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Laser-induced breakdown spectroscopy in a partially premixed turbulent jet flame

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Author

Summary, in English

A new approach for studying mixing and combustion phenomena in turbulent partially premixed flames using laser-induced breakdown spectroscopy (LIBS) is demonstrated. Setting the laser pulse energy just above the breakdown threshold in the cold gas allows statistical data to be obtained concerning the probability of finding cold or hot gas inside the measurement volume. Moreover, a compositional analysis utilizing the LIBS spectra allows the mixing of the different cold gas flows to be studied. A proof-of-concept experiment is carried out in a turbulent jet flame stabilized on a coaxial burner. The LIBS data agree well with results obtained by planar laser-induced fluorescence of OH radicals.

Department/s

Publishing year

2013

Language

English

Publication/Series

Measurement Science & Technology

Volume

24

Issue

7

Document type

Journal article

Publisher

IOP Publishing

Topic

  • Atom and Molecular Physics and Optics

Keywords

  • laser-induced breakdown spectroscopy
  • mixing
  • flame surface density
  • statistical analysis

Status

Published

ISBN/ISSN/Other

  • ISSN: 0957-0233