Collision strengths for transitions in Ni XIX |
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Authors: | K. M. Aggarwal F. P. Keenan |
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Affiliation: | (1) Astrophysics Research Centre, School of Mathematics and Physics, Queen’s University Belfast, Belfast, BT7 1NN, Northern Ireland, UK |
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Abstract: | In this paper we present calculations of electron impact excitation collision strengths for transitions among the 89 fine-structure levels of the 2s22p6, 2s22p53ℓ, 2s2p63ℓ, 2s22p54ℓ, and 2s2p64ℓ configurations of Ni XIX, for which flexible atomic code (FAC) has been adopted. Comparisons are made with the earlier available results in the literature, and the anomalies observed have been discussed. |
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Keywords: | Collisional excitation flexible atomic code Dirac atomic R-matrix code |
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