Answers are grounded in this paper and cite their sources.
The spectra of the carbon ions have been studied using the beam-foil method. 102 previously classified lines in C II, C III and C IV were observed between 8000 Angstrom and 2200 Angstrom. An additional nine lines were positively identified as carbon ion emission, but do not coincide with previously identified lines.
No takes yet. Share an insight, caveat, or question.
Bakken et al. (1969) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: