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US 4,233,537 AGranted
Multicusp plasma containment apparatus
OwnerRudolf Limpaecherinventor
Life of this patent
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Abstract
It has been discovered that plasma containment by a chamber having multi-pole magnetic cusp reflecting walls in combination with electronic injection for electrostatic containment provides the means for generating magnetic field free quiescent plasmas for practical application in ion-pumps, electronic switches, and the like. 1250 "Alnico V" magnets 1/2".times.1/2".times.11/2" provide containment in one embodiment. Electromagnets embodying toroidal funneling extend the principle to fusion apparatus.
Claims16
Plasma containing apparatus comprising,
- (a) a container vacuum tight to maintain the plasma pressure,
- (b) a plasma chamber within said container,
- (c) said chamber having magnetic multipole ion reflecting walls made up of an array of at least thirty magnetic poles of alternating sign, and
- (d) means for injecting electrons into said chamber in sufficient quantity to maintain the resulting plasma at a substantial negative potential.
1 more element
Dependencies are inferred from the claim text.