Femtosecond laser-induced cyano chemiluminescence in methane-seeded nitrogen gas flows for near-wall velocimetry

Research output: Contribution to journalArticle

Abstract

We demonstrate a velocimetric technique based on femtosecond laser-induced cyano (CN) chemiluminescence (FLICC). High intensity emission originated from CN(B-X) fluorescence was observed in filaments generated by focusing a femtosecond laser in methane-seeded nitrogen gas flows. The emission is strong and can last for hundreds of microseconds with a proper methane concentration. FLICC was adopted for velocity measurements, and promising results were obtained for near-wall measurements.

Details

Authors
  • Bo Li
  • Dayuan Zhang
  • Xiaofeng Li
  • Qiang Gao
  • Zhifeng Zhu
  • Zhongshan Li
Organisations
External organisations
  • Tianjin University
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Energy Engineering

Keywords

  • femtosecond laser, laser-induced chemiluminescence, velocimetry
Original languageEnglish
Article number295102
JournalJournal of Physics D: Applied Physics
Volume51
Issue number29
Publication statusPublished - 2018 Jun 28
Publication categoryResearch
Peer-reviewedYes