iibstract-The r.f. current drive by magnetic pumping of a single wave in collisionless plasma is calculated by using an adiabatic invariant method on the Vlasov equation. The self-consistent field efiect on this current is also calculated by the adiabatic invariant method, and the relation between the efficiency and the external pumping wave amplitude is obtained. Calculations are made. appropriate to an experimental test in a small high beta Tokamak.
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