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Collisional quenching of A 2Σ+ NO and A 2Δ CH in low pressure flames

✍ Scribed by Dwayne E. Heard; Jay B. Jeffries; David R. Crosley

Publisher
Elsevier Science
Year
1991
Tongue
English
Weight
415 KB
Volume
178
Category
Article
ISSN
0009-2614

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✦ Synopsis

Quenching of electronically excited CH and NO radicals in methane/air flames between 30 and 70 Tot-r has been studied using the time decay of laser-induced fluorescence. Rates of 0.3 and 1 lo' Torr-' were determined for A2A CH and A*E+ NO respectively at a temperature near 1700 K. These are compared with rates calculated using previously determined bimolecular quenching cross sections. The agreement is good, within 20 to 30%. The temperature dependence of Hz0 quenching of CH and ofN, and CO, quenching of NO need further investigation.

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