3 papers
physics.plasm-ph2025
Theory of zonal flow growth and propagation in toroidal geometry
Richard Nies, Felix Parra
The toroidal geometry of tokamaks and stellarators is known to play a crucial role in the linear physics of zonal flows, leading to e.g. the Rosenbluth-Hinton residual and geodesic…
physics.plasm-ph2024
Designing a Validation Experiment for Radio Frequency Condensation
Lanke Fu, E. Litvinova Mitra, R. Nies +18
Theoretical studies have suggested that nonlinear effects can lead to "radio frequency condensation", which coalesces RF power deposition and driven current near the center of a ma…
physics.plasm-ph2024
Saturation of magnetised plasma turbulence by propagating zonal flows
Richard Nies, Felix Parra, Michael Barnes +2
Strongly driven ion-scale turbulence in tokamak plasmas is shown to be regulated by a new propagating zonal flow mode, the toroidal secondary mode, which is nonlinearly supported b…