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Depletion kinetics of low‐lying states of tungsten in the presence of NO, N 2 O, and SO 2
Author(s) -
Harter James S.S.,
Campbell Mark L.,
McClean Roy E.
Publication year - 1997
Publication title -
international journal of chemical kinetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.341
H-Index - 68
eISSN - 1097-4601
pISSN - 0538-8066
DOI - 10.1002/(sici)1097-4601(1997)29:5<367::aid-kin7>3.0.co;2-s
Subject(s) - chemistry , tungsten , reaction rate constant , kinetics , kinetic energy , photodissociation , gas phase , atomic physics , atmospheric temperature range , photochemistry , thermodynamics , organic chemistry , physics , quantum mechanics
The gas‐phase reactivities of W(a 5 D J , a 7 S 3 ) with N 2 O, SO 2 , and NO in the temperature range of 295–573 K are reported. Tungsten atoms produced by the photodissociation of W(CO) 6 . The tungsten atoms were detected by a laser‐induced fluorescence technique. The removal rate constants for the 6s 2 5d 4 a 5 D l states were found to be pressure dependent for all of the reactants. Removal rate constants for the 6s 1 5d 5 a 7 S 3 state were found to be fast compared to the a 5 D J states and often approached the gas kinetic rate constant. The reaction rates for all the states were found to be pressure independent with respect to the total pressure. Results are discussed in terms of the different electronic configurations of the states of tungsten © 1997 John Wiley & Sons, Inc. Int J Chem Kinet 29: 367–375 1997