On coronal density measurements using a NE IX X-ray line ratio

Details On coronal density measurements using a NE IX X-ray line ratio On coronal density measurements using a NE IX X-ray line ratio

Sep 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...296..294m&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 296, Sept. 1, 1985, p. 294-296. Research supported by the Aerospace Corp.

Astronomy and Astrophysics

Astrophysics

13

Density Measurement, Neon, Solar Corona, Solar Spectra, Solar X-Rays, Electron Density (Concentration), Forbidden Transitions, Line Spectra, Solar Flares, Solar Maximum Mission

Scientific paper

The ratio R of the 1s2 1S0-1s2s 3S1 forbidden line flux to the 1s2 1S0-1s2p 3P intercombination line flux for Ne IX is density sensitive. The analysis of published high-resolution spectra obtained by the X-Ray Polychromator on the SMM leads to the suggestion that, at high temperatures, the intercombination line is blended with an unidentified line, probably arising from Fe XIX. This would lead to erroneous determinations of the electron density in solar flares.

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