Production of a toroidal plasma in a poloidal heliotron magnetic field

Journal Article · Mon Mar 01 04:00:00 EST 1976 · Sov. J. Plasma Phys. (Engl. Transl.); (United States)

OSTI ID:7136609

Zykov, V G; Karpukhin, V I; Lonin, Y F; Rudnev, N I; Podteregera, N N; Skibenko, A I; Fomin, I P

The equilibrium and confinement of an injected plasma have been studied in a poloidal heliotron magnetic field, which is a system which has an average min H. The decay constants and radial profiles of the plasma density have been measured as functions of the parameters of the magnet system by microwave location and with magnetic, Langmuir, and diamagnetic probes. The macroscopic toroidal drift and fluctuations in the plasma density can be suppressed by the average min H of the heliotron system if the toroidal magnetic field is modulated at a depth corresponding to the ''diverter'' regime and if the ''coupling length'' is L/sub co/approximately-less-than2..pi..R..sqrt..a/R. Experiments were carried out at various charged-particle energies; at a low energy (Tapprox.10 eV) the density decay constant is governed by the loss of particles at the supports of the coils producing the opposed magnetic field. At T/sub i/approx.100--200 eV, the confinement is limited by the interaction of the plasma with the neutral gas liberated from the walls of the vacuum chamber. (AIP)

• Research Organization: Physicotechnical Institute, Academy of Sciences of the Ukrainian SSR, Khar'kov
• OSTI ID: 7136609
• Journal Information: Sov. J. Plasma Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Plasma Phys. (Engl. Transl.); (United States) Vol. 2:2; 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
ANNULAR SPACE
CLOSED PLASMA DEVICES
CONFIGURATION
CONFINEMENT
HELIOTRON
MAGNETIC FIELDS
PLASMA CONFINEMENT
PLASMA DENSITY
THERMONUCLEAR DEVICES
TOROIDAL CONFIGURATION
VARIATIONS