Analysis of multifrequency interferometry in a cylindrical plasma

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dc.contributor.advisorBengtson, Roger D.en
dc.contributor.advisorBreizman, Boris N.en
dc.creatorKraft, Daniela Juttaen
dc.date.accessioned2015-08-31T21:21:10Zen
dc.date.available2015-08-31T21:21:10Zen
dc.date.issued2006-08en
dc.description.abstractThis work was motivated by questions raised from multifrequency microwave interferometer measurements taken in a cylindrical plasma on the Variable Specific Impulse Magnetoplasma Rocket (VASIMR) project. Standard data analysis based on a thin beam model neglecting refraction yields inconsistent electron densities and density profiles for different frequencies. This work focuses on the development of a model for the wave propagation through cylindrical plasmas when the plasma radius is on the order of the beam waist. For the calculations presented a Gaussian beam profile and plasma spatial profile were assumed. Both refraction by density gradients and finite beam sizes are found to play important roles and explain polychromatic differences in the electron densities and profiles. Calculations for the new model are compared to a thin beam model not accounting for refraction and experimental data from VASIMR.en
dc.description.departmentPhysicsen
dc.format.mediumelectronicen
dc.identifier.urihttp://hdl.handle.net/2152/30475en
dc.language.isoengen
dc.relation.ispartofUT Electronic Theses and Dissertationsen
dc.rightsCopyright © is held by the author. Presentation of this material on the Libraries' web site by University Libraries, The University of Texas at Austin was made possible under a limited license grant from the author who has retained all copyrights in the works.en
dc.rights.restrictionRestricteden
dc.subjectVariable Specific Impulse Magnetoplasma Rocketen
dc.subjectVASIMRen
dc.subjectMultifrequency interferometeren
dc.subjectCylindrical plasmaen
dc.titleAnalysis of multifrequency interferometry in a cylindrical plasmaen
dc.typeThesisen
dc.type.genreThesisen
thesis.degree.departmentPhysicsen
thesis.degree.disciplinePhysicsen
thesis.degree.grantorThe University of Texas at Austinen
thesis.degree.levelMastersen
thesis.degree.nameMaster of Artsen

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