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C2 Production and Excitation in Sooting Flames using Visible Laser Radiation : Implications for Diagnostics in Sooting Flames

Bengtsson, Per Erik LU and Aldén, Marcus LU (1991) In Combustion Science and Technology 77(4-6). p.307-318
Abstract

Swan band emission of C2. which had been produced and excited (d3x←a 3u, Δ v = 0) by focused, tunable, visible laser radiation, was studied in sooting ethylene flames. The C2signal from the sooting regions of the flames was found to be proportional to the measured volume fractions of soot, indicating laser-vaporized soot to be the source of the signal, and as such it can be used as a diagnostic tool for point measurements of the volume fraction of soot. C2emission was detected for all incident wavelengths between 485 and 540 nm, with a C2signal 1–2 orders of magnitude higher when the wavelength was tuned to a C2 resonance than when tuned... (More)

Swan band emission of C2. which had been produced and excited (d3x←a 3u, Δ v = 0) by focused, tunable, visible laser radiation, was studied in sooting ethylene flames. The C2signal from the sooting regions of the flames was found to be proportional to the measured volume fractions of soot, indicating laser-vaporized soot to be the source of the signal, and as such it can be used as a diagnostic tool for point measurements of the volume fraction of soot. C2emission was detected for all incident wavelengths between 485 and 540 nm, with a C2signal 1–2 orders of magnitude higher when the wavelength was tuned to a C2 resonance than when tuned to a wavelength between the Swan bands. High concentrations of laser-produced C2 and emission from C2Swan bands can, through interference effects, limit the applicability of laser diagnostic techniques to sooting flames. © 1991, Taylor & Francis Group, LLC. All rights reserved.

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Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
keywords
C2 Interference, Laser Diagnostics, Soot Vaporization, Sooting Flames
in
Combustion Science and Technology
volume
77
issue
4-6
pages
12 pages
publisher
Taylor & Francis
external identifiers
  • Scopus:0011826238
ISSN
0010-2202
DOI
10.1080/00102209108951733
language
English
LU publication?
yes
id
fbcac4d9-bedf-49aa-b796-5bb9c83b8595
date added to LUP
2016-06-29 17:02:44
date last changed
2016-10-13 05:11:08
@misc{fbcac4d9-bedf-49aa-b796-5bb9c83b8595,
  abstract     = {<p>Swan band emission of C<sub>2</sub>. which had been produced and excited (d<sup>3</sup>∏<sub>x</sub>←a <sup>3</sup>∏<sub>u</sub>, Δ v = 0) by focused, tunable, visible laser radiation, was studied in sooting ethylene flames. The C<sub>2</sub>signal from the sooting regions of the flames was found to be proportional to the measured volume fractions of soot, indicating laser-vaporized soot to be the source of the signal, and as such it can be used as a diagnostic tool for point measurements of the volume fraction of soot. C<sub>2</sub>emission was detected for all incident wavelengths between 485 and 540 nm, with a C<sub>2</sub>signal 1–2 orders of magnitude higher when the wavelength was tuned to a C<sub>2</sub> resonance than when tuned to a wavelength between the Swan bands. High concentrations of laser-produced C<sub>2</sub> and emission from C<sub>2</sub>Swan bands can, through interference effects, limit the applicability of laser diagnostic techniques to sooting flames. © 1991, Taylor &amp; Francis Group, LLC. All rights reserved.</p>},
  author       = {Bengtsson, Per Erik and Aldén, Marcus},
  issn         = {0010-2202},
  keyword      = {C2 Interference,Laser Diagnostics,Soot Vaporization,Sooting Flames},
  language     = {eng},
  month        = {06},
  number       = {4-6},
  pages        = {307--318},
  publisher    = {ARRAY(0x99d69c0)},
  series       = {Combustion Science and Technology},
  title        = {C<sub>2</sub> Production and Excitation in Sooting Flames using Visible Laser Radiation : Implications for Diagnostics in Sooting Flames},
  url          = {http://dx.doi.org/10.1080/00102209108951733},
  volume       = {77},
  year         = {1991},
}