Simultaneous two-dimensional visualization of soot and OH in flames using laser-induced fluorescence
(1996) In Applied Spectroscopy 50(9). p.1182-1186- Abstract
Two-dimensional visualization of soot has been realized in flames with the use of laser-induced fluorescence in C2 from laser-vaporized soot [LIF(C2)LVS]. Soot particles are heated to vaporization temperatures by the absorption of laser radiation. C2 radicals produced by this process are excited at wavelengths around 563 nm through the transition ν′ = 0 d3∏g←ν″ = 1 a3∏u, and the subsequent fluorescence at approximately 516 nm is detected. By frequency-doubling of the laser radiation, wavelengths around 281.5 nm are achieved, which can excite OH radicals to the ν′ = 1 A2Σ+ state from ν″ = 0 X2∏, with subsequent fluorescence at... (More)
Two-dimensional visualization of soot has been realized in flames with the use of laser-induced fluorescence in C2 from laser-vaporized soot [LIF(C2)LVS]. Soot particles are heated to vaporization temperatures by the absorption of laser radiation. C2 radicals produced by this process are excited at wavelengths around 563 nm through the transition ν′ = 0 d3∏g←ν″ = 1 a3∏u, and the subsequent fluorescence at approximately 516 nm is detected. By frequency-doubling of the laser radiation, wavelengths around 281.5 nm are achieved, which can excite OH radicals to the ν′ = 1 A2Σ+ state from ν″ = 0 X2∏, with subsequent fluorescence at approximately 310 nm. With the use of both these excitation wavelengths, and a Cassegrainian split-mirror telescope as the imaging detection system in front of the charge-coupled device (CCD) camera, simultaneous two-dimensional single-shot images of soot and OH were obtained on a single CCD chip, thus enabling both sooting regions and reaction zones in flames to be monitored.
(Less)
- author
- Bengtsson, Per Erik LU
- organization
- publishing date
- 1996-09
- type
- Contribution to journal
- publication status
- published
- in
- Applied Spectroscopy
- volume
- 50
- issue
- 9
- pages
- 5 pages
- publisher
- Society for Applied Spectroscopy
- external identifiers
-
- scopus:0030230687
- ISSN
- 0003-7028
- language
- English
- LU publication?
- yes
- id
- e86ed0b9-fbf4-4488-997a-acfe21e20e30
- date added to LUP
- 2016-06-29 17:42:41
- date last changed
- 2022-03-24 00:08:42
@article{e86ed0b9-fbf4-4488-997a-acfe21e20e30, abstract = {{<p>Two-dimensional visualization of soot has been realized in flames with the use of laser-induced fluorescence in C<sub>2</sub> from laser-vaporized soot [LIF(C<sub>2</sub>)LVS]. Soot particles are heated to vaporization temperatures by the absorption of laser radiation. C<sub>2</sub> radicals produced by this process are excited at wavelengths around 563 nm through the transition ν′ = 0 d<sup>3</sup>∏<sub>g</sub>←ν″ = 1 a<sup>3</sup>∏<sub>u</sub>, and the subsequent fluorescence at approximately 516 nm is detected. By frequency-doubling of the laser radiation, wavelengths around 281.5 nm are achieved, which can excite OH radicals to the ν′ = 1 A<sup>2</sup>Σ<sup>+</sup> state from ν″ = 0 X<sup>2</sup>∏, with subsequent fluorescence at approximately 310 nm. With the use of both these excitation wavelengths, and a Cassegrainian split-mirror telescope as the imaging detection system in front of the charge-coupled device (CCD) camera, simultaneous two-dimensional single-shot images of soot and OH were obtained on a single CCD chip, thus enabling both sooting regions and reaction zones in flames to be monitored.</p>}}, author = {{Bengtsson, Per Erik}}, issn = {{0003-7028}}, language = {{eng}}, number = {{9}}, pages = {{1182--1186}}, publisher = {{Society for Applied Spectroscopy}}, series = {{Applied Spectroscopy}}, title = {{Simultaneous two-dimensional visualization of soot and OH in flames using laser-induced fluorescence}}, volume = {{50}}, year = {{1996}}, }