• Collision strengths for transitions in Ni XIX

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    • Keywords


      Collisional excitation; flexible atomic code; Dirac atomic 𝑅-matrix code.

    • Abstract


      In this paper we present calculations of electron impact excitation collision strengths for transitions among the 89 fine-structure levels of the 2s22p6, 2s22p53$\ell$, 2s2p63$\ell$, 2s22p54$\ell$, and 2s2p64$\ell$ 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.

    • Author Affiliations


      K M Aggarwal1 F P Keenan1

      1. Astrophysics Research Centre, School of Mathematics and Physics, Queen’s University Belfast, Belfast BT7 1NN, Northern Ireland, UK
    • Dates

  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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