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An intense relativistic-electron beam ring of the current above 30 kA was used to confine a hot plasma. The ring was formed in a toroidal device SPAC-V by a pulse injection of e-beam, using the plasma-anode method. Induced return currents of the plasma affected the ring formation. The lifetime of the ring reached 1.6 ms during which time evolutions of several parameters like the poloidal βp were studied.
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