Physics – Plasma Physics
Scientific paper
May 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993ppcn.conf...35w&link_type=abstract
In ESA, Fourth International Toki Conference on Plasma Physics and Controlled Nuclear Fusion p 35-40(SEE N94-22624 05-75)
Physics
Plasma Physics
1
Magnetohydrodynamic Stability, Magnetohydrodynamic Waves, Tokamak Devices, Toroidal Plasmas, Fusion Reactors, Magnetic Field Configurations, Plasma Physics, Sawtooth Waveforms
Scientific paper
Several magnetically confined toroidal plasmas for developing a fusion reactor core are explained. Magnetohydrodynamic (MHD) equilibrium and stability theory is discussed, and MHD instabilities are characterized according to the free energy source. Several well known observations of MHD instabilities in tokamaks and helical systems are discussed, associated with theoretical models. Sawtooth oscillations are the most typical phenomena commonly observed in tokamaks. Recently the similar sawtooth type oscillations were observed in Heliotron E. The latter is a new phenomenon driven by pressure gradient. MHD phenomena induced by high energy ions are fishbone oscillations and TAE (Toroidal Alfven Eigenmode) in tokamaks. Recently loss of high energy particles induced by the sawtooth oscillations are also observed in Heliotron E. Future direction of MHD studies in fusion plasma research is mentioned.
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