Evolution of the plasma density in the Tuman-3 tokamak

Journal Article · Wed Jul 01 04:00:00 EDT 1987 · Sov. J. Plasma Phys. (Engl. Transl.); (United States)

OSTI ID:5504800

Baranov, Y F; Bogdanova, N E; Golant, V E; Lebedev, S V; Lipin, B M; Sakharov, N V; Fedorov, V I; Shakhovets, K G

The sawtooth oscillations of the plasma density and the density decay upon the closure of the gas puffing valve in the Tuman-3 tokamak have been simulated mathematically. The existing density decay curves agree well with the curves calculated according to the Alcator scaling for the diffusion coefficient. The amplitude of the sawtooth oscillations yields a pinching velocity at the center of the plasma column which is close to the neoclassical value. In addition, an analytic solution has been found for the diffusion equation along with a kinetic equation for the distribution function of the neutrals in a model problem which describes the qualitative aspects of the particle balance in a tokamak.

• Research Organization: A. F. Ioffe Physicotechnical Institute, Academy of Sciences of the USSR, Leningrad
• OSTI ID: 5504800
• Journal Information: Sov. J. Plasma Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Plasma Phys. (Engl. Transl.); (United States) Vol. 13:7; 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
CHARGE EXCHANGE
CLOSED PLASMA DEVICES
DIFFUSION
DISTRIBUTION FUNCTIONS
ELECTRIC HEATING
FUNCTIONS
HEATING
IMPURITIES
JOULE HEATING
LIMITERS
NEOCLASSICAL TRANSPORT THEORY
OSCILLATIONS
PINCH EFFECT
PLASMA DENSITY
PLASMA HEATING
RESISTANCE HEATING
THERMONUCLEAR DEVICES
TOKAMAK DEVICES
TRANSPORT THEORY
TUMAN DEVICES