Polarization spectroscopy applied to C2 detection in a flame |
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Authors: | K Nyholm M Kaivola C G Aminoff |
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Institution: | (1) Department of Technical Physics, Helsinki University of Technology, Rakentajanaukio 2 C, FIN-02150 Espoo, Finland |
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Abstract: | The detection of C2 radicals in a premixed acetylene-oxygen flame by using polarization spectroscopy is reported. The signal was recorded in the Swan system,d
3
II
g–a
3
II
u (0, 0), using a pulsed dye laser. The spectrum shows a very good signal-to-noise ratio with clearly resolved rotational structures of theP andR triplets. The dependence of the signal on the pump-beam polarization was also studied. The spatial distribution of the signal from C2 radicals in the flame was measured as a demonstration of the use of polarization spectroscopy in combustion diagnostics. |
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Keywords: | 42 65 33 20 |
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