Abstract
A time-resolved Fourier transform emission spectrometer, operating in the stop-scan mode, is demonstrated as an inexpensive and versatile instrument for observation of infrared vibrational chemiluminescence. The entire evolution of an emission spectrum is obtained from a <i>single</i> scan of the interferometer, with a spectral and temporal resolution of 2 cm<sup>−1</sup> and 10 ns, respectively. Results are presented for a number of radical-radical reactions studied by this technique, where emission from highly excited CO, HF, CO<sub>2</sub>, and N<sub>2</sub>O is observed. Measurements include nascent vibrational distributions, quantum yields for branching into different product channels, and bimolecular rate constants for the production and vibrational relaxation of product species. Experiments at low total pressure enable nascent vibrational and rotational distributions to be found for the HF fragment of the CO<sub>2</sub> laser photolysis of 1,1-chlorofluoroethylene. In addition, time-resolved spectra of HF, CO, CO<sub>2</sub>, CF<sub>4</sub>, and CHF<sub>3</sub> are demonstrated for infrared emission observed from a reactive ion plasma etching chamber.
PDF Article
More Like This
Cited By
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription
Add to BibSonomy