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Proceedings Paper

SiC/Mg multilayer coatings for SCORE coronagraph: long term stability analysis
Author(s): Maria Guglielmina Pelizzo; Silvano Fineschi; Paola Zuppella; Alain Jody Corso; David L. Windt; Piergiorgio Nicolosi
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Paper Abstract

SiC/Mg multilayers have been used as coatings of the Sounding-rocket CORonagraphic Experiment (SCORE) telescope mirrors launched during the NASA HERSCHEL program. This materials couple has been largely studied by researchers since it provides higher performances than a standard Mo/Si multilayer; the SCORE mirrors show in fact a peak reflectance of around 40% at HeII 30.4 nm. Nevertheless, long term stability of this coating is an open problem. A study on the aging and stability of this multilayer has been carried on. SiC/Mg multilayer samples characterized by different structural parameters have been deposited. They have been measured just after deposition and four years later to verify degradation based on natural aging. Experimental results and analysis are presented.

Paper Details

Date Published: 7 October 2011
PDF: 7 pages
Proc. SPIE 8148, Solar Physics and Space Weather Instrumentation IV, 81480M (7 October 2011); doi: 10.1117/12.898223
Show Author Affiliations
Maria Guglielmina Pelizzo, CNR IFN LUXOR Lab. (Italy)
Univ. degli Studi di Padova (Italy)
Silvano Fineschi, INAF - Osservatorio Astronomico di Torino (Italy)
Paola Zuppella, CNR IFN LUXOR Lab. (Italy)
Univ. degli Studi di Padova (Italy)
Alain Jody Corso, CNR IFN LUXOR Lab. (Italy)
Univ. degli Studi di Padova (Italy)
David L. Windt, Reflective X-Ray Optics LLC (United States)
Piergiorgio Nicolosi, CNR IFN LUXOR Lab. (Italy)
Univ. degli Studi di Padova (Italy)


Published in SPIE Proceedings Vol. 8148:
Solar Physics and Space Weather Instrumentation IV
Silvano Fineschi; Judy Fennelly, Editor(s)

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