Geodesic acoustic modes in magnetic confinement devices
GD Conway, AI Smolyakov, T Ido - Nuclear Fusion, 2021 - iopscience.iop.org
Geodesic acoustic modes (GAMs) are ubiquitous oscillatory flow phenomena observed in
toroidal magnetic confinement fusion plasmas, such as tokamaks and stellarators. They are …
toroidal magnetic confinement fusion plasmas, such as tokamaks and stellarators. They are …
A review of zonal flow experiments
A Fujisawa - Nuclear Fusion, 2008 - iopscience.iop.org
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 …
the concept of zonal flows, which provides a new framework for understanding turbulence …
A review of experimental drift turbulence studies
GR Tynan, A Fujisawa, G McKee - Plasma Physics and …, 2009 - iopscience.iop.org
Experimental drift turbulence and zonal flow studies in magnetically confined plasma
experiments are reviewed. The origins of drift waves, transition to drift turbulence and drift …
experiments are reviewed. The origins of drift waves, transition to drift turbulence and drift …
Physics of zonal flows
K Itoh, SI Itoh, PH Diamond, TS Hahm, A Fujisawa… - Physics of …, 2006 - pubs.aip.org
Zonal flows, which means azimuthally symmetric band-like shear flows, are ubiquitous
phenomena in nature and the laboratory. It is now widely recognized that zonal flows are a …
phenomena in nature and the laboratory. It is now widely recognized that zonal flows are a …
Experimental investigation of geodesic acoustic mode spatial structure, intermittency, and interaction with turbulence in the DIII-D tokamak
Geodesic acoustic modes (GAMs) and zonal flows are nonlinearly driven, axisymmetric (m=
0 and n= 0) E× B flows, which are thought to play an important role in establishing the …
0 and n= 0) E× B flows, which are thought to play an important role in establishing the …
Spectral features of the geodesic acoustic mode and its interaction with turbulence in a tokamak plasma
The three-dimensional wavenumber and frequency spectrum for the geodesic acoustic
mode (GAM) has been measured in the HuanLiuqi-2A tokamak for the first time. The …
mode (GAM) has been measured in the HuanLiuqi-2A tokamak for the first time. The …
Spectral characteristics of geodesic acoustic mode in the HL-2A tokamak
The spectral characteristics of the geodesic acoustic mode (GAM) are investigated
systematically by applying the two-point correlation technique and bispectral analysis to …
systematically by applying the two-point correlation technique and bispectral analysis to …
In search of zonal flows by using direct density fluctuation measurements
Y Nagashima, K Itoh, SI Itoh, A Fujisawa… - Plasma Physics and …, 2007 - iopscience.iop.org
A method for zonal flow study by using direct density fluctuation measurements is proposed.
When ambient drift-wave turbulence is modulated by zonal flows (ie in the drift-wave-zonal …
When ambient drift-wave turbulence is modulated by zonal flows (ie in the drift-wave-zonal …
Observation of nonlinear couplings between coexisting kinetic geodesic acoustic modes in the edge plasmas of the HT-7 tokamak
Coexisting multi-geodesic acoustic modes (GAMs), especially coexisting dual GAMs, are
observed and studied through Langmuir probe arrays at the edge plasmas of the HT-7 …
observed and studied through Langmuir probe arrays at the edge plasmas of the HT-7 …
Intermittency of density fluctuations and zonal-flow generation in MAST edge plasmas
A Sladkomedova, I Cziegler, AR Field… - Journal of Plasma …, 2023 - cambridge.org
The properties of the edge ion-scale turbulence are studied using the beam emission
spectroscopy (BES) diagnostic on MAST. Evidence of the formation of large-scale high …
spectroscopy (BES) diagnostic on MAST. Evidence of the formation of large-scale high …