Skip to Main content Skip to Navigation
Journal articles

Fluorescence spectroscopy of anisole at elevated temperatures and pressures

Abstract : Laser-induced fluorescence of anisole as tracer of isooctane at an excitation wavelength of 266 nm was investigated for conditions relevant to rapid compression machine studies and for more general application of internal combustion engines regarding temperature, pressure, and ambient gas composition. An optically accessible high pressure and high temperature chamber was operated by using different ambient gases (Ar, N2, CO2, air, and gas mixtures). Fluorescence experiments were investigated at a large range of pressure and temperature (0.2–4 MPa and 473–823 K). Anisole fluorescence quantum yield decreases strongly with temperature for every considered ambient gas, due to efficient radiative mechanisms of intersystem crossing. Concerning the pressure effect, the fluorescence signal decreases with increasing pressure, because increasing the collisional rate leads to more important non-radiative collisional relaxation. The quenching effect is strongly efficient in oxygen, with a fluorescence evolution described by Stern–Volmer relation. The dependence of anisole fluorescence versus thermodynamic parameters suggests the use of this tracer for temperature imaging in specific conditions detailed in this paper. The calibration procedure for temperature measurements is established for the single-excitation wavelength and two-color detection technique.
Document type :
Journal articles
Complete list of metadata
Contributor : Julie Cagniard Connect in order to contact the contributor
Submitted on : Friday, March 18, 2022 - 11:30:24 AM
Last modification on : Saturday, September 24, 2022 - 12:20:05 PM



Toan Tran Khanh, Céline Morin, Manuel Kuhni, Philippe Guibert. Fluorescence spectroscopy of anisole at elevated temperatures and pressures. Applied Physics B - Laser and Optics, Springer Verlag, 2014, 115 (4), pp.461-470. ⟨10.1007/s00340-013-5626-8⟩. ⟨hal-03613126⟩



Record views