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). 3900110. 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.

    Creators(s): Humphries, Gordon S. ORCID logoORCID: https://orcid.org/0000-0002-4579-5471, Burns, Iain S. and Lengden, Michael;
    Item type:Article
    ID code:55233
    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:02 Mar 2021 01:24
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/55233
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