Penning source for calibration of x-ray and EUV optics and spectrometers at wavelengths as short as 50 A

Edwin M. Kellogg; Bradford J. Wargelin; Timothy J. Norton; Roger Eng; Jeffery J. Kolodziejczak

doi:10.1117/12.212607

20 June 1995 Penning source for calibration of x-ray and EUV optics and spectrometers at wavelengths as short as 50 Å

Edwin M. Kellogg, Bradford J. Wargelin, Timothy J. Norton, Roger Eng, Jeffery J. Kolodziejczak

Proceedings Volume 2515, X-Ray and Extreme Ultraviolet Optics; (1995) https://doi.org/10.1117/12.212607
Event: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, 1995, San Diego, CA, United States

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.

Citation Download Citation

Edwin M. Kellogg, Bradford J. Wargelin, Timothy J. Norton, Roger Eng, and Jeffery J. Kolodziejczak "Penning source for calibration of x-ray and EUV optics and spectrometers at wavelengths as short as 50 Å", Proc. SPIE 2515, X-Ray and Extreme Ultraviolet Optics, (20 June 1995); https://doi.org/10.1117/12.212607

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