Radial and zonal modes in hyperfine-scale stellarator turbulence
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.
Bibliographic Reference: An article published in: Physics of Plasmas -- October 2002 -- Volume 9, Issue 10, pp.4103-4106
Availability: This article can be accessed online by subscribers, and can be ordered online by non-subscribers, at: http://ojps.aip.org/dbt/dbt.jsp?KEY=PHPAEN&Volume=9&Issue=10
Record Number: 200215474 / Last updated on: 2002-11-01
Original language: en
Available languages: en