Physics – Atomic Physics
Scientific paper
Jul 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995adspr..15r..53m&link_type=abstract
Advances in Space Research (ISSN 0273-1177), vol. 15, no. 7, p. (7)53-(7)62
Physics
Atomic Physics
7
Abundance, Atomic Physics, Solar Atmosphere, Stellar Models, Ultraviolet Astronomy, Ultraviolet Spectra, Variations, X Ray Astronomy, X Ray Spectra, Atomic Excitations, Electron-Ion Recombination, Ionization, Rocket-Borne Instruments, Skylab Program, Soho Mission, Solar Maximum Mission
Scientific paper
The determination of elemental abundances in the solar atmosphere depends critically on the accuracy of the atomic physics assumed in the models. Uncertainties in the electron-ion excitation rates, ionization and recombination rates or other atomic processes can lead to variations in the derived relative abundance values. In this paper, the different methods used in the analyses of UV and X-ray spectra are explored. Particular attention is paid to the accuracy of the atomic parameters and the assumptions made in the atomic model. A summary is given of the most recent theoretical and laboratory work. Implications for analyses of existing solar datasets and proposed observations Solar Heliospheric Observatory (SOHO) are discussed.
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