Non-local transport nature revealed by the research in transient phenomena of toroidal plasma

K Ida - Reviews of Modern Plasma Physics, 2022 - Springer
The non-local transport nature revealed by the research in transient phenomena of toroidal
plasma is reviewed. The following non-local phenomena are described: core temperature …

The E× B staircase of magnetised plasmas

G Dif-Pradalier, G Hornung, X Garbet… - Nuclear …, 2017 - iopscience.iop.org
We show that a class of near-marginal and low-collisional magnetised plasmas naturally
evolve into a globally organised state dubbed the'$\mathbf {E}\times\mathbf {B} $ staircase' …

Impact of avalanche type of transport on internal transport barrier formation in tokamak plasmas

F Kin, K Itoh, T Bando, K Shinohara, N Oyama… - Scientific Reports, 2023 - nature.com
In magnetic fusion plasmas, a transport barrier is essential to improve the plasma
confinement. The key physics behind the formation of a transport barrier is the suppression …

On how fast ions enhance the regulation of drift wave turbulence by zonal flows

GJ Choi, PH Diamond, TS Hahm - Nuclear Fusion, 2023 - iopscience.iop.org
This paper presents a mechanism for enhanced regulation of drift wave turbulence by zonal
flows in the presence of a fast ion population. It demonstrates that dilution effects due to the …

A unified theory of zonal flow shears and density corrugations in drift wave turbulence

R Singh, PH Diamond - Plasma Physics and Controlled Fusion, 2021 - iopscience.iop.org
A unified theory of zonal flow shears and density corrugations in drift wave turbulence is
presented. Polarization and density advection beat excitation are studied in combination …

Role of zonal flow staircase in electron heat avalanches in KSTAR L-mode plasmas

L Qi, MJ Choi, JM Kwon, TS Hahm - Nuclear Fusion, 2020 - iopscience.iop.org
The first principle nonlinear gyrokinetic numerical simulation successfully reproduces the
experimental observations of non-diffusive large scale avalanching events in a KSTAR MHD …

Global E× B flow pattern formation and saturation

L Qi, MJ Choi, M Leconte, TS Hahm, JM Kwon - Nuclear Fusion, 2022 - iopscience.iop.org
Abstract The E× B flow staircase-like pattern observed in the first principle gyrokinetic
numerical experiments of tokamak fusion plasmas forms due to a nonlinear time delay …

Experimental evaluation of avalanche type of electron heat transport in magnetic confinement plasmas

F Kin, K Itoh, T Bando, K Shinohara, N Oyama… - Nuclear …, 2022 - iopscience.iop.org
Turbulent transport is undoubtedly important in magnetic confinement plasmas. It has been
reported that a lot of transport dynamics are not satisfying the local diffusive models. Here …

Formation of a high pressure staircase pedestal with suppressed edge localized modes in the DIII-D tokamak

A Ashourvan, R Nazikian, E Belli, J Candy, D Eldon… - Physical Review Letters, 2019 - APS
We observe the formation of a high-pressure staircase pedestal (≈ 16–20 kPa) in the DIII-D
tokamak when large amplitude edge localized modes are suppressed using resonant …

[HTML][HTML] Dynamics of zonal shear collapse with hydrodynamic electrons

RJ Hajjar, PH Diamond, MA Malkov - Physics of Plasmas, 2018 - pubs.aip.org
This paper presents a theory for the collapse of the edge zonal shear layer, as observed at
the density limit at low β. This paper investigates the scaling of the transport and mean …