ISSN:
1089-7690
Source:
AIP Digital Archive
Topics:
Physics
,
Chemistry and Pharmacology
Notes:
The excitation of BrF B 3Π(0+) by metastable singlet oxygen, O2(a 1Δ,b 1Σ), has been studied under steady-state conditions in a flow tube reactor. The chemiluminescence from BrF(B) indicates a nonthermal vibrational distribution that peaks at v'=3 and a ratio of BrF(B) to O2(b 1Σ+g) concentration of about 5×10−4. The emission is attributed to three-body recombination of bromine and fluorine atoms with a rate coefficient of approximately 7×10−31 cm6/molecule2 s and a single-step energy-transfer collision with O2(b 1Σ). The rate coefficients for quenching of O2(b 1Σ) by CO2, CF4, Br2, and Br have been determined from a linear Stern–Volmer analysis as 3.0, 0.027, 9.7, and 140×10−13 cm3/molecule s, respectively.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.461709
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