Periodic ejection of fast ions from a tokamak

Journal Article · Sat Sep 01 04:00:00 EDT 1984 · Sov. J. Plasma Phys. (Engl. Transl.); (United States)

OSTI ID:5816786

Belikov, V S; Kolesnichenko, Y I

A phenomenological system of two equations is proposed to describe the behavior of the fast-ion pressure and of the electromagnetic noise level in the plasma during the onset of an instability in a tokamak with intense injection of neutral atoms. It is assumed that the instability arises from a resonant interaction between particles and waves. This new model yields a picture of the oscillations in the amplitude of the electromagnetic field and of the fast-ion pressure which agrees not only qualitatively but also quantitatively with the results observed in the PDX tokamak. A general analysis has been carried out to determine the necessary conditions for the appearance of fishbone waves and to find the conditions under which steady-state turbulence is established in the plasma.

• Research Organization: Institute of Nuclear Studies, Academy of Sciences of the Ukrainian SSR
• OSTI ID: 5816786
• Journal Information: Sov. J. Plasma Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Plasma Phys. (Engl. Transl.); (United States) Vol. 10:5; 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
700105 -- Fusion Energy-- Plasma Research-- Plasma Kinetics-Theoretical-- (-1987)
BEAM INJECTION
CLOSED PLASMA DEVICES
INSTABILITY
LOSS CONE INSTABILITY
NEUTRAL ATOM BEAM INJECTION
PLASMA INSTABILITY
PLASMA MICROINSTABILITIES
PLASMA PRESSURE
THERMONUCLEAR DEVICES
TOKAMAK DEVICES
TURBULENCE