Abstract
AbstractThe radiation of flames supported by halogens as oxidizer has been studied. Chlorine trifluoride, fluorine and chlorine give rise to flames whose structure and light emission are very different from those found in oxygen flames. Bromine and methyl bromide have also been added to oxygen and air flames and their effect has been recorded.Carbon formation in halogen flames is generally much greater than in the corresponding oxygen flames, but pure halogen‐hydrocarbon flames do not give rise to C2 and CH band emission. Hydrogen, when mixed with hydrocarbons, causes fluorine and chlorine trifluoride flames to emit very strong C2 and CN, but not CH bands. This influence of hydrogen on band emission, however, was not observed with chlorine flames. Although many of these differences can be explained by the change in the flame temperatures, and in consequence the reactions involved, other phenomena such as the formation of C2 radicals are not yet fully understood.
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