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 language | English |
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Pages (from-to) | 775-782 |
Number of pages | 7 |
Journal | Proceedings of the Combustion Institute |
Volume | 31 |
Issue number | 1 |
Early online date | 1 Sept 2006 |
DOIs | |
Publication status | Published - Jan 2007 |
Keywords
- thermometry technique
- atomic lineshapes
- diode laser
- LIF
- OLAF