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Dielectronic recombination of ground-state and metastable Li+ ions

Saghiri, A.A. and Linkemann, J. and Schmitt, M. and Schwalm, D. and Wolf, A. and Bartsch, T. and Hoffknecht, A. and Müller, A. and Graham, W.G. and Price, A.D. and Badnell, N.R. and Gorczyca, T.W. and Tanis, J.A. (1999) Dielectronic recombination of ground-state and metastable Li+ ions. Physical Review A, 60 (5). R3350-R3353. ISSN 1094-1622

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Abstract

Dielectronic recombination has been investigated for -n=1 resonances of ground-state Li+(1s2) and for -n=0 resonances of metastable Li+(1s2s 3S). The ground-state spectrum shows three prominent transitions between 53 and 64 eV, while the metastable spectrum exhibits many transitions with energies <3.2 eV. Reasonably good agreement of R-matrix, LS coupling calculations with the measured recombination rate coefficient is obtained. The time dependence of the recombination rate yields a radiative lifetime of 52.2±5.0 s for the 23S level of Li+.