Answers are grounded in this paper and cite their sources.
We report on high-resolution, state-selective dielectronic-recombination measurements for metastable, He-like O⁶⁺ ions. The measurements were performed with a merged-beams configuration in an electron cooler. The energy resolution was found to be as low as 0.135 eV. Dielectronic recombination associated with excitations of the 1s2s(¹S) and 1s2s(³S) cores are reported. The data demonstrate strong effects of configuration interaction between different intermediate states with almost identical energy.
No takes yet. Share an insight, caveat, or question.
Andersen et al. (1989) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: