NE VII line ratios in the sun

Details NE VII line ratios in the sun NE VII line ratios in the sun

Nov 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...363..315k&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 363, Nov. 1, 1990, p. 315-317. Research supported by SERC.

Astronomy and Astrophysics

Astrophysics

8

Line Spectra, Neon, Solar Flares, Solar Spectra, Electron Density (Concentration), Electron Impact, Electron Transitions, Emission Spectra

Scientific paper

Theoretical Ne VII electron density sensitive emission-line ratios, derived using electron impact excitation rates calculated with the R-matrix code, are presented for R1 = I(561.7 A)/I(465.2 A) and R2 = I(561.4 A)/I(465.2 A). A comparison of these with observational data for solar flares, obtained with the Naval Research Laboratory's S082A spectrograph on board Skylab, reveals excellent agreement between theory and observation, which confirms the usefulness of R1 and R2 as Ne diagnostics for solar flares, as well as providing experimental support for the accuracy of the atomic data adopted in the line ratio calculations.

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