Results 101 to 110 of about 154 (149)

Effect of reversed magnetic shear on short wavelength ion temperature gradient modes in ADITYA-U tokamak

Nuclear Fusion
Ion temperature gradient (ITG) modes in the short wavelength regime ( $k_\theta \rho_i \gt 1.0$ ) known as the short wavelength ion temperature gradient (SWITG) modes, are investigated linearly and nonlinearly in the electrostatic limit for ADITYA-U ...
Gopal Krishna M., Sagar Choudhary, J. Chowdhury, Amit K. Singh, T. Hayward-Schneider, E. Lanti, R. Ganesh, L. Villard   +7 more
doaj   +1 more source

A kinetic line-driven radiation operator and its application to Gyrokinetics

Nuclear Fusion
A velocity dependent, kinetic model for line radiation is developed for continuum kinetic codes. It has been implemented in the full- f gyrokinetic code Gkeyll.
Jonathan Roeltgen, James Juno, Mike Kotschenreuther, Tess Bernard, Akash Shukla, Manaure Francisquez, Ammar Hakim, Gregory Hammett, Dominic Power, David Hatch   +9 more
doaj   +1 more source

Visualization techniques for the gyrokinetic tokamak simulation code

Frontiers in Physics
Gyrokinetic simulations of plasma microturbulence in tokamaks are challenging to visualize because the compute grid follows the magnetic field lines that spiral around the torus.
Eliot Feibush, Stephane Ethier, Jason Yan, Alexander Yao   +3 more
doaj   +1 more source

Galactokinetics

The Astrophysical Journal
Galactic disks lie at the heart of many astrophysical puzzles. There are sophisticated kinetic theories that describe some aspects of galaxy disk dynamics, but extracting quantitative predictions from those theories has proven very difficult, meaning ...
Chris Hamilton, Shaunak Modak, Scott Tremaine   +2 more
doaj   +1 more source

Gyrokinetic Field Theory as a Gauge Transform or: gyrokinetic theory without Lie transforms

, 2017
Version 2 with 34 pages (was 33), no figures. Derivation changed to start from a canonical Lagrangian, using can. momenta from the start as coordinates.
openaire   +2 more sources

Gyrokinetic limitations and improvements

, 2016
For a tokamak, we consider gyrokinetic quasineutrality limitations when evaluating the axisymmetric radial electric field; a gyrokinetic entropy production restriction on the ion temperature pedestal; and a hybrid gyrokinetic-fluid treatment valid on transport time scales.
Catto, P, Parra, F, Kagan, G, Simakov, A
openaire   +1 more source

Multi-fidelity information fusion for turbulent transport modeling in magnetic fusion plasma. [PDF]

Sci Rep
Maeyama S, Honda M, Narita E, Toda S.
europepmc   +1 more source

Gyrokinetic field theory

Gyrokinetic field theory
The Lagrangian formulation of the gyrokinetic theory is generalized in order to describe the particles' dynamics, as well as the self-consistent behavior of the electromagnetic fields. The gyrokinetic equation for the particle distribution function and the gyrokinetic Maxwell's equations, for the electromagnetic fields, are both derived from the ...
openaire  

Inertial range of magnetorotational turbulence. [PDF]

Sci Adv
Kawazura Y, Kimura SS.
europepmc   +1 more source

Avoiding fusion plasma tearing instability with deep reinforcement learning. [PDF]

Nature
Seo J, Kim S, Jalalvand A, Conlin R, Rothstein A, Abbate J, Erickson K, Wai J, Shousha R, Kolemen E.   +9 more
europepmc   +1 more source