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Proceedings Paper

Penning source for calibration of x-ray and EUV optics and spectrometers at wavelengths as short as 50 A
Author(s): Edwin M. Kellogg; Bradford J. Wargelin; Timothy J. Norton; Roger Eng; Jeffery J. Kolodziejczak
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Paper Abstract

We report on the development and evaluation of a redesigned version of the Penning gas discharge source of x-ray and EUV radiation previously described by Finley et al. The most significant new features are the use of stronger permanent magnets and spill-proof quick- disconnect water cooling line fittings. Using aluminum cathodes and Ar discharge gas, and with a 0.5 mm by 5 mm exit aperture on the source, we obtained an absolute flux in the bright Al IV line at 129.73 A of order 5 multiplied by 1011 s-1 sr-1, and of order 5 multiplied by 109 s-1 sr-1 for the Ar I line at 56 A. Detailed spectral analysis of the lines near 56 A is reported. The application of this source to the prelaunch calibration of the AXAF x-ray astronomy observatory is discussed, with emphasis on use of the narrow line at 56 A for calibrating the spectral resolution of the AXAF transmission grating spectrometers.

Paper Details

Date Published: 20 June 1995
PDF: 2 pages
Proc. SPIE 2515, X-Ray and Extreme Ultraviolet Optics, (20 June 1995); doi: 10.1117/12.212607
Show Author Affiliations
Edwin M. Kellogg, Harvard-Smithsonian Astrophysical Observatory (United States)
Bradford J. Wargelin, Harvard-Smithsonian Astrophysical Observatory (United States)
Timothy J. Norton, Harvard-Smithsonian Astrophysical Observatory (United States)
Roger Eng, Harvard-Smithsonian Astrophysical Observatory (United States)
Jeffery J. Kolodziejczak, NASA Marshall Space Flight Ctr. (United States)

Published in SPIE Proceedings Vol. 2515:
X-Ray and Extreme Ultraviolet Optics
Richard B. Hoover; Arthur B. C. Walker Jr., Editor(s)

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