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dc.contributor.authorMCKENTY, PATRICK WILLIAM.
dc.creatorMCKENTY, PATRICK WILLIAM.en_US
dc.date.accessioned2011-10-31T18:31:16Zen
dc.date.available2011-10-31T18:31:16Zen
dc.date.issued1983en_US
dc.identifier.urihttp://hdl.handle.net/10150/187159en
dc.description.abstractThe steady-state structure of a tokamak scrape-off plasma within a divertor chamber is numerically modeled. The simulation code OAKLEAF approximates the relevant atomic and molecular hydrogenic physics within the plasma as well as examining the effects of several wall impact events including charged particle reflection, absorption, and re-emission, secondary electron emission, and the sputtering of wall material by incident particles. Results indicate the presence of a two parameter solution space. With appropriate choices for these parameters the simulation code produces the electrostatic potential and density profiles within the divertor system as well as snapshots of the particle distribution functions at several points in the chamber. Using the distribution function information the model determines the detailed particle fluxes incident to the divertor plate and calculates the resulting sputtering rates. A study of sputtering rates as a function of initial plasma temperature is then presented. The work concludes by reviewing the scope of the thesis and by making recommendations for future work in the area.
dc.language.isoenen_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.subjectComputer simulation.en_US
dc.subjectFusion reactor walls -- Data processing.en_US
dc.subjectTokamaks -- Data processing.en_US
dc.titleNUMERICAL SIMULATION OF WALL PLASMAS NEAR DIVERTOR NEUTRALIZER PLATES OR LIMITERS.en_US
dc.typetexten_US
dc.typeDissertation-Reproduction (electronic)en_US
dc.identifier.oclc690154035en_US
thesis.degree.grantorUniversity of Arizonaen_US
thesis.degree.leveldoctoralen_US
dc.identifier.proquest8324456en_US
thesis.degree.disciplineNuclear and Energy Engineeringen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.namePh.D.en_US
refterms.dateFOA2018-06-15T03:50:59Z
html.description.abstractThe steady-state structure of a tokamak scrape-off plasma within a divertor chamber is numerically modeled. The simulation code OAKLEAF approximates the relevant atomic and molecular hydrogenic physics within the plasma as well as examining the effects of several wall impact events including charged particle reflection, absorption, and re-emission, secondary electron emission, and the sputtering of wall material by incident particles. Results indicate the presence of a two parameter solution space. With appropriate choices for these parameters the simulation code produces the electrostatic potential and density profiles within the divertor system as well as snapshots of the particle distribution functions at several points in the chamber. Using the distribution function information the model determines the detailed particle fluxes incident to the divertor plate and calculates the resulting sputtering rates. A study of sputtering rates as a function of initial plasma temperature is then presented. The work concludes by reviewing the scope of the thesis and by making recommendations for future work in the area.


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