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Conferences > QELS > 1995 > QMF > QMF3
  • Quantum Electronics and Laser Science Conference
  • OSA Technical Digest (Optica Publishing Group, 1995),
  • paper QMF3

Fluorescence lifetimes of the alkoxy radicals

Xinming Zhu, Carron Sandifor, Mohammed M. Kamal, and Prabhakar Misra

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Abstract

The alkoxy (RO; R = CH3, C2H5, i-C3H7) radicals are important as oxidation intermediates in the combustion of hydrocarbons and in air pollution.1 Alkyl nitrite (RONO) precursors (of typically 1–2% concentration) were transported by high-pressure helium (12-14 atm) and were supersonically expanded into a vacuum chamber through a commercial pulsed nozzle. The chamber pressure was ~10−4 Torr with the pulsed valve in operation. UV radiation (typically 50-mJ pulses at 248 nm) was used to photodissociate RONO to generate the RO radicals in situ in the jet expansion.2

© 1995 Optical Society of America

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