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Citation: Ni Tuqiang, Nie Xujian, Yu Shuqin, Kong Fanao. THE LASER DIAGNOSTICS OF FLAME
Ⅲ THE DISTRIBUTIONS OF C₂ AND CHRADICALS IN A LPG/AIR FLAME MEASURED BY LASER INDUCED FLUORESCENCE TECHNIQUE[J]. Acta Physico-Chimica Sinica, ;1987, 3(02): 136-140. doi: 10.3866/PKU.WHXB19870206 shu

THE LASER DIAGNOSTICS OF FLAME
Ⅲ THE DISTRIBUTIONS OF C₂ AND CHRADICALS IN A LPG/AIR FLAME MEASURED BY LASER INDUCED FLUORESCENCE TECHNIQUE

1.
Department of Chemistry; The University of Science and Technology of China; Hefei; Anhui

Received Date: 3 September 1985
Available Online: 15 April 1987

Using laser induced fluorescence technique and shifting the position of the burner, two-dimensional concentration distribution diagrams of C_2(X) and CH(X) radicals in a part premixed, rich LPG/air flame were first obtained. The excita- tion and the detection bands were (0, 0) and (0, 1) of C_2(A~(3Π)←→X~(3Π)) transitions respectively, while for CH(X) species, the transition of B~(2∑), v′=0←X~(2Π), v″=0 was excited and the followed process A~(2Δ), v′=0→X~(2Π), v″=0 was detec- ted.
Both C_2(X) and CH(X) radicals concentrated in the thin layer of the inner cone of the flame and in an ellipsoid beyond the cone. C_2 was generated via pyrolysis and then agglomerated to form carbon particles. CH was produced from the reaction of small hydrocarbon radicals with oxygen and/or oxides in flame.
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THE LASER DIAGNOSTICS OF FLAME Ⅲ THE DISTRIBUTIONS OF C2 AND CHRADICALS IN A LPG/AIR FLAME MEASURED BY LASER INDUCED FLUORESCENCE TECHNIQUE

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THE LASER DIAGNOSTICS OF FLAME
Ⅲ THE DISTRIBUTIONS OF C₂ AND CHRADICALS IN A LPG/AIR FLAME MEASURED BY LASER INDUCED FLUORESCENCE TECHNIQUE