Slow Formation and Sustainment of Spheromaks by a Coaxial Magnetized Plasma Source
- 4 July 1983
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 51 (1) , 39-42
- https://doi.org/10.1103/physrevlett.51.39
Abstract
Two steps have been taken towards determining if the flux absorption and relaxation properties of a spheromak will allow dc-powered electrodes to form and sustain a steady-state spheromak. Without changing the physical properties of the spheromak, the formation time was increased from an Alfvén time to a tearing time, reducing the coaxial source power from ∼ 10 GW to ∼ 500 MW. With use of ∼ 50 MW, spheromaks were formed and then sustained at constant density and field for 1 ms, much longer than a magnetic-energy decay time.Keywords
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