Radiative rates for E1, E2, M1, and M2 transitions in the Br-like ions Sr IV, Y V, Zr VI, Nb VII, and Mo VIII

Kanti M. Aggarwal*, Francis P. Keenan

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


Energies and lifetimes are reported for the lowest 375 levels of five Br-like ions, namely SrIV, YV, ZrVI, NbVII, and MoVIII, mostly belonging to the 4s<sup>2</sup>4p<sup>5</sup>, 4s<sup>2</sup>4p<sup>4</sup>4ℓ, 4s4p<sup>6</sup>, 4s<sup>2</sup>4p<sup>4</sup>5ℓ, 4s<sup>2</sup>4p<sup>3</sup>4d<sup>2</sup>, 4s4p<sup>5</sup>4ℓ, and 4s4p<sup>5</sup>5ℓ configurations. Extensive configuration interaction has been included and the general-purpose relativistic atomic structure package (grasp) has been adopted for the calculations. Additionally, radiative rates are listed among these levels for all E1, E2, M1, and M2 transitions. From a comparison with the measurements, the majority of our energy levels are assessed to be accurate to better than 2%, although discrepancies between theory and experiment for a few are up to 6%. An accuracy assessment of the calculated radiative rates (and lifetimes) is more difficult, because no prior results exist for these ions.

Original languageEnglish
Pages (from-to)9-104
JournalAtomic Data and Nuclear Data Tables
Early online date04 May 2015
Publication statusPublished - Sep 2015


  • Br-like ions
  • Energy levels
  • Lifetimes
  • Line strengths
  • Oscillator strengths
  • Radiative rates

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Atomic and Molecular Physics, and Optics


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