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Electromagnetic plasma turbulence at hyperfine (i.e., electron gyroradius) scales is studied in the geometry of an advanced stellarator fusion experiment, Wendelstein 7-AS [H. Renner, Plasma Phys. Controlled Fusion 31, 1579 (1989)], by means of nonlinear gyrokinetic simulations. It is demonstrated that high-amplitude radial streamers may also exist in non-tokamak devices, raising the electron heat flux to experimentally relevant values. Moreover, some statistical characteristics of the fully developed turbulence are computed, highlighting the (co-)existence, nature, and role of self-generated zonal flows and fields.

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Authors: JENKO F, Max-Planck-Institut für Plasmaphysik, Euratom Association, Garching (DE);KENDL A, Max-Planck-Institut für Plasmaphysik, Euratom Association, Garching (DE)
Bibliographic Reference: An article published in: Physics of Plasmas -- October 2002 -- Volume 9, Issue 10, pp.4103-4106
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