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Ion Pumping from a Mirror Trap by an External Rotating Field

Nikita V. Shabrov, Vladimir I. Khvesjuk

Fusion Science and Technology

Volume 26 / Number 2 / September 1994 / Pages 117-124


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A method to ensure increased radial losses for a selected population of particles from an axially symmetric magnetic trap is described. The method is based on the resonance action of a rotating perturbation magnetic field on the particles. The possible mechanisms and properties of the transverse transfer of particles in this case are discussed. The numerical investigations made with a one-particle approximation allow estimation of the efficiency of the proposed method of pumping. The ion pumping from the thermal barrier of a tandem mirror fusion reactor is considered as an example.

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