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

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

2006-12-19

arxiv.org/abs/physics/0612188v1

J. Phys. B: At. Mol. Opt. Phys. 40 (2007) 1331

Physics

Atomic Physics

Scientific paper

10.1088/0953-4075/40/7/002

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.

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