Driven, steady-state, stable plasmoids have been generated in an external axial magnetic field by rotating magnetic fields. The plasma equilibrium was stable for any value of beta between zero and unity. The plasmoid was free-standing, Well removed from the RF antenna and the limiters. Limits to plasmoid stability have been investigated, and it was found that the antenna near-fields can effectively stabilize gross Magneto-Hydrodynamic modes through the ...
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