Probing contaminated aerosol clouds using remote filament induced breakdown spectroscopy

Authors: Daigle, Jean-François
Advisor: Chin, See Leang
Abstract: Remote Filament Induced Breakdown Spectroscopy (R-FIBS) was used for probing a cloud of aqueous aerosols containing a mixture of dissolved metallic salts. We demonstrated experimentally that it can be used as a sensitive sensing technique to remotely retrieve the composition of microdroplets in clouds located at a distance. In fact, fluorescence from all the metallic ions dissolved was observed. Moreover, these spectrally narrow atomic transitions excited by the low density plasma did not show any signal overlap. These characteristic spectra demonstrate that R-FIBS can be used to simultaneously recognize and distinguish every single metallic constituent dissolved inside such a cloud. The technique has been successfully tested for long range field test of 70 m with an aerosol cloud of droplets containing sodium chloride.
Document Type: Mémoire de maîtrise
Issue Date: 2008
Open Access Date: 20 April 2018
Permalink: http://hdl.handle.net/20.500.11794/25653
Grantor: Université Laval
Collection:Thèses et mémoires

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