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Kinetics of the BrO + NO2 association reaction. Temperature and pressure dependence in the falloff regime

✍ Scribed by R. P. Thorn; E. P. Daykin; P. H. Wine

Publisher
John Wiley and Sons
Year
1993
Tongue
English
Weight
947 KB
Volume
25
Category
Article
ISSN
0538-8066

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✦ Synopsis

A laser flash photolysis-long path absorption technique has been employed to study the kinetics of the reaction BrO + NO2 + M Q products as a function of temperature (248-346 K), pressure (16-800 torr), and buffer gas identity (N2, CF4). The reaction is found to be in the falloff regime between third and second-order over the entire range of conditions investigated. This is the first study where temperature-dependent measurements of kl ( P , T ) have been reported at pressures greater than 12 torr; hence, our results help constrain choices of kl ( P , T ) for use in models of lower stratospheric BrO, chemistry. Approximate falloff parameters in a convenient form for atmospheric modeling are derived.

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