Stone, D, Blitz, M orcid.org/0000-0001-6710-4021, Ingham, T et al. (3 more authors) (2016) An instrument to measure fast gas phase radical kinetics at hight temperatures and pressures. Review of Scientific Instruments, 87. 054102. ISSN 0034-6748
Abstract
Fast radical reactions are central to the chemistry of planetary atmospheres and combustion systems. Laser-induced fluorescence is a highly sensitive and selective technique that can be used to monitor a number of radical species in kinetics experiments, but is typically limited to low pressure systems owing to quenching of fluorescent states at higher pressures. The design and characterisation of an instrument is reported using laser-induced fluorescence detection to monitor fast radical kinetics (up to 25,000 s-1) at high temperatures and pressures by sampling from a high pressure reaction region to a low pressure detection region. Kinetics have been characterised at temperatures reaching 740 K and pressures up to 2 atm, with expected maximum operational conditions of up to ~ 900 K and ~ 5 atm. The distance between the point of sampling from the high pressure region and the point of probing within the low pressure region is critical to the measurement of fast kinetics. The instrumentation described in this work can be applied to the measurement of kinetics relevant to atmospheric and combustion chemistry.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2016, American Institute of Physics. This is an author produced version of a paper accepted for publication in Review of Scientific Instruments. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | High pressure; Laser induced chemistry; Laser induced fluorescence; High pressure instruments; Photodissociation |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemistry (Leeds) > Physical Chemistry (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 12 May 2016 10:40 |
Last Modified: | 05 Nov 2017 11:50 |
Published Version: | https://dx.doi.org/10.1063/1.4950906 |
Status: | Published |
Publisher: | American Institute of Physics (AIP) |
Identification Number: | 10.1063/1.4950906 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:99591 |