Photolytic production of ethynyl radical (C2H): collisional quenching of A2. PI.. fwdarw. X2. SIGMA.+ infrared emission and the removal of excited C2H

F Shokoohi, TA Watson, H Risler, F Kong…

文献索引：Shokoohi, F.; Watson, T. A.; Reisler, H.; Kong, F.; Renlund, A. M.; Wittig, C. Journal of Physical Chemistry, 1986 , vol. 90, # 22 p. 5695 - 5700

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被引用次数: 40

摘要

We report the observation of time-resolved C2H A211-%* Z+ infrared emission (1-5 pm) following the 193-nm photolyses of C2H2 and C2HBr. Quenching of this emission by numerous collision partners (M) under pseudo-first-order conditions leads to large bimo) ecuiar” rate coefficients”(eg> lo-” cm3 molecule-'sI, except when M is a rare gas or N2). Although such “rate coefficients” can be assigned to the quenching of fluorescence, they ...