J. Chim. Phys.
Volume 61, 1964
|Page(s)||1509 - 1516|
|Published online||28 May 2017|
The infrared detection of free radicals using flash photolysis methods
Chemistry Department, University of California, Berkeley, California, .
A rapid-scan infrared spectrometer has been constructed and successfully applied to the gas phase study of short-lived intermediates produced by flash photolysis. A zinc-doped germanium semiconductor detector and a Littrow mirror rotating at 10 000 rpm permit scan rates of 1 000 cm–1/100 microseconds. Detector sensitivity extends over a wide spectral range, 2-40 μ. Two intermediates of short lifetime, chloroformic acid and CF2, have been identified and rough estimates of their half-lives have been obtained, 50-70 microseconds and 2,5 milliseconds, respectively. The possibilities of infrared emission studies are suggested by the emission spectrum from a Cl2 — H2 explosion initiated by flash photolysis.
© Paris : Société de Chimie Physique, 1964