Search for dissertations about: "tokamak"

Showing result 1 - 5 of 91 swedish dissertations containing the word tokamak.

  1. 1. Global Turbulent EquiPartition (TEP) in Tokamak Plasma

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Igor A. Ivonin; Uppsala universitet.; [2001]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Astronomy; turbulent plasma; TEP; scaling laws; transport barrier; tokamak; Astronomi; NATURAL SCIENCES Physics Astronomy and astrophysics; NATURVETENSKAP Fysik Astronomi och astrofysik; Space and Plasma Physics; rymd- och plasmafysik;

    Abstract : We studied analytically and numerically the establishment of global turbulent equipartition (TEP) of magnetised electrons in a tokamak plasma. This allows us to investigate self-consistently the inhomogeneous distributions of the plasma density, the electron and the ion temperatures, the generation of radial electric field and the poloidal and the toroidal rotation in the turbulent tokamak plasma. READ MORE

  2. 2. Radially global neoclassical transport in tokamak pedestals

    University dissertation from Gothenburg : Chalmers tekniska högskola

    Author : Stefan Buller; [2017]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; tokamak; transport; global effects; collisional transport; fusion; drift-kinetics; plasma physics;

    Abstract : Nuclear fusion has the potential to become a sustainable energy sourcein the foreseeable future. The most developed system for fusion powerproduction is the tokamak, which magnetically confines a plasma at highenough temperature for fusion reactions to take place. READ MORE

  3. 3. Drift-Type Waves in Rotating Tokamak Plasma

    University dissertation from Uppsala : Institutionen för astronomi och rymdfysik

    Author : Elina Asp; Vladimir Pavlenko; Hans Nordman; [2003]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Space and plasma physics; fusion; plasma; tokamak; rotation; drift; ship; ITG; TE; Landau; Te Ti; hot-electron; confinement; stiffness; Weiland; Rymd- och plasmafysik; NATURAL SCIENCES Physics Geocosmophysics and plasma physics Space physics; NATURVETENSKAP Fysik Geokosmofysik och plasmafysik Rymdfysik; Space and Plasma Physics; rymd- och plasmafysik;

    Abstract : The concept of energy production through the fusion of two light nuclei has been studied since the 1950’s. One of the major problems that fusion scientists have encountered is the confinement of the hot ionised gas, i.e. the plasma, in which the fusion process takes place. READ MORE

  4. 4. Lower hybrid current drive in the Tore Supra tokamak

    University dissertation from Uppsala : Institutionen för astronomi och rymdfysik

    Author : Emelie Nilsson; [2014]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; fusion plasma physics; fast electron dynamics; launcher; tokamak; radio frequency waves; lower hybrid current drive;

    Abstract : To control and extract energy from nuclear fusion reactions, a mixture of deuterium and tritium gases must be heated to temperatures on the order of 100 million degrees, whilst maintaining a sufficiently high density. The main difficulty is to confine the ionised gases, i.e. plasma, until the rate of fusion reactions becomes large enough. READ MORE

  5. 5. Gyrokinetic simulations of microturbulence and transport in tokamak plasmas

    University dissertation from Gothenburg : Chalmers tekniska högskola

    Author : Daniel Tegnered; [2017]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; ITG; Joint European Torus; impurities; transport; fusion; TEM; tokamak; turbulence; plasma physics; gyrokinetics;

    Abstract : Fusion power is one of few viable and sustainable means of energy production. The tokamak is arguable the most mature technology to magnetically confine fusion plasmas. In these devices, heat and particle transport is dominated by small-scale turbulent fluctuations. READ MORE