A blob-filament (or simply “blob”) is a magnetic-field-aligned plasma structure which is
considerably denser than the surrounding background plasma and highly localized in the …

The present status of zonal flow experiments is reviewed with the historical process to attain
the concept of zonal flows, which provides a new framework for understanding turbulence …

This paper reviews measurements of edge plasma turbulence in toroidal magnetic fusion
devices with an emphasis on recent results in tokamaks. The dominant feature of edge …

A novel mechanism for the generation and amplification of intrinsic rotation at the low-mode
to high-mode transition is presented. The mechanism is one where the net parallel flow is …

The first experimental evidence showing the connection between blob/hole formation and
zonal-flow generation was obtained in the edge plasma of the JET tokamak. Holes as well …

Abstract Experiments on HL-2A, DIII-D and EAST show that turbulence just inside the last
closed flux surface acts to reinforce existing sheared E× B flows in this region. This flow drive …

The present status of experiments on zonal flows in magnetic confinement experiments is
examined. The innovative use of traditional and modern diagnostics has revealed …

The energetic interaction between drift-wave turbulence and zonal flows is studied
experimentally in two-dimensional wave number space. The kinetic energy is found to be …

Poloidal and toroidal rotation has been recognized to play an important role in heat transport
and magnetohydrodynamic (MHD) stability in tokamaks and helical systems. It is well known …

This paper presents a novel, unified approach to the theory of turbulent transport of parallel
momentum by collisionless drift waves. The physics of resonant and nonresonant off …