Rates of processes initiated by pulsed laser production of F atoms in the presence of HCl, CH4, and CF3H

✍ Scribed by Christopher M. Moore; Ian W. M. Smith; David W. A. Stewart

• Publisher: John Wiley and Sons
• Year: 1994
• Tongue: English
• Weight: 844 KB
• Volume: 26
• Category: Article
• ISSN: 0538-8066
• DOI: 10.1002/kin.550260804

✦ Synopsis

Abstract

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.