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Density dependence of solar emission lines of oxygen-like ions

โœ Scribed by P. K. Raju; B. N. Dwivedi

Publisher
Springer
Year
1978
Tongue
English
Weight
423 KB
Volume
60
Category
Article
ISSN
0038-0938

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โœฆ Synopsis

Assuming steady state conditions, the occupation of 9 levels of oxygen-like ions: Ne nI, Mg v, Si vii, S IX, and Ar xI have been computed as a function of electron density and temperature. The following physical processes have been considered: collisional excitations and spontaneous radiative de-excitations for permitted and intercombination transitions; collisional excitations and de-excitations, photo-excitations and spontaneous radiative transitions among the five levels of the ground term. This study indicates that line intensity ratios for oxygen-like ions can be used as a diagnostic in the determination of these two parameters of the solar plasma.

๐Ÿ“œ SIMILAR VOLUMES

Density dependence of solar emission lin
Density dependence of solar emission lines of boron-like ions
โœ B. N. Dwivedi; P. K. Raju ๐Ÿ“‚ Article ๐Ÿ“… 1980 ๐Ÿ› Springer ๐ŸŒ English โš– 630 KB

Steady state level density of 20 levels of boron-like ions, Mg viii and Si x, have been computed as a function of electron density and temperature. We have accounted for collisional and spontaneous radiative processes. Photo-excitation between the two levels of the ground term has also been consider