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Turbulence-induced transport dynamo mechanism

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Title
Turbulence-induced transport dynamo mechanism
Author(s)
Chang-Mo Ryu
Publication Date
2021-09-01
Journal
Plasma Research Express, v.3, no.3, pp.1 - 9
Publisher
IOP Publishing Ltd
Abstract
© 2021 IOP Publishing Ltd.The transport dynamo mechanism, which describes the magnetic field generation by diffusion flow is reviewed. In this mechanism, the cross-field transport caused by the random motion of fluid breaks the frozen-flux approximation, and the resulting cross-field diffusion that can generate the magnetic field. Turbulence can play an important role in inducing such random motion. Compared to the conventional dynamo mechanism, this transport mechanism has several special features that the field generation can occur on a very slow time scale because the mechanism is mediated by diffusion and that this mechanism is practically meaningful only when there is density inhomogeneity. Turbulence can significantly enhance cross-field diffusion far beyond collisional transport. The physical meanings of the diffusion-generated magnetic fields are discussed in detail.
URI
https://pr.ibs.re.kr/handle/8788114/10352
DOI
10.1088/2516-1067/ac1c9a
ISSN
2516-1067
Appears in Collections:
Center for Relativistic Laser Science(초강력 레이저과학 연구단) > 1. Journal Papers (저널논문)
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