Collective processes in the injection of fast neutrals into a tokamak with a noncircular cross section

Journal Article · Tue Mar 01 04:00:00 EST 1977 · Sov. J. Plasma Phys. (Engl. Transl.); (United States)

OSTI ID:7090071

Bardakov, V M; Mikhailovskii, A B

The collective processes which can occur when a beam of fast neutral atoms is injected into a tokamak of noncircular cross section are studied. These processes are assumed to be due to the excitation of Alfven waves by fast ions formed through ionization of the neutral atoms. The linear growth rate of the Alfven waves in a tokamak of noncircular cross section is calculated; the poloidal dependence of the poloidal magnetic field is taken into account. A problem of the O'Neil type is solved for the case of the noncircular tokamak. Equations describing the quasilinear relaxation of fast ions in a noncircular tokamak are derived. It is concluded that the nonlinear cross section can lead to the appearance of additional instability branches and to additional non-Coulombic relaxation processes.

• Research Organization: I. V. Kurchatov Institute of Atomic Energy, Moscow
• OSTI ID: 7090071
• Journal Information: Sov. J. Plasma Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Plasma Phys. (Engl. Transl.); (United States) Vol. 3:2; 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
700107* -- Fusion Energy-- Plasma Research-- Instabilities
ALFVEN WAVES
BEAM INJECTION
CLOSED PLASMA DEVICES
HYDROMAGNETIC WAVES
INSTABILITY
NEUTRAL ATOM BEAM INJECTION
PLASMA INSTABILITY
PLASMA MICROINSTABILITIES
QUASILINEAR PROBLEMS
THERMONUCLEAR DEVICES
TOKAMAK DEVICES
TRAPPING