Ion thermal conductivity associated with cyclotron heating in a tokamak

Journal Article · Thu May 01 04:00:00 EDT 1986 · Sov. J. Plasma Phys. (Engl. Transl.); (United States)

OSTI ID:6990142

Shurygin, R V; Yushmanov, P N

The additional ion transport during cyclotron heating of a plasma in the region of low collision frequencies is analyzed. Both the direct effect of quasilinear collisions between particles and waves and the poloidal nonuniformity of the electric potential, a consequence of the enrichment of the trapped-particle region, are taken into account in the description of the effect of RF fields on the plasma. It is found that, despite the results of earlier theoretical papers, the ion heat flux cannot differ greatly from the neoclassical value, even if quasilinear collisions greatly exceed Coulomb collisions. The poloidal nonuniformity of the electric potential is shown to dominate the ion transport. The change which occurs in the fraction of trapped particles here leads to a decrease (ion cyclotron resonance) in the radial flux of ions and can explain the change observed experimentally in the ion confinement during cyclotron heating of plasmas.

• Research Organization: I.V. Kurchatov Institute of Atomic Energy, Moscow
• OSTI ID: 6990142
• Journal Information: Sov. J. Plasma Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Plasma Phys. (Engl. Transl.); (United States) Vol. 12:5; ISSN SJPPD
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700101* -- Fusion Energy-- Plasma Research-- Confinement
Heating
& Production
BANANA REGIME
CLOSED PLASMA DEVICES
CYCLOTRON RESONANCE
ELECTRONS
ELEMENTARY PARTICLES
FERMIONS
HEATING
HIGH-FREQUENCY HEATING
LEPTONS
NEOCLASSICAL TRANSPORT THEORY
PHYSICAL PROPERTIES
PLASMA
PLASMA HEATING
QUASILINEAR PROBLEMS
RESONANCE
THERMAL CONDUCTIVITY
THERMODYNAMIC PROPERTIES
THERMONUCLEAR DEVICES
TOKAMAK DEVICES
TRANSPORT THEORY
TRAPPED ELECTRONS
TRAPPING