Abstract

Large shifts in the equilibrium position of the plasma column in the Phaedrus tandem mirror [Nucl. Fusion 25, 1213 (1985)] are observed when a 25 kW, 1 msec, 15.5 GHz microwave heating pulse (ω∼2ωce) is injected into one end cell of the device. The shift in the plasma column axial position occurs in all regions of the device, and is comparable in size to the initial plasma radius. The change in plasma position is a result of nonuniform electron heating produced by azimuthally asymmetric illumination of the plasma column by the microwave beam.

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