High-Beta Plasma Behaviour in a Canted Mirror
R. A. Dandl, H. O. Eason, A. C. England, and J.
Oak Ridge National Laboratory, Oak Ridge, Tenn., United States of
(Manuscript received 21 May 1973)
A high-beta hot-electron plasma was studied in an asymmetric magnetic
device with a variable cant angle. The plasma was produced by microwave
heating at a frequency corresponding to cold-electron-cyclotron
together with a higher frequency suitable for upper-off-resonance
The position of the high-beta plasma annulus was studied as a function
of cant angle and was found to correspond approximately to the position
of a midplane modulus-B contour. High-beta effects did modify the
location of the losses of energetic electrons into the loss cone but
little effect on the cold-plasma losses. Destabilization was not
when the line-tying of the plasma centre was reduced with glass end
An asymmetry of the cold-plasma loss with respect to the equatorial
was observed at small cant angles and an electric field model was
to explain this behaviour.
Ref: R. A. Dandl, H. O. Eason, A. C. England, and J.
C. Sprott, Nuclear Fusion 13, 693-701 (1973)
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