Applied Physics B

, Volume 61, Issue 5, pp 499–503 | Cite as

Time-resolved LIF of OH in the flame front of premixed and diffusion flames at atmospheric pressure

  • M. Köllner
  • P. Monkhouse
Article

Abstract

Time-resolved fluorescence measurements are reported for the OH radical in the flame fronts of laminar atmospheric pressure flames. Effective (collision-limited) lifetimes were determined following excitation of theA2Σ+,υ′ = 0 state of OH using a picosecond dye-laser system based on the distributed-feedback principle. Measurements were made in a premixed knife-edge burner for rich CH4/N2O/N2 and CH4/air flames and in a counterflow diffusion burner for a CH4/air flame. In the accessible range, results indicate a net dependence of lifetime on temperature intermediate betweenT andT0.5 for these flames.

PACS

31.70 34.50 82.20 

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Copyright information

© Springer-Verlag 1995

Authors and Affiliations

  • M. Köllner
    • 1
  • P. Monkhouse
    • 1
  1. 1.Physikalisch-Chemisches Institut der Universität HeidelbergHeidelbergGermany

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