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Coronal lines and the importance of deep-core-valence correlation in Ag-like ions

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Author

  • Jon Grumer
  • Ruifeng Zhao
  • Tomas Brage
  • Wenxian Li
  • Sven Huldt
  • Roger Hutton
  • Yaming Zou

Summary, in English

We report on large-scale and critically evaluated ab initio multiconfiguration Dirac-Hartree-Fock calculations of the wavelength and transition rate of the "coronal," M1 transition 4f F-2(5/2)o-F-2(7/2)o in Ag-like ions. The transition between these two fine-structure levels, which makes up the ground term for Z >= 62 in the isoelectronic sequence, has recently been observed in Yb23+ and W27+, where the latter could be of great importance for fusion plasma diagnostics. We present values for all members of the sequence between Z = 50 and 94, which are supported by excellent agreement with values from recent experiments. The importance of including core-valence correlation with the n = 3 shell in the theoretical model is emphasized. The results show close-to-spectroscopic accuracy for these forbidden lines.

Publishing year

2014

Language

English

Publication/Series

Physical Review A (Atomic, Molecular and Optical Physics)

Volume

89

Issue

6

Document type

Journal article

Publisher

American Physical Society

Topic

  • Astronomy, Astrophysics and Cosmology
  • Condensed Matter Physics

Status

Published

ISBN/ISSN/Other

  • ISSN: 1050-2947