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Proceedings Paper

Time-resolved correlated measurement of laser-induced-breakdown spectroscopy and electron number density: application to high-pressure hydrocarbon flames
Author(s): Anil K. Patnaik; Paul S. Hsu; Yue Wu; Mark Gragston; Zhili Zhang; James R. Gord; Sukesh Roy
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Paper Abstract

Application of time-resolved ultrashort-pulse-laser–based laser-induced breakdown spectroscopy (LIBS) is proposed for diagnostics in hydrocarbon flames at elevated pressures. Earlier study in nanosecond-laser–based LIBS for measuring fuel-to-air (F/A) ratios in stable hydrocarbon flame at high pressures is reported to have high measurement instabilities. A correlated measurement of time-resolved LIBS and electron number density measurement is carried out to develop an understanding of the source of the aforesaid measurement instability. The planned correlated measurements of LIBS and electron number density with short picosecond to femtosecond excitations have potentials to significantly reduce the instability in F/A ratio measurements at high pressure.

Paper Details

Date Published: 17 February 2017
PDF: 6 pages
Proc. SPIE 10094, Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XVII, 100941G (17 February 2017); doi: 10.1117/12.2252546
Show Author Affiliations
Anil K. Patnaik, Spectral Energies, LLC (United States)
Wright State Univ. (United States)
Paul S. Hsu, Spectral Energies, LLC (United States)
Yue Wu, The Univ. of Tennessee Knoxville (United States)
Mark Gragston, The Univ. of Tennessee Knoxville (United States)
Zhili Zhang, The Univ. of Tennessee Knoxville (United States)
James R. Gord, Air Force Research Lab. (United States)
Sukesh Roy, Spectral Energies, LLC (United States)


Published in SPIE Proceedings Vol. 10094:
Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XVII
Alexander Heisterkamp; Peter R. Herman; Michel Meunier; Roberto Osellame, Editor(s)

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