Abstract
Hydrogen atoms are key species in combustion of hydrogen/hydrocarbon fuels. Interference-free detection of hydrogen atoms natively generated in flames using femtosecond laser-induced fluorescence (LIF) was investigated employing two colors, i.e., 243 nm and 486 nm, as excitation source: two-photon excitation followed by a relay one-photon excitation. This strategy was compared with another commonly adopted two-photon LIF strategy using 205 nm for excitation. The potential interferences were investigated, and a direct verification method was proposed to prove this strategy be interference-free, and imaging of hydrogen atoms natively generated in methane/air flames was achieved.
Original language | English |
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Pages (from-to) | 3876-3880 |
Journal | International Journal of Hydrogen Energy |
Volume | 42 |
Issue number | 6 |
Early online date | 2016 Apr 17 |
DOIs | |
Publication status | Published - 2017 Feb |
Subject classification (UKÄ)
- Energy Engineering
Free keywords
- Atomic hydrogen
- Combustion diagnostics
- Femtosecond laser
- Multi-photon LIF
- Photolysis interference