Formyl radical, HCO, was monitored for the first time in an atmospheric pressure premixed hydrocarbon flame. Intracavity laser absorption spectroscopy based on quasi-(cw) argon-ion pumped dye laser was used. The sensitivity of the detection is ∼5×1012 cm−3 and can be improved with better flame and laser stabilization.
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Sergey Cheskis (1995) studied this question.
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