Statistics – Computation
Scientific paper
May 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26a...146..149a&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 146, no. 1, May 1985, p. 149-158. Research supported by the Science and Engine
Statistics
Computation
34
Collision Parameters, Computational Astrophysics, Electron Scattering, Electron Transitions, Line Spectra, Oxygen Ions, Atomic Energy Levels, Configuration Interaction, Electron Energy, Maxwell-Boltzmann Density Function, Optical Transition, Oscillator Strengths, Ratios
Scientific paper
Electron collision strengths have been calculated for the optically allowed transitions among the 1s22s22p2, 1s22s2p3, and 1s22p4 configurations of O III. The effective collision strengths are tabulated in a temperature range of 5×103 to 5×105K and are compared with earlier data. These effective collision strengths together with earlier atomic data for energy levels and transition probabilities are employed in calculating level populations of the lowest fifteen energetic levels of O III within the configurations 1s22s22p2 and 1s22s2p3. The populations are tabulated for these levels in a temperature range of 4×104 - 1×105K and a density range of 105 - 1010cm-3. From these populations the line intensity ratios of the astrophysically observable optically allowed transitions are calculated and compared with earlier theoretical and experimental values.
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