title: Atmospheric chemistry of BrO radicals: kinetics of the reaction with C2H5O2 radicals at 233-333 K.
abstract: Cavity ring-down spectroscopy was used to study the title reaction in 50-200 Torr of O2 diluent at 233-333 K. There was no discernible effect of total pressure, and a rate constant of k(BrO + C2H5O2) = (3.8 +/- 1.7) x 10(-12) cm3 molecule(-1) s(-1) was determined at 293 K in 150 Torr total pressure of O2 diluent. The addition of 1.4 x 10(17) molecules cm(-3) of H2O vapor had no measurable impact on k(BrO + C2H5O2) at 293 K and 150 Torr. The rate constant exhibited a negative temperature dependence and was described by k(BrO + C2H5O2) = 6.5 x 10(-13) exp((505 +/- 570)/T) cm3 molecule(-1) s(-1). Results are discussed with respect to the atmospheric chemistry of BrO radicals.
authors.affiliation: Department of Molecular Engineering, Kyoto University, Kyoto 615-8510, Japan.
authors.forename: Yosuke
authors.initials: Y
authors.lastname: Sakamoto
authors.forename: Daisuke
authors.initials: D
authors.lastname: Yamano
authors.forename: Tomoki
authors.initials: T
authors.lastname: Nakayama
authors.forename: Satoshi
authors.initials: S
authors.lastname: Hashimoto
authors.forename: Masahiro
authors.initials: M
authors.lastname: Kawasaki
authors.forename: Timothy J
authors.initials: TJ
authors.lastname: Wallington
authors.forename: Shun
authors.initials: S
authors.lastname: Miyano
authors.forename: Kenichi
authors.initials: K
authors.lastname: Tonokura
authors.forename: Kenshi
authors.initials: K
authors.lastname: Takahashi