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Measurements of the ground-state ionization energy and wavelengths for the 1snp 1P*1-1s2 1S0 (n = 4-9) lines of Mg XI and F VIII

  • V. G. Pal'chikov
  • , A. Ya Faenov
  • , I. Yu Skobelev
  • , A. I. Magunov
  • , T. A. Pikuz
  • , F. B. Rosmej
  • , D. H.H. Hoffmann
  • , W. Süß
  • , M. Geißel
  • , E. Biémont
  • , P. Quinet
  • , P. Palmeri
  • , A. Sasaki
  • , T. Utsumi
  • VNIIFTRI
  • Université de Provence
  • GSI Helmholtz Centre for Heavy Ion Research
  • Technische Universität Darmstadt
  • University of Liege
  • Universite de Mons
  • Japan Atomic Energy Agency

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

The wavelengths of the 1snp 1P10-1s2 1S0 transitions in the He-like Mg XI (n = 4-9) and F VIII (n = 4-8) have been measured in laser-produced plasmas. The accuracy of the present measurements (0.4-1.6 mÅ) is a large improvement over previous results. The Rydberg series is used to determine the ground-state ionization energy off VIII and Mg XI: Eion (F VIII) = 953.96±0.11 eV, Eion (Mg XI) = 1761.88 ± 0.15 eV. These experimental results are compared with theoretical data calculated by the 1/Z-expansion method and the HFR and MCDF approaches. Fairly good agreement between theory and experiment is observed with a precision up to 5 × 10-5. Radiative corrections to the 1s2 1S0 state are analysed and compared with experiments. It is found that QED corrections to the ground-state ionization energy are significant at the present level of experimental accuracy.

Original languageEnglish
Article number310
Pages (from-to)2741-2754
Number of pages14
JournalJournal of Physics B: Atomic, Molecular and Optical Physics
Volume35
Issue number12
DOIs
StatePublished - 28 Jun 2002
Externally publishedYes

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