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arXiv · 1311.6517

Collision Strengths for [O III] Optical and Infrared Lines

P. J. Storey·Taha Sochi·N. R. Badnell
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Abstract

We present electron collision strengths and their thermally averaged values for the forbidden lines of the astronomically abundant doubly-ionized oxygen ion, O^{2+}, in an intermediate coupling scheme using the Breit-Pauli relativistic terms as implemented in an R-matrix atomic scattering code. We use several atomic targets for the R-matrix scattering calculations including one with 72 atomic terms. We also compare with new results obtained using the intermediate coupling frame transformation method. We find spectroscopically significant differences against a recent Breit-Pauli calculation for the excitation of the [O III] lambda 4363 transition but confirm the results of earlier calculations.

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P. J. Storey, Taha Sochi, N. R. Badnell. 2013-11-25. Collision Strengths for [O III] Optical and Infrared Lines. https://doi.org/10.1093/mnras%2Fstu777

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