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dc.contributor.authorTian, Bo
dc.contributor.authorGao, Y.
dc.contributor.authorBalusamy, S.
dc.contributor.authorHochgreb, S.
dc.date.accessioned2020-04-24T15:07:33Z
dc.date.available2020-04-24T15:07:33Z
dc.date.issued2015-06-26
dc.identifier.issn0946-2171
dc.identifier.doi10.1007/s00340-015-6156-3
dc.identifier.urihttp://hdl.handle.net/10545/624729
dc.description.abstractAccurate measurement techniques for in situ determination of soot are necessary to understand and monitor the process of soot particle production. One of these techniques is line-of-sight extinction, which is a fast, low-cost and quantitative method to investigate the soot volume fraction in flames. However, the extinction-based technique suffers from relatively high measurement uncertainty due to low signal-to-noise ratio, as the single-pass attenuation of the laser beam intensity is often insufficient. Multi-pass techniques can increase the sensitivity, but may suffer from low spatial resolution. To overcome this problem, we have developed a high spatial resolution laser cavity extinction technique to measure the soot volume fraction from low-soot-producing flames. A laser beam cavity is realised by placing two partially reflective concave mirrors on either side of the laminar diffusion flame under investigation. This configuration makes the beam convergent inside the cavity, allowing a spatial resolution within 200 μm, whilst increasing the absorption by an order of magnitude. Three different hydrocarbon fuels are tested: methane, propane and ethylene. The measurements of soot distribution across the flame show good agreement with results using laser-induced incandescence (LII) in the range from around 20 ppb to 15 ppm.en_US
dc.description.sponsorshipN/Aen_US
dc.language.isoenen_US
dc.publisherSpringer Science and Business Media LLCen_US
dc.relation.urlhttps://link.springer.com/article/10.1007/s00340-015-6156-3en_US
dc.relation.urlhttps://www.repository.cam.ac.uk/handle/1810/249034en_US
dc.subjectSoot Particle, Soot Volume Fraction, Flame Height, Tunable Diode Laser Absorption Spectroscopy, Soot Concentrationen_US
dc.titleHigh spatial resolution laser cavity extinction and laser-induced incandescence in low-soot-producing flamesen_US
dc.typeArticleen_US
dc.identifier.eissn1432-0649
dc.contributor.departmentUniversity of Cambridgeen_US
dc.identifier.journalApplied Physics Ben_US
dc.identifier.pii6156
dc.source.journaltitleApplied Physics B
dc.source.volume120
dc.source.issue3
dc.source.beginpage469
dc.source.endpage487
dcterms.dateAccepted2015-06-05
dc.author.detail786969en_US


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