Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995pobeo..50...87k&link_type=abstract
Publications de l'Observatoire Astronomique de Beograd, No. 50, p. 87 - 90
Astronomy and Astrophysics
Astronomy
Stark Broadening: Spectral Lines
Scientific paper
For evaluation of Stark broadening parameters one can use the so-called semiclassical approach or a fully quantum mechanical theoretical approach which require elaborate calculations even for a single line. For large-scale calculations, when high accuracy for each particular line is not required, simple approximations with good average accuracy are very useful. Furthermore, these simple formulae do not require complete set of atomic data which are sometimes missing, in particular for some multiply ionized atoms and in this case sophisticated calculations of the Stark broadening parameter are not feasible. The aim of this paper is to test two popular simple approaches for evaluation of Stark widths, simple semiclassical formula derived by Griem (1974) and modified semiempirical formula by Dimitrijević and Konjević (1980). Estimated Stark widths will be compared with most comprehensive experimental results for doubly ionized inert gases (Konjević and Pittman, 1980). In order to determine eventual systematic discrepancies along homologous ions only analogous transitions are selected for comparison.
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