Recombination of ground state halogen atoms. Part 4.—Kinetics of recombination of bromine atoms

Abstract

The rate of recombination of Br ²P atoms at 298 K has been measured in a discharge-flow system at pressures near 300 N m^–2, using absorption spectrophotometry of Br₂ at λ 415 nm to measure [Br].

Rate constants for the third order recombination reaction (3) are reported: Br + Br + M [graphic omitted] Br₂+ M. (3), k_3,M=–½[Br]^–2[M]^–1{d[Br]/dt}(cm⁶ molecule^–2 s^–1), 298 K: k_3,Ar=(9.4 ± 2.5)× 10^–33; k_3,He=(2.8 ± 0.5)× 10^–33; k_3,Br2=(8.3 ± 3.3)× 10^–32; k_3,O2=(1.2 ± 0.3)× 10^–32; k_3,N2=(8.3 ± 3.0)× 10^–33.