Abstract

Infrared chemiluminescence has been observed from vibrationally excited CO, formed in the reaction, O + CS → CO + S. The quenching of the CO overtone spectrum has been studied as a function of the concentration of each of a number of added gases. A steady-state treatment is developed which allows rates to be determined for the de-excitation of individual vibrational levels of CO (4 ≤ v ≤ 13) by He, CO (v = 0), NO, N2, O2, OCS, N2O, and CO2. The experimental results are compared with theoretically predicted rates. Finally, the importance of the results for interpreting the behavior of CO vibrational lasers is considered.

© 1971 Optical Society of America

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