Low Temperature Rate Constants for the Reactions of O(1D) with N2, O2, and Ar | Zendy

Romain Grondin | Zendy; JeanChristophe Loison | Zendy; Kevin M. Hickson | Zendy

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Low Temperature Rate Constants for the Reactions of O(¹D) with N₂, O₂, and Ar

Author(s) -

Romain Grondin,

JeanChristophe Loison,

Kevin M. Hickson

Publication year - 2016

Publication title -

the journal of physical chemistry a

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.756

H-Index - 235

eISSN - 1520-5215

pISSN - 1089-5639

DOI - 10.1021/acs.jpca.5b12358

Subject(s) - reaction rate constant , quenching (fluorescence) , photodissociation , atmospheric temperature range , analytical chemistry (journal) , chemistry , kinetics , chemical kinetics , atomic physics , ultraviolet , fluorescence , materials science , photochemistry , thermodynamics , physics , optics , optoelectronics , chromatography , quantum mechanics

The kinetics of the gas-phase quenching reactions O((1)D) + N2, O((1)D) + O2, and O((1)D) + Ar have been studied over the 50-296 K temperature range using the Laval nozzle method. O((1)D) atoms were created in situ by the pulsed photolysis of O3 precursor molecules at 266 nm. Rate constants for these processes were measured directly, following the decay of O((1)D) atoms through vacuum ultraviolet laser-induced fluorescence at 115.215 nm. For the O((1)D) + N2 and O((1)D) + O2 reactions, the quenching efficiencies are seen to increase as the temperature falls. For the O((1)D) + N2 system, this indicates the likely influence of the intermediate complex lifetime on the quenching rate through nonadiabatic processes. For the O((1)D) + O2 system, which is considerably more complex, this behavior could result from the interactions between several potential energy surfaces.

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