Energy levels and transition probabilities for nitrogen-like Fe xx

Francis Keenan, Valdas Jonauskas, Romas Kisielius, Patrick Norrington, V. Bogdanovich, M.E. Foord, R.F. Heeter, S.J. Rose, G. Ferland, P.A.M. Van Hoof

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


Energies of the 700 lowest levels in Fe XX have been obtained using the multiconfiguration Dirac-Fock method. Configuration interaction method on the basis set of transformed radial orbitals with variable parameters taking into account relativistic corrections in the Breit-Pauli approximation was used to crosscheck our presented results. Transition probabilities, oscillator and line strengths are presented for electric dipole (E1), electric quadrupole (E2) and magnetic dipole (M1) transitions among these levels. The total radiative transition probabilities from each level are also provided. Results are compared with data compiled by NIST and with other theoretical work.
Original languageEnglish
Pages (from-to)745-U69
Number of pages677
JournalAstronomy and Astrophysics
Issue number2
Publication statusPublished - Apr 2005

ASJC Scopus subject areas

  • Space and Planetary Science


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