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Radical detection in harsh environments by means of laserinduced fluorescence using a single bidirectional optical fiber
Publikationstyp
Journal Article
Date Issued
2012-10-01
Sprache
English
Author(s)
Volume
109
Issue
1
Start Page
19
End Page
26
Citation
Applied Physics B: Lasers and Optics 109 (1): 19-26 (2012)
Publisher DOI
Scopus ID
Publisher
Springer
A new experimental method is described enabling detection of hydroxyl radicals (OH) by laserinduced fluorescence in high-temperature gas-phase reactions. This is accomplished by means of a bidirectional optical fiber probe, which is of interest for applications where optical access is limited. An optical setup that allows simultaneous excitation and detection of fluorescence using one and the same fiber has been developed. Complications resulting from coupling as well as laser-induced scattering are addressed, and different fibers are compared with regard to core material composition and geometric collection efficiency. On this basis, a suitable fiber is identified, and OH detection and profile measurements are demonstrated in a premixed laminar flame as reference experiment.
DDC Class
540: Chemistry