A thermometry technique based on atomic lineshapes using diode laser LIF in flames

I.S. Burns, J. Hult, G. Hartung, C.F. Kaminski

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

We report on the development of a novel diode laser thermometry technique permitting temperature measurements in flames based on the fluorescence lineshapes of an atomic tracer species. The technique, which we term OLAF (one-line atomic fluorescence) requires only a single diode laser source for excitation, is simple to implement, and has excellent spatial resolution. Temperatures are deduced from the 5(2)P(1/2) -> 6(2)S(1/2) transition of atomic indium, the lineshape of which is highly sensitive to temperature changes at typical flame conditions. A rigorous validation is performed in a reference flame withcomparisons to measurements by CARS and by Na-line reversal, and to numerical simulations.
Original languageEnglish
Pages (from-to)775-782
Number of pages7
JournalProceedings of the Combustion Institute
Volume31
Issue number1
Early online date1 Sep 2006
DOIs
Publication statusPublished - Jan 2007

Keywords

  • thermometry technique
  • atomic lineshapes
  • diode laser
  • LIF
  • OLAF

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