Gas Phase Oxygen Quenching Studies of Ketone Tracers for Laser-Induced Fluorescence Applications in Nitrogen Bath Gas
Data(s) |
2014
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Resumo |
In this paper we report the quantitative oxygen quenching effect on laser-induced fluorescence of acetone, methyl ethyl ketone, and 3-pentanone at low pressures (approximate to 700torr) with oxygen partial pressures up to 450torr. Nitrogen was used as a bath gas in which these molecular tracers were added in different quantities according to their vapor pressure at room temperature. These tracers were excited by using a frequency-quadrupled, Q-switched, Nd:YAG laser (266nm). Stern-Volmer plots were found to be linear for all the tracers, suggesting that quenching is collisional in nature. Stern-Volmer coefficients (k(sv)) and quenching rate constants (k(q)) were calculated from Stern-Volmer plots. The effects of oxygen on the laser-induced fluorescence of acetone, methyl ethyl ketone, and 3-pentanone were compared with each other. Further, the Smoluchowski theory was used to calculate the quenching parameters and compared with the experimental results. |
Formato |
application/pdf |
Identificador |
http://eprints.iisc.ernet.in/47877/1/SPE_LET_47-1_12_2-14 Shelar, VM and Hegde, GM and Umesh, G and Jagadeesh, G and Reddy, KPJ (2014) Gas Phase Oxygen Quenching Studies of Ketone Tracers for Laser-Induced Fluorescence Applications in Nitrogen Bath Gas. In: SPECTROSCOPY LETTERS, 47 (1). pp. 12-18. |
Publicador |
TAYLOR & FRANCIS INC |
Relação |
http://dx.doi.org/10.1080/00387010.2013.775463 http://eprints.iisc.ernet.in/47877/ |
Palavras-Chave | #Aerospace Engineering (Formerly, Aeronautical Engineering) #Centre for Nano Science and Engineering |
Tipo |
Journal Article PeerReviewed |