Advances in atomic data for plasma diagnostics

L. Fernández-Menchero, G. del Zanna, N. R. Badnell

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We present sets of new atomic data for astrophysical and fusion plasma diagnostics. We calculate electron-impact excitation collision strengths and effective collisions strengths for the Be- and Mg-like isoelectronic sequences up to Krq+. We use the R-Matrix Intermediate-Coupling Frame Transformation method. We also study the accuracy of calculations for highly-excited states and give extrapolation rules to estimate the effective collision strengths and their error at high n. We demonstrate the importance of a well converged CI/CC expansion in the R-matrix calculation to get good quality results, mainly for highly-excited states.

Original languageEnglish
Article number052035
Number of pages1
JournalJournal of Physics: Conference Series
Issue number5
Publication statusPublished - 7 Sept 2015
EventXXIX International Conference on Photonic, Electronic, and Atomic Collisions (ICPEAC) - Toledo, Spain
Duration: 22 Jul 201528 Jul 2015


  • atoms
  • electric excitation
  • excited states
  • impact ionization
  • linear transformations
  • matrix algebra
  • plasma diagnostics
  • collision strength
  • electron-impact excitation
  • fusion plasma diagnostics
  • highly excited state
  • intermediate coupling
  • isoelectronic sequence
  • R-matrix calculation
  • transformation methods
  • collisional plasmas


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