Cavity ringdown laser absorption spectroscopy of a radio frequency discharge

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dc.contributor.advisorAdam, Allan
dc.contributor.authorRichards, Clark
dc.date.accessioned2023-06-07T19:44:35Z
dc.date.available2023-06-07T19:44:35Z
dc.date.issued2002
dc.description.abstractCavity ringdown spectroscopy is a direct absorption technique performed with laser sources that has higher sensitivity than many other absorption techniques. It measures the rate rather than the magnitude of absorption of a molecule in a high reflectance cavity. By scanning the laser over a range of frequencies, the absorption spectrum for the molecule can be determined. The goal of this thesis is to combine the cavity ringdown technique with an rf discharge, so as to study molecules such as free radicals, without the difficulties and uncertainties associated with the previously used laser optogalvanic technique. The sensitivity and applicability of the technique have been demonstrated by measuring a molecular band of the formyl radical (HCO) with an absorption sensitivity greater than 1 part in 10(6), and comparing it to that taken with laser optogalvanic spectroscopy.
dc.description.copyrightNot available for use outside of the University of New Brunswick
dc.format.extentiv, 43 pages
dc.format.mediumelectronic
dc.identifier.urihttps://unbscholar.lib.unb.ca/handle/1882/33298
dc.language.isoen_CA
dc.publisherUniversity of New Brunswick
dc.rightshttp://purl.org/coar/access_right/c_16ec
dc.subject.disciplinePhysics
dc.titleCavity ringdown laser absorption spectroscopy of a radio frequency discharge
dc.typesenior report
thesis.degree.disciplinePhysics
thesis.degree.fullnameBachelor of Science in Physics
thesis.degree.grantorUniversity of New Brunswick
thesis.degree.levelundergraduate
thesis.degree.nameB.Sc.

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