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of 178
pro vyhledávání: '"Garbet, Xavier"'
We investigate the motion of charged particles in a turbulent electrostatic potential using guiding-center theory. By increasing the Larmor radius, the dynamics exhibit close-to-ballistic transport properties. The transition from diffusive to ballist
Externí odkaz:
http://arxiv.org/abs/2309.02461
Autor:
Lim, Kyungtak, Garbet, Xavier, Sarazin, Yanick, Gravier, Etienne, Lesur, Maxime, Lo-Cascio, Guillaume, Rouyer, Timothe
The effect of toroidal rotation on both turbulent and neoclassical transport of tungsten (W) in tokamaks is investigated using the flux-driven, global, nonlinear 5D gyrokinetic code GYSELA. Nonlinear simulations are carried out with different levels
Externí odkaz:
http://arxiv.org/abs/2304.12603
Full self-consistent stationary Vlasov-Maxwell solutions of magnetically confined plasmas are built for systems with cylindrical symmetries. The stationary solutions are thermodynamic equilibrium solutions. These are obtained by computing the equilib
Externí odkaz:
http://arxiv.org/abs/2208.09289
Autor:
Dif-Pradalier, Guilhem, Ghendrih, Philippe, Sarazin, Yanick, Camenen, Yann, Donnel, Peter, Garbet, Xavier, Grandgirard, Virginie, Munschy, Yann, Vermare, Laure, Widmer, Fabien
Publikováno v:
COMMUNICATIONS PHYSICS 5:229 (2022)
Turbulent plasmas notably self-organize to higher energy states upon application of additional free energy sources or modification of edge operating conditions. Mechanisms whereby such bifurcations occur have been actively debated for decades. Enhanc
Externí odkaz:
http://arxiv.org/abs/2206.04193
Autor:
Stephens, Cole Darin, Garbet, Xavier, Citrin, Jonathan, Bourdelle, Clarisse, van de Plassche, Karel Lucas, Jenko, Frank
Publikováno v:
Journal of Plasma Physics, Volume 87, Issue 4, August 2021, 905870409
In order to predict and analyze turbulent transport in tokamaks, it is important to model transport that arises from microinstabilities. For this task, quasilinear codes have been developed that seek to calculate particle, angular momentum, and heat
Externí odkaz:
http://arxiv.org/abs/2103.10569
Autor:
Laribi, Elias, Ogawa, Shun, Dif-Pradalier, Guilhem, Vasiliev, Alexei, Garbet, Xavier, Leoncini, Xavier
Publikováno v:
Fluids 2019, 4, 172 (2019)
Starting from the given passive particle equilibrium particle cylindrical profiles, we built self-consistent stationary conditions of the Maxwell-Vlasov equation at thermodynamic equilibrium with non-flat density profiles. The solutions to the obtain
Externí odkaz:
http://arxiv.org/abs/1909.08044
Akademický článek
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Publikováno v:
Physics Letters A 383 (2019) 35-39
The mesoscopic properties of a plasma in a cylindrical magnetic field are investigated from the view point of test-particle dynamics. When the system has enough time and spatial symmetries, a Hamiltonian of a test particle is completely integrable an
Externí odkaz:
http://arxiv.org/abs/1611.00063
Publikováno v:
Physics of Plasmas 23, 122510 (2016)
Charged particles with low kinetic energy move along magnetic field lines, but so do not energetic particles. We investigate the topological structure changes in the phase space of energetic particles with respect to the magnetic one. For this study
Externí odkaz:
http://arxiv.org/abs/1610.02867
Autor:
Ogawa, Shun, Cambon, Benjamin, Leoncini, Xavier, Vittot, Michel, del Castillo-Negrete, Diego, Dif-Pradalier, Guilhem, Garbet, Xavier
Publikováno v:
Phys. Plasmas 23, 072506 (2016)
We present a numerical study of charged particle motion in a time-independent magnetic field in cylindrical geometry. The magnetic field model consists of an unperturbed reversed-shear helical part and a perturbation consisting of a superposition of
Externí odkaz:
http://arxiv.org/abs/1604.05112