The determination of electron densities in the solar atmosphere from the 1718.56 A/1486.51 A emission-line ratio in N IV

Details The determination of electron densities in the solar atmosphere from the 1718.56 A/1486.51 A emission-line ratio in N IV The determination of electron densities in the solar atmosphere from the 1718.56 A/1486.51 A emission-line ratio in N IV

Sep 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994apj...432..806k&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 432, no. 2, p. 806-808

Astronomy and Astrophysics

Astrophysics

4

Electron Density (Concentration), Emission Spectra, Nitrogen Plasma, Solar Atmosphere, Solar Wind, Line Spectra, Solar Activity, Solar Corona

Scientific paper

The theoretical electron density sensitive emission-line ratio R = I(1718.56 a)/I(1486.51 A) in N IV is presented for a range of Ne(approximately equals 1010 - 1012/cu cm) applicable to higher density solar plasmas, such as active regions. A comparison of these calculations with the observed values of R of several solar features obtained with the Naval Research Laboratory's S082B spectrograph on board Skylab reveals general agreement between theory and observation at pointings just above the limb, where line blends with N IV 1718.56 A should be insignificant, which provides experimental support for the accuracy of the line ratio calculations.

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