The potential for plasma diagnostics from stellar extreme-ultraviolet observations

A description of the lines from the most abundant ions in the EUV spectrum in the range 50-500 A that have special diagnostic significance is presented. These lines are from plasmas in the temperature range from 10 exp 5 to 10 exp 7 K. Their utility for determining temperature, density, and abundanc...

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Bibliographic Details
Published in:The Astrophysical journal. Supplement series 1992-07, Vol.81 (1 Ju), p.387
Main Authors: Feldman, U., Mandelbaum, P., Seely, J. F., Doschek, G. A., Gursky, H.
Format: Article
Language:English
Subjects:
Astrophysics
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Summary:A description of the lines from the most abundant ions in the EUV spectrum in the range 50-500 A that have special diagnostic significance is presented. These lines are from plasmas in the temperature range from 10 exp 5 to 10 exp 7 K. Their utility for determining temperature, density, and abundances is demonstrated. An objective grating spectrometer, based on the Skylab slitless spectrograph, for making celestial observations in the EUV spectral region with high spectral resolution is also described. Such an instrument, if equipped with a multilayer grating, can achieve efficiencies over limited EUV wavelength ranges that rival much larger telescope-spectrometer instruments for the observation of stars and other celestial objects.
ISSN:0067-0049
1538-4365
DOI:10.1086/191698