Infrared Emission and Absorption in an Ammonia-Oxygen Diffusion Flame

Abstract
An ammonia‐oxygen diffusion flame has been studied spectroscopically in the infrared region using a flat diffusion flame of the kind described by Wolfhard and Parker. The emissions of OH, NH3, and H2O and the absorptions of NH3 and H2O have been studied as a function of position in the flame. Combined with the information obtained earlier by Wolfhard and Parker concerning the distributions of OH, NH, NH2, and O2, a complete description of the flame is possible. Evidence is presented that OH is in vibrational as well as rotational equilibrium in the flame. No evidence of infrared emission by NH or NH2 could be found.
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