Other
Scientific paper
Mar 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988jphys..49..331m&link_type=abstract
(IAU, ESA, CNRS, et al., Colloquium on UV and X-ray Spectroscopy of Astrophysical and Laboratory Plasmas, 102nd, Beaulieu-sur-Me
Other
1
Electron Impact, Emission Spectra, Helium Ions, Line Spectra, Solar X-Rays, Electron Density (Concentration), Solar Flares, Solar Maximum Mission
Scientific paper
Electron impact excitation rates recently calculated by Keenan, McCann and Kingston (1987) for transition in the He-like ions Al XII, Si XIII and S XV are used to derive the electron temperature sensitive emission line ratio and the density sensitive ratio in its low density limit. These ratios are compared with those calculated by other authors and with the values obtained for solar flares using instruments on board the P78-1 and Solar Maximum Mission satellites. In general, it is found that the results resolve discrepancies which currently exist between observation and theory, providing experimental support for the methods and atomic data adopted in the present analysis.
Keenan Francis P.
McCann S. M.
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