Collisional effects on coherent structures of zonal flows and turbulent transport

K. Itoh; K. Hallatschek; S. Toda; S. I. Itoh; P. H. Diamond; M. Yagi; H. Sanuki

doi:10.1088/0741-3335/46/5A/037

Collisional effects on coherent structures of zonal flows and turbulent transport

K. Itoh, K. Hallatschek, S. Toda, S. I. Itoh, P. H. Diamond, M. Yagi, H. Sanuki

Division of Nuclear Fusion Dynamics

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

The collisional effects on nonlinear coherent structures of zonal flows in a toroidal plasma are investigated. They weaken the flows and enhance turbulent transport. Expressions for the zonal flow velocity, scale length and the turbulent transport coefficients are obtained. In the limit of small collisional flow damping, the turbulent transport coefficient remains finite. A phase diagram is obtained, which shows the parameter domain where the zonal flow has finite amplitude.

Original language	English
Pages (from-to)	A335-A340
Journal	Plasma Physics and Controlled Fusion
Volume	46
Issue number	5 SUPPL. A
DOIs	https://doi.org/10.1088/0741-3335/46/5A/037
Publication status	Published - May 2004

All Science Journal Classification (ASJC) codes

Nuclear Energy and Engineering
Condensed Matter Physics

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AU - Diamond, P. H.

AU - Yagi, M.

AU - Sanuki, H.

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