Acta Phys. -Chim. Sin. ›› 1987, Vol. 3 ›› Issue (02): 119-122.doi: 10.3866/PKU.WHXB19870203

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LASER DIAGNOSTICS FOR FLAMES
Ⅱ. THE TWO-DIMENSIONAL CONCENTRATION DISTRIBUTION OF OH (X) IN A HYDROCARBON/AIR FLAME DETECTED BY LASER INDUCED FLUORESCENCE METHOD

Ni Tuqiang; Nie Xujian; Yu Shuqin; Kong Fanao   

  1. Department of Modern Chemistry; The University of Science and Technology of China; Hefei; Anhui
  • Received:1985-09-03 Revised:1986-01-17 Published:1987-04-15
  • Contact: Kong Fanao

Abstract: The in-situ, highly spatial resolution, two-dimensional distribution of OH(X) species in a premixed liquified petroleum gas/air flame is reported. The measure- ment was performed by the saturated laser induced fluorescence method with the tran- sitions of OH (A~(2∑~+), v′=0←→X~(2Π), v″=0). The intensities of the broadband emission reflected the local concent ations of OH(X) in the flame.
The result showed that OH(X) populated at the rim of the visual flame.
State-to-state reactions related to OH(X) radical in flame condition are discussed. OH(X) was produced from the oxidation of small hydrogen-containing radicals. The consumption of OH(X) seemed via reaction (10) and (11). The population of OH(A) species is also discussed.