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Large-scale dynamo produced by negative magnetic eddy diffusivities

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Figure

FIGURE  1  The  difference  (7fmin  -11)  between  the  minimum  (over  the  wavevector  k  directions) of the eddy  diffusivity  7f (k)  and the molecular diffusivity  11  vs
FIGURE  2  'fhe minimum  rfnnn  (over the  wavevector  k  directions)  of the magnetic eddy  diffusivity  rf (k)  vs
FIGURE  3  The  variation  of  the  eddy  diffusivity  !f (k)  with  respect  to  the  angle  (}

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