Propagation and damping of the fast Alfven wave in the Texas Tech Tokamak

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dc.creatorColeman, Phillip Dale
dc.date.accessioned2016-11-14T23:15:54Z
dc.date.available2011-02-18T20:23:59Z
dc.date.available2016-11-14T23:15:54Z
dc.date.issued1983-08
dc.degree.departmentElectrical and Computer Engineeringen_US
dc.description.abstractPropagation and damping of the fast Alfven wave has been investigated for a deuterium-hydrogen plasma in a small research Tokamak. Magnetic probes served as the principle diagnostic in studying the waves* dispersion characteristics, the eigenmode Q's and the radial profiles of the electrical field polarization. Results indicate that a simple cylindrical model is sufficient for predicting the waves* dispersion properties, Q measurements supply strong evidence that the fast wave damping is dependent on resonance layers in the plasma. The dependence of Q on percentage hydrogen in the predominantly deuterium plasma suggests that mode conversion of the fast wave to the ion Bernstein wave at the ion-ion hybrid resonance layer may be occurring. The measured field patterns differed substantially from theoretical expectations and no localized resonance layer effect was detected in the polarization profiles. However, a more quiescent plasma and better spatial resolution of the probe measurements may help in resolving some mode conversion effects.
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/2346/13737en_US
dc.language.isoeng
dc.publisherTexas Tech Universityen_US
dc.rights.availabilityUnrestricted.
dc.subjectPlasma heatingen_US
dc.subjectTokamaksen_US
dc.subjectPlasma wavesen_US
dc.subjectDamping (Mechanics)en_US
dc.titlePropagation and damping of the fast Alfven wave in the Texas Tech Tokamak
dc.typeDissertation

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