Comparison between CARS and corrected thermocouple temperature measurements in a diffusion flame
- 1 September 1982
- journal article
- Published by Optica Publishing Group in Applied Optics
- Vol. 21 (17) , 3119-3125
- https://doi.org/10.1364/ao.21.003119
Abstract
Coherent anti-Stokes Raman spectroscopy (CARS) has been used to obtain radial temperature profiles in an axisymmetric methane diffusion flame. Temperatures were obtained from analysis of background-free nitrogen Q- and O-branch spectra. The spectra were analyzed with a nonlinear least-squares CARS fitting program and compared to measurements from radiation- and conduction-corrected thermocouples. Excellent agreement was obtained in regions of relatively constant temperature, whereas improved CARS spatial resolution was required to obtain agreement near steep temperature gradients.Keywords
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