Patent Number: 
Section: claims

1. A particle beam emitter comprising:a hollow particle beam tube having a first end portion, a second end portion, and a longitudinal axis; andan electromagnetic system comprising a voltage supply electrically coupled to the hollow particle beam tube and configured to generate a primary electrical current flowing axially in the hollow particle beam tube from the first end portion towards the second end portion, whereby a primary magnetic field associated with the primary electrical current is operable to induce a secondary electrical current in a plasma located within the hollow particle beam tube, the secondary electrical current flowing generally axially within the plasma and causing the plasma to contract inwardly towards the longitudinal axis. 2. The particle beam emitter of claim 1, further comprising a plurality of electromagnetic coils aligned axially with and surrounding at least a portion of the hollow particle beam tube for generating an axial magnetic field within the hollow particle beam tube. 3. The particle beam emitter of claim 2, further comprising an insulation member positioned between the plurality of electromagnetic coils and the hollow particle beam tube. 4. The particle beam emitter of claim 1, further comprising a pair of electromagnets positioned exterior to the hollow particle beam tube and rotatable about the longitudinal axis. 5. The particle beam emitter of claim 1, wherein the voltage supply is configured to generate the primary electrical current by creating a potential difference between the first end portion and the second end portion. 6. The particle beam emitter of claim 1, wherein the first end portion is configured to receive plasma from a fuel injector. 7. The particle beam emitter of claim 6, further comprising a pressure valve positioned between the fuel injector and the first end portion of the hollow particle beam tube. 8. The particle beam emitter of claim 1, wherein the hollow particle beam tube is made from at least one of tungsten and graphite. 9. The particle beam emitter of claim 1, wherein the hollow particle beam tube comprises a hollow graphene cylinder having an inner surface coated with tantalum hafnium carbide.