Low-frequency drift wave in a tokamak

Journal Article · Thu Mar 01 04:00:00 EST 1984 · Sov. J. Plasma Phys. (Engl. Transl.); (United States)

OSTI ID:6402466

Ivanov, S D; Mazur, V A

The primary mechanism for the excitation of drift waves in a tokamak involves the collisions of trapped electrons and gives rise to waves with frequencies below the effective collision rate: ..omega..>..nu../sub e//epsilon. In a tokamak with fusion-level parameters this frequency is on the order or even less than the bounce frequency of the trapped ions ..nu../sub e//epsilon<..omega../sub bi/, so that the frequency of the waves which are excited is ..omega..<..omega../sub bi/. A drift wave in this new frequency region is analyzed. Its poloidal and radial structures are studied. The effects of various dissipative factors are studied. An instability condition is derived: Vertical Bard ln q /d ln n/sub 0/Vertical Bar

• Research Organization: Siberian Institute of Terrestrial Magnetism, the Ionosphere, and Radio Wave Propagation, Academy of Sciences of the USSR
• OSTI ID: 6402466
• Journal Information: Sov. J. Plasma Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Plasma Phys. (Engl. Transl.); (United States) Vol. 10:2; ISSN SJPPD
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700108* -- Fusion Energy-- Plasma Research-- Wave Phenomena
ANNULAR SPACE
CLOSED PLASMA DEVICES
COLLISIONS
CONFIGURATION
DRIFT INSTABILITY
ELECTRONS
ELEMENTARY PARTICLES
FERMIONS
INSTABILITY
LEPTONS
PLASMA DRIFT
PLASMA INSTABILITY
PLASMA MICROINSTABILITIES
SHEAR
SPACE
THERMONUCLEAR DEVICES
THERMONUCLEAR REACTORS
TOKAMAK DEVICES
TOROIDAL CONFIGURATION
TRAPPED ELECTRONS
TURBULENCE