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Application of continuous-wave cavity ring-down spectroscopy to laminar flames

Humphries, Gordon S. and Burns, Iain S. and Lengden, Michael (2016) Application of continuous-wave cavity ring-down spectroscopy to laminar flames. IEEE Photonics Journal, 8 (1). ISSN 1943-0655

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Abstract

In this paper we describe the application of diode laser continuous-wave cavity ring-down spectroscopy (cw-CRDS) to in-situ flame diagnostics. Spectra of the P17e acetylene feature at 1535.4 nm were recorded in a premixed laminar ethylene/air flame. The overall absorption of the feature was measured to be ≈ 1.5×10−4 cm−1 a short distance above the reaction zone for a flame fuel equivalence ratio of 1.66, and the minimum detection limit (3σ) of the system was calculated to be1.2×10−5 cm−1. This demonstrates the potential of the technique for the measurement of weakly absorbing species in flames. Finally, we discuss the advantages and limitations of the cw-CRDS technique for flame measurements.

Item type: Article
ID code: 55233
Notes: (c) 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.
Keywords: cw-CRDS , combustion, cavity ring-down, diode laser , Electrical engineering. Electronics Nuclear engineering, Electrical and Electronic Engineering
Subjects: Technology > Electrical engineering. Electronics Nuclear engineering
Department: Faculty of Engineering > Electronic and Electrical Engineering
Faculty of Engineering > Chemical and Process Engineering
Technology and Innovation Centre > Continuous Manufacturing and Crystallisation (CMAC)
Technology and Innovation Centre > Sensors and Asset Management
Depositing user: Pure Administrator
Date deposited: 05 Jan 2016 14:06
Last modified: 21 Oct 2017 00:23
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URI: https://strathprints.strath.ac.uk/id/eprint/55233
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