منابع مشابه
HCI Issues in Tokamak Fusion Plasmas
Thermonuclear fusion powers our universe and is a most promising option for electricity and hydrogen fuel generation within a future sustainable and environmentally benign energy scenario. We shortly describe the current status of magnetic fusion research on its way to the international tokamak experiment ITER, for which construction at the European site Cadarache (France) starts in the near fu...
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Microscopic potential turbulence in tokamak plasmas are investigated by a multi-samplevolume heavy ion beam probe. The wavenumber/frequency spectra S(k,ω) of the plasmas potential fluctuation as well as density fluctuation are obtained for the first time. The instantaneous turbulence-driven particle flux, calculated from potential and density turbulence has oscillations of which amplitude is ab...
متن کاملTransport equations in tokamak plasmas
Tokamak plasma transport equations are usually obtained by flux surface averaging the collisional Braginskii equations. However, tokamak plasmas are not in collisional regimes. Also, ad hoc terms are added for neoclassical effects on the parallel Ohm’s law, fluctuation-induced transport, heating, current-drive and flow sources and sinks, small magnetic field nonaxisymmetries, magnetic field tra...
متن کاملDrift-tearing magnetic islands in tokamak plasmas
A systematic fluid theory of nonlinear magnetic island dynamics in conventional low, large aspect-ratio, circular cross-section tokamak plasmas is developed using an extended magnetohydrodynamics model that incorporates diamagnetic flows, ion gyroviscosity, fast parallel electron heat transport, the ion sound wave, the drift wave, and average magnetic field-line curvature. The model excludes th...
متن کاملDust Grain Charging In Tokamak Plasmas
The presence of solid, micro-impurtities in tokamak plasmas has become a topic of great importance. Dust, originating from the reactor wall surfaces as a result plasma surface interactions, has the potential to cause serious safety hazards and confinement issues and therefore the transport of these particle contaminants in the plasma of an operational tokamak is therefore, a matter of great imp...
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ژورنال
عنوان ژورنال: Journal of Physics: Conference Series
سال: 2007
ISSN: 1742-6588,1742-6596
DOI: 10.1088/1742-6596/58/1/005