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Redetermination of the rate coefficient for the reaction of O( 1 D) with N 2
Author(s) -
Ravishankara A. R.,
Dunlea E. J.,
Blitz M. A.,
Dillon T. J.,
Heard D. E.,
Pilling M. J.,
Strekowski R. S.,
Nicovich J. M.,
Wine P. H.
Publication year - 2002
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2001gl014850
Subject(s) - atmosphere (unit) , troposphere , reaction rate constant , analytical chemistry (journal) , function (biology) , production (economics) , molecule , reaction rate , physics , chemistry , thermodynamics , atmospheric sciences , kinetics , environmental chemistry , organic chemistry , macroeconomics , quantum mechanics , evolutionary biology , biology , economics , catalysis
The rate coefficient for the reaction of O( 1 D) with N 2 at 295 K has been measured in three laboratories to be 3.1 × 10 −11 cm 3 molecule −1 s −1 , with an uncertainty of 10% at the 95% confidence level, and to be 2.1 × 10 −11 exp {(115 ± 10) /T} cm 3 molecule −1 s −1 as a function of temperature. (The quoted uncertainty in E/R will allow calculation of the uncertainty in the rate constant at various temperatures.) The implications of this finding are to decrease the calculated OH production rate via the reaction of O( 1 D) with H 2 O in the atmosphere by roughly 15% in the mid‐troposphere and above and to greatly reduce the uncertainties in the calculated HO x and NO x production rates in the atmosphere.