Physics – Plasma Physics
Scientific paper
May 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993ppcn.conf...47o&link_type=abstract
In ESA, Fourth International Toki Conference on Plasma Physics and Controlled Nuclear Fusion p 47-52(SEE N94-22624 05-75)
Physics
Plasma Physics
Beam Injection, Plasma Currents, Plasma Heating, Plasma Temperature, Coulomb Collisions, Ion Injection, Joint European Torus, Magnetohydrodynamics, Toroidal Plasmas
Scientific paper
The present status of plasma heating in toroidal systems, for astrophysical plasma scientists, is reviewed. The main method of plasma heating in toroidal systems or tori is to utilize fast ions. The maximum ion temperature of 38 keV was achieved at the plasma center by Neutral Beam Injections (NBI's) in the JT-60U tokamak. Ripple trapped losses of fast ions produced by NBI's were measured also in the JT-60U. The first tokamak discharges in deuterium-tritium fuelled mixtures were carried out successfully in the Jet European Torus (JET) tokamak. These experimental results are compared with the theoretical predictions based on the Coulomb collisions. The recent NBI experiments and the results are compared with theoretical predictions based on Coulomb collisions. Related to plasma heatings the current drive are discussed placing an emphasis on the neoclassical current (bootstrap current).
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