Strategy of interference-free atomic hydrogen detection in flames using femtosecond multi-photon laser-induced fluorescence

Research output: Contribution to journalArticle

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.

Details

Authors
Organisations
External organisations
  • Tianjin University
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Energy Engineering

Keywords

  • Atomic hydrogen, Combustion diagnostics, Femtosecond laser, Multi-photon LIF, Photolysis interference
Original languageEnglish
Pages (from-to)3876-3880
JournalInternational Journal of Hydrogen Energy
Volume42
Issue number6
Early online date2016 Apr 17
Publication statusPublished - 2017 Feb
Publication categoryResearch
Peer-reviewedYes