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Rates of processes initiated by pulsed laser production of F atoms in the presence of HCl, CH 4 , and CF 3 H
Author(s) -
Moore Christopher M.,
Smith Ian W. M.,
Stewart David W. A.
Publication year - 1994
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/kin.550260804
Subject(s) - chemistry , pulsed laser , laser , production (economics) , analytical chemistry (journal) , organic chemistry , optics , physics , economics , macroeconomics
Time‐resolved vibrational chemiluminescence from HF has been recorded following the production of F atoms by the pulsed laser photolysis (λ = 266 nm) of F 2 in the presence of HCl, CH 4 , and CF 3 H. In the first two cases, experiments have been conducted by observing emission from HF(ν = 3) at four temperatures from 295 to 139 K. Rate constants have been determined over this range of temperature for the reactions of F atoms with HCl and CH 4 and of CH 3 radicals with F 2 , and for the relaxation of HF(ν = 3) by HCl and CH 4 . The reaction of F atoms with CF 3 H is slower than those with HCl and CH 4 and measurements on the emission from HF(ν = 2) have been used to infer rate constants for reaction and relaxation only at 295 K. © 1994 John Wiley & Sons, Inc.