Electron-impact ionization of the metastable excited states of Li +

J. C. Berengut, S. D. Loch, C. P. Ballance, M. S. Pindzola

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5 Citations (Scopus)


Electron-impact ionization cross sections for the 1s2s 1S and 1s2s 3S metastable states of Li+ are calculated using both perturbative distorted-wave and non-perturbative close-coupling methods. Term-resolved distorted-wave calculations are found to be approximately 15% above term-resolved R-matrix with pseudostates calculations. On the other hand, configuration-average time-dependent close-coupling calculations are found to be in excellent agreement with the configuration-average R-matrix with pseudostates calculations. The non-perturbative R-matrix and close-coupling calculations provide a benchmark for experimental studies of electron-impact ionization of metastable states along the He isoelectronic sequence.
Original languageEnglish
Pages (from-to)1331-1336
Number of pages6
JournalJournal of Physics B: Atomic, Molecular and Optical Physics
Issue number7
Publication statusPublished - 14 Apr 2007


  • Atomic Physics


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