Abstract

Magnetic field effects on chemiluminescence intensities from some reaction intermediates in low pressures C 2H 2/N, O flames were measured. O atoms were produced without O 2 by adding NO into a discharged N 2 stream. Diffusion flames were formed between electromagnet poles when a C 2H 2 stream from another inlet encountered an N 2 stream containing O and/or N atoms. Both partial titration by and excess addition of NO enhanced the magnetic field quenching of the chemiluminescence due to the C 2 Swan system. The CN violet showed magnetic field quenching only when the excess NO was present. Possible mechanisms for these magnetic field effects are discussed briefly.

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