Dielectronic recombination has been investigated for $\Delta n=1\mathrm{}$ resonances of ground-state Li${}^{+}{(1s}^2)$ and for $\Delta n=0\mathrm{}$ resonances of metastable Li${}^{+}\left(1s2s{}^{3}S\right).\mathrm{}$ The ground-state spectrum shows three prominent transitions between 53 and 64 eV, while the metastable spectrum exhibits many transitions with energies $<3.2\mathrm{}$ eV. Reasonably good agreement of R-matrix, $\mathrm{LS}$ coupling calculations with the measured recombination rate coefficient is obtained. The time dependence of the recombination rate yields a radiative lifetime of $52.2\pm 5.0$ s for the 2${}^{3}S$ level of Li${}^{+}.$

• Received 19 July 1999

DOI:https://doi.org/10.1103/PhysRevA.60.R3350