Neutral-atom balance in the plasma of the T-4 tokamak

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

OSTI ID:7241548

Izvozchikov, A B; Petrov, M P

The neutral-atom balance is of interest because it can cast light on the role played in the energy balance by the charge-exchange atoms which escape from the plasma and also because it can be used to determine the plasma ion temperature through an energy analysis of the charge-exchange atoms. A numerical procedure is described for calculating the balance of neutral atoms of the working gas for two typical discharge regimes in the T-4 tokamak (with deuterium and hydrogen); the results of such calculations are reported. The profiles of the atomic density over the plasma cross section and the energy distributions of the charge-exchange atoms escaping from the plasma are calculated. Comparison of the calculated energy distribution of the charge-exchange atoms with the distribution measured under the specified conditions in the T-4 makes it possible to determine the absolute profile of the atomic density over the plasma cross section. With this profile it is then possible to determine the integral energy loss of the plasma due to charge exchange. It is concluded on the basis of these calculations and their comparison with experiment that resonant charge exchange is not the primary channel for energy loss from the T-4 plasma. (AIP)

• Research Organization: A. F. Ioffe Physicotechnical Institute, Academy of Sciences of the USSR, Leningrad
• OSTI ID: 7241548
• 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
CHARGE EXCHANGE
CLOSED PLASMA DEVICES
CRYOGENIC FLUIDS
DEUTERIUM
ELEMENTS
ENERGY BALANCE
ENERGY LOSSES
ENERGY SPECTRA
FLUIDS
HYDROGEN
HYDROGEN ISOTOPES
IONIZATION
ISOTOPES
LIGHT NUCLEI
NONMETALS
NUCLEI
ODD-ODD NUCLEI
SPECTRA
STABLE ISOTOPES
THERMONUCLEAR DEVICES
TOKAMAK DEVICES