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Spectral interferences from formaldehyde in CH PLIF flame front imaging with broadband B-X excitation

Kiefer, J.; Ossler, Frederik LU ; Li, Zhongshan LU and Aldén, Marcus LU (2011) In Combustion and Flame 158(3). p.583-585
Abstract
In this letter we show that the use of slightly broadband laser sources like multimode alexandrite lasers for CH PLIF bears the danger of interferences from formaldehyde. Such interferences occur when the laser frequency is not carefully tuned to the B-X (0,0) R-branch band head at around 387.2 nm and manifest either in the appearance of an additional layer in the PLIF image or in a slight broadening of the actual CH layer. With careful frequency selection the formaldehyde signals were not observed. Suppression of the interferences is feasible by employing appropriate spectral filters. (C) 2010 The Combustion Institute. Published by Elsevier Inc. All rights reserved.
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
CH radical, PLIF imaging, Flame front, Formaldehyde
in
Combustion and Flame
volume
158
issue
3
pages
583 - 585
publisher
Elsevier
external identifiers
  • wos:000286715200018
  • scopus:78751591018
ISSN
0010-2180
DOI
10.1016/j.combustflame.2010.09.021
language
English
LU publication?
yes
id
717ee096-8727-475b-ad41-aaadf1e52e2a (old id 1878113)
date added to LUP
2011-04-14 09:25:14
date last changed
2017-03-26 03:59:26
@article{717ee096-8727-475b-ad41-aaadf1e52e2a,
  abstract     = {In this letter we show that the use of slightly broadband laser sources like multimode alexandrite lasers for CH PLIF bears the danger of interferences from formaldehyde. Such interferences occur when the laser frequency is not carefully tuned to the B-X (0,0) R-branch band head at around 387.2 nm and manifest either in the appearance of an additional layer in the PLIF image or in a slight broadening of the actual CH layer. With careful frequency selection the formaldehyde signals were not observed. Suppression of the interferences is feasible by employing appropriate spectral filters. (C) 2010 The Combustion Institute. Published by Elsevier Inc. All rights reserved.},
  author       = {Kiefer, J. and Ossler, Frederik and Li, Zhongshan and Aldén, Marcus},
  issn         = {0010-2180},
  keyword      = {CH radical,PLIF imaging,Flame front,Formaldehyde},
  language     = {eng},
  number       = {3},
  pages        = {583--585},
  publisher    = {Elsevier},
  series       = {Combustion and Flame},
  title        = {Spectral interferences from formaldehyde in CH PLIF flame front imaging with broadband B-X excitation},
  url          = {http://dx.doi.org/10.1016/j.combustflame.2010.09.021},
  volume       = {158},
  year         = {2011},
}