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Proceedings Paper

Calibration of a zone plate for an EUV solar irradiance monitor
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Paper Abstract

A 4 mm diameter zone plate was calibrated in the 7 nm to 18.5 nm wavelength range using synchrotron radiation. The efficiency in the focused 1st order was measured using the scanning monochromator at the Naval Research Laboratory beamline X24C at the National Synchrotron Light Source. The measured efficiencies were compared to efficiencies calculated by accounting for the partial transmittance through the molybdenum zone plate rings and the resulting phase enhancement of the efficiencies. Accurate absolute efficiency calibrations enable the use of zone plates in EUV solar irradiance monitors having excellent stability against contamination and oxidation.

Paper Details

Date Published: 23 September 2009
PDF: 6 pages
Proc. SPIE 7438, Solar Physics and Space Weather Instrumentation III, 743811 (23 September 2009); doi: 10.1117/12.826038
Show Author Affiliations
John Seely, Naval Research Lab. (United States)
Glenn Holland, Global Strategies Group North America, Inc. (United States)
Michael Kowalski, Naval Research Lab. (United States)
Benjawan Kjornrattanawanich, Universities Space Research Association, Brookhaven National Lab. (United States)
James C. Bremer, Research Support Instruments, Inc. (United States)
Yan Feng, Xradia, Inc. (United States)

Published in SPIE Proceedings Vol. 7438:
Solar Physics and Space Weather Instrumentation III
Silvano Fineschi; Judy A. Fennelly, Editor(s)

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