Simultaneous single-shot imaging of H and O atoms in premixed turbulent flames using femtosecond two-photon laser-induced fluorescence
(2023) In Optics Express 31(8). p.12932-12943- Abstract
A method based on femtosecond two-photon excitation has been developed for simultaneous visualization of interference-free fluorescence of H and O atoms in turbulent flames. This work shows pioneering results on single-shot simultaneous imaging of these radicals under non-stationary flame conditions. The fluorescence signal, showing the distribution of H and O radicals in premixed CH4/O2 flames was investigated for equivalence ratios ranging from ϕ = 0.8 to ϕ = 1.3. The images have been quantified through calibration measurements and indicate single-shot detection limits on the order of a few percent. Experimental profiles have also been compared with profiles from flame simulations, showing similar trends.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/c10a60dd-b555-481e-b453-68467f4c2a8f
- author
- Ruchkina, Maria LU ; Raveesh, Meena LU ; Dominguez, Armand LU ; Bood, Joakim LU and Brackmann, Christian LU
- organization
- publishing date
- 2023-04-10
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Optics Express
- volume
- 31
- issue
- 8
- pages
- 12 pages
- publisher
- Optical Society of America
- external identifiers
-
- pmid:37157442
- scopus:85152483939
- ISSN
- 1094-4087
- DOI
- 10.1364/OE.479562
- language
- English
- LU publication?
- yes
- id
- c10a60dd-b555-481e-b453-68467f4c2a8f
- date added to LUP
- 2023-08-01 15:58:39
- date last changed
- 2024-08-10 10:02:12
@article{c10a60dd-b555-481e-b453-68467f4c2a8f, abstract = {{<p>A method based on femtosecond two-photon excitation has been developed for simultaneous visualization of interference-free fluorescence of H and O atoms in turbulent flames. This work shows pioneering results on single-shot simultaneous imaging of these radicals under non-stationary flame conditions. The fluorescence signal, showing the distribution of H and O radicals in premixed CH<sub>4</sub>/O<sub>2</sub> flames was investigated for equivalence ratios ranging from ϕ = 0.8 to ϕ = 1.3. The images have been quantified through calibration measurements and indicate single-shot detection limits on the order of a few percent. Experimental profiles have also been compared with profiles from flame simulations, showing similar trends.</p>}}, author = {{Ruchkina, Maria and Raveesh, Meena and Dominguez, Armand and Bood, Joakim and Brackmann, Christian}}, issn = {{1094-4087}}, language = {{eng}}, month = {{04}}, number = {{8}}, pages = {{12932--12943}}, publisher = {{Optical Society of America}}, series = {{Optics Express}}, title = {{Simultaneous single-shot imaging of H and O atoms in premixed turbulent flames using femtosecond two-photon laser-induced fluorescence}}, url = {{http://dx.doi.org/10.1364/OE.479562}}, doi = {{10.1364/OE.479562}}, volume = {{31}}, year = {{2023}}, }