Strategies for laser-induced fluorescence detection of nitric oxide in high-pressure flames. III. Comparison of A–X excitation schemes

Wolfgang G. Bessler, Christof Schulz, Tonghun Lee, Jay B. Jeffries, Ronald K. Hanson

Research output: Contribution to journalArticle

Abstract

Laser-induced fluorescence (LIF) has proven a reliable technique for nitric oxide (NO) diagnostics in practical combustion systems. However, a wide variety of different excitation and detection strategies are proposed in the literature without giving clear guidelines of which strategies to use for a particular diagnostic situation. We give a brief review of the high-pressure NO LIF diagnostics literature and compare strategies for exciting selected transitions in the A–X(0, 0), (0, 1), and (0, 2) bands using a different detection bandpass. The strategies are compared in terms of NO LIF signal strength, attenuation of laser and signal light in the hot combustion gases, signal selectivity against LIF interference from O2and CO2, and temperature and pressure sensitivity of the LIF signal. The discussion is based on spectroscopic measurements in laminar premixed methane-air flames at pressures between 1 and 60 bars and on NO and O2LIF spectral simulations.

Original languageEnglish (US)
Pages (from-to)4922-4936
Number of pages15
JournalApplied Optics
Volume42
Issue number24
DOIs
StatePublished - Aug 20 2003
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering

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