electromagnetic effects 1gyrokinetic simulations 1tokamak turbulence 1transport transition 1zonal flows 1
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physics.plasm-ph2026
Zonal-flow generation and saturation of electromagnetic ion-scale turbulence in tokamaks
Y. Zhang, T. Adkins, M. Barnes +5
The paper uses local gyrokinetic simulations to study how electromagnetic ion‑scale turbulence in tokamaks generates zonal flows, finding that a combined parameter β_eff = q²β_e co…
physics.plasm-ph2025
Measurement of zero-frequency fluctuations generated by coupling between Alfven modes in the JET tokamak
Juan Ruiz Ruiz, Jeronimo Garcia, Michael Barnes +13
We report the first experimental detection of a zero-frequency fluctuation that is pumped by an Alfvèn mode in a magnetically confined plasma. Core-localized bidirectional Alfvèn…
physics.plasm-ph2024
shear suppression of microtearing based transport in spherical tokamaks
B. S. Patel, M. R. Hardman, D. Kennedy +3
Electromagnetic microtearing modes (MTMs) have been observed in many different spherical tokamak regimes. Understanding how these and other electromagnetic modes nonlinearly satura…