Shock tube kinetic studies using a novel multi-pass absorption cell

L. N. Krasnoperov, J. V. Michael

Research output: Contribution to conferencePaperpeer-review


A number of elementary reactions of hydroxyl (OH) and methyl (CH3) radicals were studied in a shock tube by transient UV absorption using a novel multi-pass absorption cell for sensitive monitoring of transient species. The multi-pass cell consisted of two dielectric mirrors comprising a stable cavity and is used with traditional light sources. Single-shot kinetics with the initial concentration of OH radicals ≥ 5 × 1012 molecule/cc were recorded. The majority of the measurements were performed with the [OH]0 = (1 - 2) × l013 molecule/cc. A number of radical precursors were tested and (partially) characterized. For OH, pyrolysis of C2H5I/NO2 mixtures or pyrolysis of HNO3 were used. To produce OH and CH3, pyrolysis of (CH3)3COOH/(CH3)3 COO(CH3)3, or pyrolysis of CH3OH, were used. The kinetic results and the directions of the further development of the technique were discussed. Original is an abstract.

Original languageEnglish (US)
Number of pages1
StatePublished - 2002
Event29th International Symposium on Combustion - Sapporo, Japan
Duration: Jul 21 2002Jul 26 2002


Other29th International Symposium on Combustion

All Science Journal Classification (ASJC) codes

  • General Engineering


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