleni; Oberto Citterio; Joseph Pedulla
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Paper Abstract

Studies are being carried out to compare the performance of several different separation materials used in the replication process. This report presents the results obtained during the second year of a program which consists of replicating smooth, thin substrates, depositing multilayer coatings upon them, and evaluating their performance. Replication smooth, thin substrates, depositing multilayer coatings upon them, and evaluating their performance. Replication and multilayer coatings are both critically important to the development of focussing hard x- ray telescopes that function up to 100 keV. The activities of the current year include extending the comparison between sputtered amorphous carbon and evaporated gold to include sputtered as well as evaporated gold. The figure of merit being the smoothness of the replica which has a direct effect on the specular reflectivity. These results were obtained with epoxy replication, but they should be applicable to electroformed nickel, the process we expect to use for the ultimate replicated optics.

Paper Details

Date Published: 19 November 1998
PDF: 5 pages
Proc. SPIE 3444, X-Ray Optics, Instruments, and Missions, (19 November 1998); doi: 10.1117/12.331277
Show Author Affiliations
Suzanne E. Romaine, Harvard-Smithsonian Ctr. for Astrophysics and Radcliffe College (United States)
John E. Everett, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Ricardo J. Bruni, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Adrian Ivan, Harvard-Smithsonian Ctr. for Astrophysics and Massachusetts Institute of Technology (United States)
Paul Gorenstein, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Mauro Ghigo, Osservatorio Astronomico di Brera (Italy)
Francesco Mazzoleni, Osservatorio Astronomico di Brera (Italy)
Oberto Citterio, Osservatorio Astronomico di Brera (Italy)
Joseph Pedulla, National Institute of Standards and Technology (United States)


Published in SPIE Proceedings Vol. 3444:
X-Ray Optics, Instruments, and Missions
Richard B. Hoover; Arthur B. C. Walker, Editor(s)

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