Fluorescence lifetime imaging in a flame

被引：22

作者：

Ehn, A. ^{[1
]}

Johansson, O. ^{[1
]}

Bood, J. ^{[1
]}

Arvidsson, A. ^{[1
]}

Li, B. ^{[1
]}

Alden, M. ^{[1
]}

机构：

[1] Lund Univ, Div Combust Phys, S-22100 Lund, Sweden

来源：

PROCEEDINGS OF THE COMBUSTION INSTITUTE | 2011年 / 33卷

关键词：

Time-resolved spectroscopy; Lifetime imaging; Laser-induced fluorescence; Fluorescence quantum yield; LASER-INDUCED FLUORESCENCE; ATMOSPHERIC-PRESSURE FLAMES; ELEVATED-TEMPERATURES; PICOSECOND LASER; FORMALDEHYDE; SYSTEM; V=2;

D O I：

10.1016/j.proci.2010.05.083

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A novel method for two-dimensional fluorescence lifetime imaging is presented. The technique is demonstrated on averaged planar laser-induced fluorescence (PLIF) signals recorded in a flame. Although demonstrated on averaged images, the concept applies equally well to single-shot images. Formaldehyde was probed through pico-second excitation at 355 nm in a rich methane/oxygen flame (Phi = 2.6). Images were recorded with a dual ICCD camera detection setup with different gate characteristics of the two cameras. The recorded images were analyzed using simulated values of LIF signal detection to generate two-dimensional images of effective lifetimes. Measured lifetimes range from roughly 1 to 4.5 ns. The lifetime image data were used for quenching correction of the LIF images, which, after correction, showed better qualitative agreement compared to a formaldehyde concentration profile simulated with the GRI 3.0 mechanism. (C) 2010 The Combustion Institute. Published by Elsevier Inc. All rights reserved.

引用

页码：807 / 813

页数：7

共 19 条

[1]

[Anonymous], GRI 3 0

[2] Single-pulse collision-insensitive picosecond planar laser-induced fluorescence of OH Alpha(2)Sigma(+) (v'=2) in atmospheric-pressure flames [J].