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| Abstract |
The interaction between the universal drift wave and the convective cell in the shearless slab geometry is investigated using a kinetic-fluid model based on nonlinear gyro-kinetic equations. It is fou...nd that the convective cell is nonlinearly excited in a way, which is similar to the zonal flow generation of ITG turbulence. On the other hand, if we introduce the large ion-ion collision effect, the zonal flow is damped and instead the streamer and finite ky modes are excited in the convective cell mode. As the result, the flux is larger than the one without collision. The forward cascade is observed in kz space and the forward/inverse cascade is observed in ky space in the time evolution of energy spectrum.show more
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KJ00004169652