Spectral interferences from formaldehyde in CH PLIF flame front imaging with broadband B-X excitation
(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.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1878113
- author
- Kiefer, J. ; Ossler, Frederik LU ; Li, Zhongshan LU and Aldén, Marcus LU
- organization
- publishing date
- 2011
- 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
- 2016-04-01 14:16:40
- date last changed
- 2022-01-27 23:45:28
@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}}, keywords = {{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}}, doi = {{10.1016/j.combustflame.2010.09.021}}, volume = {{158}}, year = {{2011}}, }