Answers are grounded in this paper and cite their sources.
Metastable x-ray-emitting chlorine ions with lifetimes in the nanosecond region have been found to be produced in the beam-foil excitation of fast chlorine beams. Using coincidence techniques we have determined that these metastable states belong to chlorine ions of two, three, and more than three electrons.
No takes yet. Share an insight, caveat, or question.
Cocke et al. (1972) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: