Results 111 to 120 of about 1,247 (174)

Assessing the impact of alpha particles on thermal confinement in JET D-T plasmas through global GENE-Tango simulations

Nuclear Fusion
The capability of the global, electromagnetic gyrokinetic GENE code interfaced with the transport Tango solver is exploited to address the impact of fusion alpha particles (in their dual role of fast particles and heating source) on plasma profiles and ...
A. Di Siena, J. Garcia, R. Bilato, K. Kirov, J. Varela, A. Bañón Navarro, Hyun-Tae Kim, C. Challis, J. Hobirk, A. Kappatou, E. Lerche, D. Spong, C. Angioni, T. Görler, E. Poli, M. Bergmann, F. Jenko, JET contributors   +17 more
doaj   +1 more source

Simulations of edge and SOL turbulence in diverted negative and positive triangularity plasmas

Nuclear Fusion
Optimizing the performance of magnetic confinement fusion devices is critical to achieving an attractive fusion reactor design. Negative triangularity (NT) scenarios have been shown to achieve excellent levels of energy confinement, while avoiding edge ...
P. Ulbl, A. Stegmeir, D. Told, G. Merlo, K. Zhang, F. Jenko   +5 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

Effect of modulated heat source on diffusive and avalanche-like transport

Nuclear Fusion
We utilize the global full-F gyrokinetic code GYSELA to analyze the nonlocal transport in the presence of modulated heat source, the period of which is in the range of a transport timescale. In submarginal stable case, it is observed that a localized and
Y.W. Cho, X. Garbet, R. Varennes, Z.S. Qu, P. Donnel, K. Obrejan, V. Grandgirard   +6 more
doaj   +1 more source

Turbulent Heating in Collisionless Low-beta Plasmas: Imbalance, Landau Damping, and Electron–Ion Energy Partition

The Astrophysical Journal
An understanding of how turbulent energy is partitioned between ions and electrons in weakly collisional plasmas is crucial for modeling many astrophysical systems. Using theory and simulations of a four-dimensional reduced model of low-beta gyrokinetics
Toby Adkins, Romain Meyrand, Jonathan Squire   +2 more
doaj   +1 more source

Negotiating consent: exploring ethical issues when therapeutic massage bodywork practitioners are trained in multiple therapies. [PDF]

Int J Ther Massage Bodywork, 2014
Porcino AJ, Page SA, Boon HS, Verhoef MJ.   +3 more
europepmc   +1 more source

A prospectus on kinetic heliophysics. [PDF]

Phys Plasmas, 2017
Howes GG.
europepmc   +1 more source

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