On the ionization equilibrium balance

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