Polarization spectroscopy applied to C2 detection in a flame

Kaj Nyholm, M. Kaivola, C. G. Aminoff

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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, d3IIg-a3IIu (0, 0), using a pulsed dye laser. The spectrum shows a very good signal-to-noise ratio with clearly resolved rotational structures of the P and R 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.

Original languageEnglish
Pages (from-to)5-10
JournalApplied Physics B: Lasers and Optics
Volume60
Issue number1
DOIs
Publication statusPublished - 1 Jan 1995
MoE publication typeA1 Journal article-refereed

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Keywords

  • 33.20
  • 42.65

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