Physics
Scientific paper
Jul 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978ssrv...22..191f&link_type=abstract
(EGAS, Meeting, Munich, West Germany, July 11-14, 1978.) Space Science Reviews, vol. 22, July 1978, p. 191-212.
Physics
11
Line Spectra, Plasma Diagnostics, Solar Atmosphere, Solar Spectra, Electron Density Profiles, Solar Temperature, Ultraviolet Spectra
Scientific paper
The importance of the spectral range from about 80 to 800 A for determining physical conditions in different regions of the solar atmosphere is discussed. Examples are given of line ratios that may be used to determine electron densities in quiet-sun regions, active regions, and flares. The possibility of determining electron temperatures from line ratios in the EUV is considered. It is shown that profiles, as well as intensities, of spectral lines must be obtained for a proper interpretation of the spectra. Approximate parameters are provided for a solar grazing-incidence spectrograph suitable for the study of the 80-800-A wavelength region.
Behring William E.
Doschek George A.
Feldman Uri
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