DYNAMO MECHANISM BY TRANSPORT FLOW

This paper discusses a novel magnetic field generation mechanism by a transport flow. The distinguishing feature of this mechanism compared with the conventional one by the convective flow lies in the intrinsic characteristics of the random motion, responsible for such transport flow, to break the line-tying effect. It is shown that anomalous plasma diffusion can induce a substantial amount of magnetic flux under certain conditions. It is also discussed that when the Bohm diffusion, typically observed in laboratory plasmas, is incorporated, the magnetic induction equation can be transformed to a type of heat equation which allows exact analytical solutions, admitting magnetic field amplification solutions.

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