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Return To: Session EXP1 - Particle Transport, Internal Transport Barriers,
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J. H. Harris , M. G. Shats , B. Blackwell ,
G. G. Borg , R. W. Boswell , A. D. Cheetham 1,
S. A. Dettrick , R. L. Dewar , H. J. Gardner , J. Howard ,
C. A. Michael , D. Miljak 2, D. L. Rudakov
Plasma Research Laboratory Australian National University
Canberra, ACT 0200 Australia
1 University of Canberra, ACT 2601 Australia
2 University of Sydney, NSW 2006 Australia
Abstract
Low density discharges produced by RF power of 50-100 kW at low
magnetic field in the H-1 heliac are used to study transitions in confinement
that are similar to those seen at high power in large devices. Probe
diagnostics can be used to make detailed measurements of the profiles of
plasma quantities, including the radial electric field. At transition, the
density increases by a factor of about two, the density profile steepens, and
the ion temperature increases. The transition is accompanied by a decrease in
plasma turbulence and changes in the radial electric field.
IAEA 1999