On the ionization equilibrium balance

Details On the ionization equilibrium balance On the ionization equilibrium balance

Mar 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...228l..89v&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 228, Mar. 1, 1979, p. L89-L92.

Astronomy and Astrophysics

Astrophysics

34

Abundance, Atmospheric Ionization, Electron-Ion Recombination, Solar Corona, Stellar Atmospheres, Stellar Coronas, Atomic Energy Levels, Far Ultraviolet Radiation, Gas Ionization, Ionic Reactions, Stellar Models, Ultraviolet Spectra

Scientific paper

Ionization equilibrium for the most astrophysically abundant elements are calculated using multilevel atomic models for several stages of ionization. It is found that the relative abundance of the lithium-, beryllium-, and boron-like ions at electron densities as low as 1 million per cu cm is density-dependent. Because of this dependence, the intensity of lines arising from ions of the Li, Be, and B isoelectronic sequences are density-sensitive. The general implications of these results as applied to solar and stellar atmospheric models, coronal abundances, and spectroscopic diagnostic techniques are discussed.

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