Answers are grounded in this paper and cite their sources.
The selective excitation of spectra by collisions of the second kind with active helium species was examined in a flowing helium afterglow. Techniques for titrating for the active species in the afterglow are described. Conditions under which the metastable atom He(23S), the atomic ion He+, or the molecular ion He2+ predominate in the burner are found and the spectra excited by each are listed.
No takes yet. Share an insight, caveat, or question.
Collins et al. (1964) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: