Collisional resonance function in discrete-resonance quasilinear plasma systems

VN Duarte, NN Gorelenkov, RB White, HL Berk - Physics of Plasmas, 2019 - pubs.aip.org
A method is developed to analytically determine the resonance broadening function in
quasilinear theory from first principles, due to either Krook or Fokker-Planck scattering …

[HTML][HTML] Verification and application of resonance broadened quasi-linear (RBQ) model with multiple Alfvénic instabilities

NN Gorelenkov, VN Duarte, CS Collins, M Podestà… - Physics of …, 2019 - pubs.aip.org
The resonance broadened quasilinear (RBQ) model for the problem of relaxing the hot ion
distribution function in constant-of-motion 3D space [Gorelenkov et al., Nucl. Fusion 58 …

Drift kinetic theory of alpha transport by tokamak perturbations

EA Tolman, PJ Catto - Journal of Plasma Physics, 2021 - cambridge.org
Upcoming tokamak experiments fuelled with deuterium and tritium are expected to have
large alpha particle populations. Such experiments motivate new attention to the theory of …

Energetic particles transport in constants of motion space due to collisions in tokamak plasmas

G Meng, P Lauber, Z Lu, A Bergmann… - Nuclear fusion, 2024 - iopscience.iop.org
The spatio-temporal evolution of the energetic particles in the transport time scale in
tokamak plasmas is a key issue of the plasmas confinement, especially in burning plasmas …

Quasilinear drift kinetic theory of alpha particle transport by neoclassical tearing modes

EA Tolman, PJ Catto - Journal of Plasma Physics, 2025 - cambridge.org
Kinetic theory of particles near resonances is a current topic of discussion in plasma physics
and astrophysics. We extend this discussion to the kinetic theory of the interaction between …

Effects of the non-perturbative mode structure on energetic particle transport

G Meng, P Lauber, Z Lu, X Wang - Nuclear Fusion, 2020 - iopscience.iop.org
Energetic particles (EPs) are known to change the properties of shear Alfvén waves in
tokamaks, and for this reason non-perturbative models have to be used to describe their …

Shifting and splitting of resonance lines due to dynamical friction in plasmas

VN Duarte, JB Lestz, NN Gorelenkov, RB White - Physical Review Letters, 2023 - APS
A quasilinear plasma transport theory that incorporates Fokker-Planck dynamical friction
(drag) and pitch angle scattering is self-consistently derived from first principles for an …

Collisional broadening of nonlinear resonant wave–particle interactions

PJ Catto, EA Tolman - Journal of Plasma Physics, 2021 - cambridge.org
A general procedure for understanding plasma behaviour when resonant wave–particle
interactions are the sole destabilizing and transport mechanism or only heating and/or …

Mode structure symmetry breaking of reversed shear Alfvén eigenmodes and its impact on the generation of parallel velocity asymmetries in energetic particle …

M Guo, P Lauber, W Xin, LU Zhixin - Plasma Science and …, 2022 - iopscience.iop.org
In this work, the gyrokinetic eigenvalue code LIGKA, the drift-kinetic/MHD hybrid code
HMGC and the gyrokinetic full-f code TRIMEG-GKX are employed to study the mode …

A simple model for perturbative kinetic particle resonances in tokamaks

RB White, VN Duarte - Physics of Plasmas, 2019 - pubs.aip.org
Resonances driven by particle distribution gradients are studied in a simple statistical model
which does not involve advancing individual particles due to the interaction with the mode …