Multichord particle-beam diagnostics of plasma columns

Journal Article · Sun Jul 01 04:00:00 EDT 1979 · Sov. J. Plasma Phys. (Engl. Transl.); (United States)

OSTI ID:5634544

Afrosimov, V V; Berezovskii, E L; Kislyakov, A I; Khudoleev, A V; Shchemelinin, S G

Methods are described for the multichord probing of plasma columns with keV atomic beams and for spatial analysis of the energy characteristics of the flux of charge-exchange atoms from plasmas. These methods have been used in the Tuman-2A tokamak to study the space--time evolution of the density and temperature profiles of the plasma ions during ohmic heating. The experimental data obtained are used to analyze the particle and energy balance for the plasma ions, through numerical solution of the diffusion and heat-conduction equations. The diffusion coefficient is found to be roughly 15 times the value predicted by neoclassical theory and in good agreement with that found from pseudoclassical estimates. As usual in tokamaks, the ion energy balance is governed by ion heating through Coulomb collisions with electrons and cooling, due primarily to the neoclassical ion thermal conductivity.

• Research Organization: A. F. Ioffe Physicotechnical Institute, Academy of Sciences of the USSR, Leningrad
• OSTI ID: 5634544
• Journal Information: Sov. J. Plasma Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Plasma Phys. (Engl. Transl.); (United States) Vol. 5:4; ISSN SJPPD
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700102* -- Fusion Energy-- Plasma Research-- Diagnostics
BEAM INJECTION
BEAMS
CHARGE EXCHANGE
CLOSED PLASMA DEVICES
ENERGY BALANCE
IMPURITIES
ION BEAMS
ION DENSITY
ION TEMPERATURE
IONIZATION
NEUTRAL ATOM BEAM INJECTION
PFIRSCH-SCHLUETER REGIME
PLASMA DIAGNOSTICS
THERMONUCLEAR DEVICES
TOKAMAK DEVICES
TUMAN DEVICES