Results 261 to 270 of about 266,197 (292)
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Density edge localized modes in rotating plasmas
Nuclear Fusion, 1996A linear analysis is presented for the density edge localized mode with realistic tokamak edge plasma and electric field profiles. The mode is driven unstable by the electron temperature gradient and is localized by the density pedestal, with a radial mode width proportional to the square root of the density scale length (in H mode).
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Magnetic X-points, edge localized modes, and stochasticity
Physics of Plasmas, 2010Edge localized modes (ELMs) near the boundary of a high temperature, magnetically confined toroidal plasma represent a new type of nonlinear magnetohydrodynamic (MHD) plasma instability that grows through a coherent plasma interaction with part of a chaotic magnetic field.
L. E. Sugiyama, H. R. Strauss
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Effect of resistivity on small edge localized mode
Physics of Plasmas, 2018The effect of resistivity on small edge localized mode (ELM) is investigated based on the peeling-ballooning three-field module of BOUT++. The ELM size increases with increasing resistivity, which is attributed to both linear growth rate and turbulence intensity.
N. Wu, S. Y. Chen, M. L. Mou, C. J. Tang
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Edge localized modes control by resonant magnetic perturbations
Journal of Nuclear Materials, 2007A number of designs for external or in-vessel coils generating Resonant Magnetic Perturbations (RMPs) for type I ELMs control in ITER are analyzed. The RMPs generated by the I-coils in the successful DIII-D ELMs control experiments are taken as a reference. The three ITER characteristic scenarios (H-mode, hybrid and steady-state) are studied.
E. Nardon +13 more
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The physics of large and small edge localized modes
Plasma Physics and Controlled Fusion, 2000The operational boundaries for the occurrence of various types of edge localized mode (ELM) instability in high-confinement-mode (H-mode) fusion plasmas are reviewed. The phenomenology of ELMs and the occurrence of different ELM types in parameter space are described.
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Edge localized modes control by stochastic magnetic fields
Nuclear Fusion, 2005This paper describes a new approach for modelling the pedestal energy transport in the presence of a small radial magnetic perturbation. The cases of a ballooning instability leading to Type I edge localized modes (ELMs) and a magnetic perturbation generated by external coils are treated.
M Bécoulet +11 more
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A linear analysis for edge-localized mode precursors
Plasma Physics and Controlled Fusion, 1996This paper presents a linear analysis on an instability that is driven by the electron temperature gradient and is localized by the density pedestal at the edge. We find that the instability appears only in H-mode plasmas and can survive the observed levels of sheared plasma rotation because of its narrow radial width.
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Effects of hyper-resistivity on edge localized modes
Plasma Physics and Controlled FusionAbstract The effects of hyper-resistivity induced by anomalous electron viscosity on edge localized modes (ELMs) are systematically investigated using the ELM-PB model in BOUT++ simulation code. Our previous theoretical work [S Y Chen et al, Plasma Phys. Control.
T Q Liu +6 more
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Quasicontinuous Exhaust Scenario for a Fusion Reactor: The Renaissance of Small Edge Localized Modes
Physical Review Letters, 2022Georg Friedrich Harrer +2 more
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