Optical Emission Diagnostics of a Non-equilibrium Atmospheric Pressure Helium Plasma Jet in Ambient Air

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dc.contributor.advisorDonnelly, Vincent M.
dc.contributor.advisorEconomou, Demetre J.
dc.contributor.committeeMemberWolfe, John C.
dc.creatorHernandez, Eduardo
dc.date.accessioned2018-07-10T18:49:56Z
dc.date.available2018-07-10T18:49:56Z
dc.date.createdMay 2016
dc.date.issued2016-05
dc.date.submittedMay 2016
dc.date.updated2018-07-10T18:49:56Z
dc.description.abstractNon-thermal atmospheric pressure plasmas are increasingly attracting more attention from the scientific community for their potential use in surface treatment and biomedical applications. Even though considerable progress has been made, investigation of the species generated at close proximity (1 mm to ~100 nm) to a surface has not been addressed due to limitations of common optical techniques. A novel approach using Optical Emission Spectroscopy (OES) that can probe emissions over this distance away from the surface has been investigated. Additionally, the presence of high energy VUV photons was confirmed and these can play an important role in the propagation of plasma jets. By performing temporally resolved OES, it was determined that excitation of O, N, OH, NO and N2+ is predominantly due to collisions between He* and their precursors, whereas the N2 emissions are due to electron impact that produces electronically excited N2.
dc.description.departmentChemical and Biomolecular Engineering, Department of
dc.format.digitalOriginborn digital
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/10657/3194
dc.language.isoeng
dc.rightsThe author of this work is the copyright owner. UH Libraries and the Texas Digital Library have their permission to store and provide access to this work. Further transmission, reproduction, or presentation of this work is prohibited except with permission of the author(s).
dc.subjectAtmospheric Pressure Plasma Jet
dc.subjectPlasma
dc.subjectLow Temperature Plasma
dc.subjectOptical Emission Diagnostics
dc.subjectHe metastable
dc.titleOptical Emission Diagnostics of a Non-equilibrium Atmospheric Pressure Helium Plasma Jet in Ambient Air
dc.type.dcmiText
dc.type.genreThesis
thesis.degree.collegeCullen College of Engineering
thesis.degree.departmentChemical and Biomolecular Engineering, Department of
thesis.degree.disciplineChemical Engineering
thesis.degree.grantorUniversity of Houston
thesis.degree.levelMasters
thesis.degree.nameMaster of Science

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