Nonlinear equilibria and transport processes in burning plasmas

Abstract In this work, we put forward a general phase space transport theory in axisymmetric tokamak plasmas based upon the concept of zonal state (ZS). Within this theoretical framework, the ZS corresponds to a renormalized plasma nonlinear equilibrium consisting of phase space zonal structures (PS...

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Bibliographic Details
Published inNew journal of physics Vol. 25; no. 12; pp. 123035 - 123055
Main Authors Falessi, Matteo Valerio, Chen, Liu, Qiu, Zhiyong, Zonca, Fulvio
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.12.2023
Subjects
Broken symmetry
burning plasmas
Distribution functions
Electromagnetic fields
Electromagnetism
Energetic particles
Equilibrium
Evolution
kinetic theory
nonlinear physics
Physics
Plasma
Plasma equilibrium
plasma physics
plasma transport processes
Plasmas (physics)
Simulation
Transport theory
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Summary:Abstract In this work, we put forward a general phase space transport theory in axisymmetric tokamak plasmas based upon the concept of zonal state (ZS). Within this theoretical framework, the ZS corresponds to a renormalized plasma nonlinear equilibrium consisting of phase space zonal structures (PSZS) and zonal electromagnetic fields (ZFs) which evolve self-consistently with symmetry breaking fluctuations and sources/collisions. More specifically, our approach involves deriving governing equations for the evolution of particle distribution functions (i.e, PSZS), which can be used to compute the corresponding macro-/meso-scale evolving magnetized plasma equilibrium adopting the Chew Goldberger Low description, separating the spatiotemporal microscale structures. The nonlinear physics of ZFs and of geodesic acoustic modes (GAMs)/energetic particle driven GAMs is then analyzed to illustrate the applications of our theory.
Bibliography:NJP-116522.R1
ISSN:1367-2630
1367-2630
DOI:10.1088/1367-2630/ad127d