Optical spectroscopy of complex open-4d-shell ions Sn7+-Sn10+

F. Torretti*, A. Windberger, A. Ryabtsev, S. Dobrodey, H. Bekker, W. Ubachs, R. Hoekstra, E. V. Kahl, J. C. Berengut, J. R. Crespo Lopez-Urrutia, O. O. Versolato

*Corresponding author for this work

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Abstract

We analyze the complex level structure of ions with many-valence-electron open-[Kr] 4d(m) subshells (m = 7-4) with ab initio calculations based on configuration-interaction many-body perturbation theory (CI+MBPT). Charge-state-resolved optical and extreme ultraviolet (EUV) spectra of Sn7+-Sn10+ ions were obtained using an electron beam ion trap. Semiempirical spectral fits carried out with the orthogonal parameters technique and COWAN code calculations lead to 90 identifications of magnetic-dipole transitions and the determination of 79 energy ground-configuration levels, questioning some earlier EUV-line assignments. Our results confirm the ab initio predictive power of CI+MBPT calculations for these complex electronic systems.

Original languageEnglish
Article number042503
Number of pages16
JournalPhysical Review A
Volume95
DOIs
Publication statusPublished - 10-Apr-2017

Keywords

  • BODY-PERTURBATION-THEORY
  • CONFIGURATION-INTERACTION
  • ORTHOGONAL OPERATORS
  • ATOMIC-STRUCTURE
  • ENERGY-LEVELS
  • 5TH SPECTRUM
  • 6TH SPECTRUM
  • B-SPLINES
  • SN-VII
  • PD-X

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