caa a22 4500 445372184 CHVBK 20180317142951.0 cr unu---uuuuu 170323e20110301xx s 000 0 eng 10.1007/s00340-010-4181-9 doi (NATIONALLICENCE)springer-10.1007/s00340-010-4181-9 Fluoranthene laser-induced fluorescence at elevated temperatures and pressures: implications for temperature-imaging diagnostics [Elektronische Daten] [M. Kühni, C. Morin, P. Guibert] The objective of this study is to develop a quantitative measurement of temperature from fluoranthene fluorescence under conditions with elevated temperatures and pressures. Absorption and fluorescence of fluoranthene are studied in a pressure and temperature range of 0.1-4MPa and 473-873K for the two excitation wavelengths of266 and 355nm. The influence of thermodynamic parameters such as pressure, temperature and gas composition is characterized in a high-pressure and high-temperature facility. When increasing the pressure, the vibrational relaxation mechanisms are favored, which involves an increase of the fluorescence quantum yield. Concerning the temperature effect, the fluorescence decreases with increasing temperature, this is explained by efficient radiative mechanisms of intersystem crossing. The quenching effect is strongly efficient in air, with a fluorescence evolution described by the Stern-Volmer relation. Over the temperature range studied, the fluorescence quantum yield decreases exponentially by two orders of magnitude. From the temperature dependence of fluoranthene fluorescence in different ambient gases for 266 and 355nm excitation, the potential temperature measurements in homogeneously and inhomogeneously seeded systems are suggested: the single-color detection technique, the single-excitation two-color detection technique and the dual-excitation wavelength technique. Springer-Verlag, 2010 Kühni M. Institut Jean Le Rond d'Alembert—CNRS UMR 7190, Université Pierre et Marie Curie (Paris 6), 2, place de la Gare de Ceinture, 78210, Saint-Cyr-l'Ecole, France aut Morin C. Institut Jean Le Rond d'Alembert—CNRS UMR 7190, Université Pierre et Marie Curie (Paris 6), 2, place de la Gare de Ceinture, 78210, Saint-Cyr-l'Ecole, France aut Guibert P. Institut Jean Le Rond d'Alembert—CNRS UMR 7190, Université Pierre et Marie Curie (Paris 6), 2, place de la Gare de Ceinture, 78210, Saint-Cyr-l'Ecole, France aut Applied Physics B Springer-Verlag 102/3(2011-03-01), 659-671 0946-2171 102:3<659 2011 102 340 https://doi.org/10.1007/s00340-010-4181-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00340-010-4181-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kühni M. Institut Jean Le Rond d'Alembert—CNRS UMR 7190, Université Pierre et Marie Curie (Paris 6), 2, place de la Gare de Ceinture, 78210, Saint-Cyr-l'Ecole, France aut NATIONALLICENCE 700 1- Morin C. Institut Jean Le Rond d'Alembert—CNRS UMR 7190, Université Pierre et Marie Curie (Paris 6), 2, place de la Gare de Ceinture, 78210, Saint-Cyr-l'Ecole, France aut NATIONALLICENCE 700 1- Guibert P. Institut Jean Le Rond d'Alembert—CNRS UMR 7190, Université Pierre et Marie Curie (Paris 6), 2, place de la Gare de Ceinture, 78210, Saint-Cyr-l'Ecole, France aut NATIONALLICENCE 773 0- Applied Physics B Springer-Verlag 102/3(2011-03-01), 659-671 0946-2171 102:3<659 2011 102 340 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer