Journal
COMBUSTION AND FLAME
Volume 159, Issue 12, Pages 3576-3582Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.combustflame.2012.08.005
Keywords
Laser-induced breakdown spectroscopy; Temperature; Composition; Plasma; Laminar flames
Categories
Funding
- SSF (Swedish Foundation for Strategic Research)
- Swedish Energy Agency through CECOST (Centre for Combustion Science and Technology)
- Swedish Energy Agency through VR (Swedish Research Council)
- European Union (Large Scale Facility in Combustion and Lund Laser Centre)
- Scottish Funding Council (SFC) through the Scottish Sensor System Centre (SSSC)
- German Research Foundation (DFG)
Ask authors/readers for more resources
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.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available