A5102824906- Magnetic confinement fusion research
- Ionosphere and magnetosphere dynamics
- Laser-Plasma Interactions and Diagnostics
- Meteorological Phenomena and Simulations
- Solar and Space Plasma Dynamics
- Photocathodes and Microchannel Plates
- Geomagnetism and Paleomagnetism Studies
- Fluid Dynamics and Turbulent Flows
- Atomic and Molecular Physics
- Advanced Chemical Physics Studies
- Computational Fluid Dynamics and Aerodynamics
Max Planck Institute for Plasma Physics
2024
Czech Academy of Sciences, Institute of Plasma Physics
2024
Johannes Kepler University of Linz
1997
Abstract Small magnetic fluctuations ( <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:msub> <mml:mi>B</mml:mi> <mml:mn>1</mml:mn> </mml:msub> <mml:mrow> <mml:mo>/</mml:mo> </mml:mrow> <mml:mn>0</mml:mn> <mml:mo>∼</mml:mo> <mml:msup> <mml:mn>10</mml:mn> <mml:mo>−</mml:mo> <mml:mn>4</mml:mn> </mml:msup> </mml:math> ) are intrinsically present in a confinement plasma due to turbulent currents. While the perpendicular transport of particles and heat is typically...
The electronic stopping cross section $\ensuremath{\varepsilon}$ of slow hydrogen projectiles in large-band-gap insulators has been measured at energies a few keV. Even velocities as low ${v}_{0}/3$ $({v}_{0}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}c/137)$, we find no influence the band gap on velocity dependence $\ensuremath{\varepsilon}$, contrary to case gaseous targets with similar minimum excitation energy. magnitude and its essentially linear allow us arrive following...
Abstract The design of commercially feasible magnetic confinement fusion reactors strongly relies on the reduced turbulent transport in plasma edge during operation high mode (H-mode). We present first global turbulence simulations ASDEX Upgrade tokamak and scrape-off layer ITER baseline H-mode conditions. Reasonable agreement with experiment is obtained for outboard mid-plane measurements density, electron ion temperature, as well radial electric field. heat underpredicted by roughly 1/3....
The design of commercially feasible magnetic confinement fusion reactors strongly relies on the reduced turbulent transport in plasma edge during operation high mode (H-mode). We present first global turbulence simulations ASDEX Upgrade tokamak and scrape-off layer (SOL) ITER baseline H-mode conditions. Reasonable agreement with experiment is obtained for outboard mid-plane measurements density, electron ion temperature, as well radial electric field. heat underpredicted by roughly a factor...
Plasma turbulence in the edge of magnetic confinement devices is customarily treated as full-$f$ due to large fluctuations. For computational efficiency, field-aligned coordinates are employed, separating field into equilibrium $B_0$ and delta-f perturbations which handled by flutter operators. Evolving pressure with delta-$f$ can cause inconsistency since latter contain background components such Shafranov shift, actually parts field. Such ($B_s$) contained undermine numerics when flutter:...
Small magnetic fluctuations ($B_1/B_0 \sim 10^{-4}$) are intrinsically present in a confinement plasma due to turbulent currents. While the perpendicular transport of particles and heat is typically dominated by electric field, parallel stream affected fluttering field lines. In particular through electrons, this indirectly impacts turbulence dynamics. Even low beta conditions, we find that $E\times B$ can be reduced more than factor 2 when flutter included our validated edge simulations...