Laser-induced breakdown flame thermometry

Johannes Kiefer, Johannes W. Troeger, Zhongshan Li, Thomas Seeger, Marcus Alden, Alfred Leipertz

Research output: Contribution to journalArticle

41 Citations (Scopus)

Abstract

The determination of temperature distribution is an essential task when flames are characterized. We propose a new approach for flame thermometry based on laser-induced breakdown spectroscopy (LIBS) utilizing the temperature dependency of the breakdown threshold laser pulse energy. Calibration measurements are carried out in heated gas flows and post-combustion gases. Compositional effects on the breakdown threshold are corrected employing a straightforward procedure. For this purpose, the elemental composition is derived from the LIBS spectra and this information is then used for correcting the measured threshold laser pulse energy. A series of proof-of-concept measurements in a laminar methane/air flame on a Bunsen burner is conducted and compared to reference data from coherent anti-Stokes Raman scattering (CARS). The corrected LIBS temperatures show excellent agreement with those obtained by CARS. Therefore, our approach represents a simple and straightforward alternative to traditionally used thermometry methods. (C) 2012 The Combustion Institute. Published by Elsevier Inc. All rights reserved.
Original languageEnglish
Pages (from-to)3576-3582
Number of pages7
JournalCombustion and Flame
Volume159
Issue number12
Early online date6 Sep 2012
DOIs
Publication statusPublished - 1 Dec 2012

Fingerprint

Laser induced breakdown spectroscopy
laser-induced breakdown spectroscopy
temperature measurement
flames
breakdown
thresholds
Raman scattering
Lasers
Laser pulses
Raman spectra
lasers
Methane
burners
pulses
Fuel burners
gas flow
Flow of gases
Temperature distribution
temperature distribution
methane

Keywords

  • laser-induced breakdown spectroscopy
  • temperature
  • composition
  • plasma
  • laminar flames

Cite this

Kiefer, J., Troeger, J. W., Li, Z., Seeger, T., Alden, M., & Leipertz, A. (2012). Laser-induced breakdown flame thermometry. Combustion and Flame, 159(12), 3576-3582. https://doi.org/10.1016/j.combustflame.2012.08.005

Laser-induced breakdown flame thermometry. / Kiefer, Johannes; Troeger, Johannes W.; Li, Zhongshan; Seeger, Thomas; Alden, Marcus; Leipertz, Alfred.

In: Combustion and Flame, Vol. 159, No. 12, 01.12.2012, p. 3576-3582.

Research output: Contribution to journalArticle

Kiefer, J, Troeger, JW, Li, Z, Seeger, T, Alden, M & Leipertz, A 2012, 'Laser-induced breakdown flame thermometry', Combustion and Flame, vol. 159, no. 12, pp. 3576-3582. https://doi.org/10.1016/j.combustflame.2012.08.005
Kiefer J, Troeger JW, Li Z, Seeger T, Alden M, Leipertz A. Laser-induced breakdown flame thermometry. Combustion and Flame. 2012 Dec 1;159(12):3576-3582. https://doi.org/10.1016/j.combustflame.2012.08.005
Kiefer, Johannes ; Troeger, Johannes W. ; Li, Zhongshan ; Seeger, Thomas ; Alden, Marcus ; Leipertz, Alfred. / Laser-induced breakdown flame thermometry. In: Combustion and Flame. 2012 ; Vol. 159, No. 12. pp. 3576-3582.
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