Steady state compact toroidal plasma production

Induced nuclear reactions: processes – systems – and elements – Nuclear fusion – Plasma formed between spaced electrodes

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376107, 376128, 376143, 376145, G21B 100

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046018719

ABSTRACT:
Apparatus and method for maintaining steady state compact toroidal plasmas. A compact toroidal plasma is formed by a magnetized coaxial plasma gun and held in close proximity to the gun electrodes by applied magnetic fields or magnetic fields produced by image currents in conducting walls. Voltage supply means maintains a constant potential across the electrodes producing an increasing magnetic helicity which drives the plasma away from a minimum energy state. The plasma globally relaxes to a new minimum energy state, conserving helicity according to Taylor's relaxation hypothesis, and injecting net helicity into the core of the compact toroidal plasma. Controlling the voltage so as to inject net helicity at a predetermined rate based on dissipative processes maintains or increases the compact toroidal plasma in a time averaged steady state mode.

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Taylor, "Relaxation of Toroidal Plasma and Generation of Reverse Magnetic Fields," Physical Review Letters, vol. 33, 1974.

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