Title:
Dielectric properties of cryogenic gases

dc.contributor.advisor Graber, Lukas
dc.contributor.advisor Pamidi, Sastry
dc.contributor.author Park, Chanyeop
dc.contributor.committeeMember Saeedifard, Maryam
dc.contributor.committeeMember Grijalva, Santiago
dc.contributor.committeeMember Habetler, Thomas
dc.contributor.committeeMember Walker, Mitchell
dc.contributor.department Electrical and Computer Engineering
dc.date.accessioned 2018-05-31T18:13:09Z
dc.date.available 2018-05-31T18:13:09Z
dc.date.created 2018-05
dc.date.issued 2018-02-02
dc.date.submitted May 2018
dc.date.updated 2018-05-31T18:13:09Z
dc.description.abstract With the goal of improving the dielectric strength of gaseous cryogens, this dissertation discusses the dielectric properties of cryogenic gas mixtures based on electron kinetics, dielectric modeling, and plasma diagnostics. The electron kinetics work involves the numerical analysis of electron ensembles in cryogenic gas mixtures. The results of the analysis qualitatively predict the varying dielectric strength of the cryogenic gas mixtures. The dielectric modeling work provides the quantitative predictions of gas dielectric strength in terms of breakdown voltages. Specifically, the work develops a new dielectric strength model that can accurately estimate the dielectric strength variations caused by the variation of cryogenic gas mixture composition. The plasma diagnostics work involves the design and development of a plasma experiment, which is used for measuring DC plasmas generated from potential cryogenic gas mixtures. By analyzing the measured results, the electron energy distribution function of each gas mixture is derived, which is subsequently used for calculating plasma parameters including plasma density and plasma temperature. Research tasks discussed in this dissertation are dedicated for the dielectric enhancement of gaseous cryogens, which is pivotal for the development of medium- and high-voltage superconducting power applications.
dc.description.degree Ph.D.
dc.format.mimetype application/pdf
dc.identifier.uri http://hdl.handle.net/1853/59855
dc.publisher Georgia Institute of Technology
dc.subject Dielectric gas
dc.subject Plasma
dc.subject Gas discharge physics
dc.subject Dielectric strength modeling
dc.subject Electron kinetics
dc.subject Dielectric breakdown
dc.title Dielectric properties of cryogenic gases
dc.type Text
dc.type.genre Dissertation
dspace.entity.type Publication
local.contributor.advisor Graber, Lukas
local.contributor.corporatename School of Electrical and Computer Engineering
local.contributor.corporatename College of Engineering
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relation.isOrgUnitOfPublication 5b7adef2-447c-4270-b9fc-846bd76f80f2
relation.isOrgUnitOfPublication 7c022d60-21d5-497c-b552-95e489a06569
thesis.degree.level Doctoral
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