Collision Strengths for [O III] Optical and Infrared Lines
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.
Keywords
Cite
@article{arxiv.1311.6517,
title = {Collision Strengths for [O III] Optical and Infrared Lines},
author = {P. J. Storey and Taha Sochi and N. R. Badnell},
journal= {arXiv preprint arXiv:1311.6517},
year = {2014}
}
Comments
12 pages, 7 figures, 8 tables (list of collision strength data is also provided as supplementary material)