Flame spectra from the interaction of fluorine and some halogen-containing compounds

The cold flames generated by the interaction of gaseous fluorine and CH₃I, C₂H₅I, CH₂Cl₂, CHCl₃, and CCl₄ are described. The spectra of these flames were determined. The spectroscopic results are interpreted from the point of view of the occurrence of branching in fluorination chain reactions, when superequilibrium concentrations of chemically excited molecules are formed, the latter subsequently decaying into a radical and an atom (as in the case of the F₂+CH₃I system) or into a biradical and a saturated molecule (F₂+CH₂CI₂ system).In conclusion, the author wishes to express his gratitude to Academician V. N. Kondrat'ev, A. E. Shilov, and A. M. Chaikin for a discussion of the results and assistance in the work.