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Effects of applied dc radial electric fields on particle transport in a bumpy torus plasmaThe influence of applied dc radial electric fields on particle transport in a bumpy torus plasma is studied. The plasma, magnetic field, and ion heating mechanism are operated in steady state. Ion kinetic temperature is more than a factor of ten higher than electron temperature. The electric fields raise the ions to energies on the order of kilovolts and then point radially inward or outward. Plasma number density profiles are flat or triangular across the plasma diameter. It is suggested that the radial transport processes are nondiffusional and dominated by strong radial electric fields. These characteristics are caused by the absence of a second derivative in the density profile and the flat electron temperature profiles. If the electric field acting on the minor radius of the toroidal plasma points inward, plasma number density and confinement time are increased.
Document ID
19780053047
Document Type
Reprint (Version printed in journal)
Authors
Roth, J. R. (NASA Lewis Research Center Cleveland, Ohio, United States)
Date Acquired
August 9, 2013
Publication Date
June 1, 1978
Publication Information
Publication: IEEE Transactions on Plasma Science
Volume: PS-6
Subject Category
PLASMA PHYSICS
Distribution Limits
Public
Copyright
Other