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Author Good, T. N. ♦ Thompson, H. R. (Jr.) ♦ Rynn, N.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PLASMA PHYSICS AND FUSION TECHNOLOGY ♦ COLLISIONAL PLASMA ♦ AFTERGLOW ♦ ICR HEATING ♦ PARTICLE LOSSES ♦ STABILIZATION ♦ TRAPPING ♦ MAGNETIC MIRRORS ♦ PLASMA CONFINEMENT ♦ PLASMA DIAGNOSTICS ♦ BARIUM ♦ DISTRIBUTION FUNCTIONS ♦ FLUORESCENCE ♦ FLUTE INSTABILITY ♦ ION-ION COLLISIONS ♦ IONS ♦ LASERS ♦ SYMMETRY ♦ VELOCITY ♦ ALKALINE EARTH METALS ♦ CHARGED PARTICLES ♦ COLLISIONS ♦ CONFINEMENT ♦ ELEMENTS ♦ FUNCTIONS ♦ HEATING ♦ HIGH-FREQUENCY HEATING ♦ INSTABILITY ♦ ION COLLISIONS ♦ LUMINESCENCE ♦ METALS ♦ OPEN PLASMA DEVICES ♦ PLASMA ♦ PLASMA HEATING ♦ PLASMA INSTABILITY ♦ PLASMA MACROINSTABILITIES ♦ THERMONUCLEAR DEVICES ♦ Fusion Energy- Plasma Research- Confinement, Heating, & Production ♦ Fusion Energy- Plasma Research- Diagnostics
Abstract Experiments were conducted using a barium plasma in a simple axisymmetric mirror machine that was stabilized against the magnetic curvature-driven interchange mode by surface line tying. Ion cyclotron resonance heating was applied to heat ions, producing a mirror-trapped ion population. The ion-velocity distribution function was diagnosed nonperturbatively by using laser-induced fluorescence techniques. The rf heated distribution was a non-Maxwellian in f/sub I/(v/sub perpendicular/), and a sloshing distribution in f/sub I/(v/sub parallel/). When the plasma source was cut off, the plasma decay was studied to determine the confinement properties of the plasma afterglow and the effects of the stabilizing blanket. Mirror-trapped ions were lost axially at the classical ion--ion collision rate. Analysis of the temporal evolution of radial profiles of ion-energy density, in the afterglow, indicates that axial loss rates dominanted over radial losses.
Educational Use Research
Learning Resource Type Article
Publisher Date 1988-05-01
Publisher Department Department of Physics, University of California, Irvine, California 92717
Publisher Place United States
Journal Phys. Fluids
Volume Number 31
Issue Number 5
Organization Department of Physics, University of California, Irvine, California 92717


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