Laser photofragmention-laser induced fluorescence detection of the hydroperoxyl radical: Photofragment energy distributions, detection sensitivity and kinetics

A. J. Hynes, R. C. Richter, C. J. Nien

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

A laser photofragment-laser induced fluorescence technique has been developed for the detection of the hydroperoxyl radical, HO2. The OH photofragment rotational distribution peaks at low temperature with a preference for population of the lower energy, 2Π3/2, spin orbit component. Greater than 75% of the O atoms are produced in the O1D state. An HO2 detection sensitivity of 2 × 1011 cm-3 was achieved in 300 Torr of N2, indicating that this approach has the sensitivity and temporal resolution to be useful for kinetic studies of HO2 under realistic atmospheric conditions.

Original languageEnglish (US)
Pages (from-to)633-638
Number of pages6
JournalChemical Physics Letters
Volume258
Issue number5-6
DOIs
StatePublished - Aug 23 1996

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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