期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 42, 期 6, 页码 3876-3880出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2016.05.294
关键词
Atomic hydrogen; Multi-photon LIF; Femtosecond laser; Photolysis interference; Combustion diagnostics
资金
- National Natural Science Foundation of China [91541119, 51306128, 51320105008]
- Natural Science Foundation of Tianjin [13JCYBJC36900]
- Swedish Energy Agency through the Swedish-Chinese collaboration project
Hydrogen atoms are key species in combustion of hydrogen/hydrocarbon fuels. Interference-free detection of hydrogen atoms natively generated in flames using femto-second laser-induced fluorescence (LIE) 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. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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