Results 21 to 30 of about 1,119 (163)

Numerical modeling of linear and nonlinear evolution of tearing modes and resistive-kink modes with runaway electrons

open access: yesNuclear Fusion
In this work, we extend the three-dimensional, nonlinear resistive/two-fluid MHD code CLT to simulate runaway electron physics by implementing a widely adopted fluid runaway electron MHD (RE-MHD) model.
Y. Zhang, W. Zhang, Y.Y. Ying, Z.W. Ma
doaj   +1 more source

Theoretical simulation of high-voltage discharge with runaway electrons in sulfur hexafluoride at atmospheric pressure

open access: yesMatter and Radiation at Extremes, 2016
The results of theoretical simulation of runaway electron generation in high-pressure pulsed gas discharge with inhomogeneous electric field are presented.
Andrey V. Kozyrev   +2 more
doaj   +1 more source

The constraint of plasma power balance on runaway avoidance

open access: yesNuclear Fusion, 2023
In a post-thermal-quench plasma, mitigated or unmitigated, the plasma power balance is mostly between collisional or Ohmic heating and plasma radiative cooling.
Christopher J. McDevitt   +4 more
doaj   +1 more source

Runaway electrons and ITER

open access: yesNuclear Fusion, 2017
The potential for damage, the magnitude of the extrapolation, and the importance of the atypical—incidents that occur once in a thousand shots—make theory and simulation essential for ensuring that relativistic runaway electrons will not prevent ITER from achieving its mission.
openaire   +2 more sources

The impact of fusion-born alpha particles on runaway electron dynamics in ITER disruptions

open access: yesNuclear Fusion, 2023
In the event of a tokamak disruption in a D-T plasma, fusion-born alpha particles take several milliseconds longer to thermalise than the background. As the damping rates drop drastically following the several orders of magnitudes drop of temperature ...
A. Lier   +5 more
doaj   +1 more source

A kinetic model for runaway electrons in the ionosphere [PDF]

open access: yesAnnales Geophysicae, 2006
Electrodynamic models and measurements with satellites and incoherent scatter radars predict large field aligned current densities on one side of the auroral arcs. Different authors and different kinds of studies (experimental or modeling) agree that
G. Garcia, G. Garcia, F. Forme, F. Forme
doaj   +1 more source

Flare energy release and avalanche ionization of plasma by runaway electrons in lower solar atmosphere

open access: yesOpen Astronomy, 2022
The analysis of the electron acceleration by the quasi-stationary sub-Dreiser electric fields in the lower solar atmosphere has been done. It has been shown that the Dreiser electric field turned out to be several orders of magnitude larger than coronal ...
Tsap Yuriy   +2 more
doaj   +1 more source

Kinetics of relativistic runaway electrons [PDF]

open access: yesNuclear Fusion, 2017
This overview covers recent developments in the theory of runaway electrons in tokamaks. Its main purpose is to outline the intuitive basis for first-principle advancements in runaway electron physics. The overview highlights the following physics aspects of the runaway evolution: (1) survival and acceleration of initially hot electrons during thermal ...
Breizman, B., Aleynikov, P.
openaire   +2 more sources

ON PHENOMENON OF ELECTRON’S RUNAWAY IN PARTIALLY IONIZED NON-IDEAL PLASMA

open access: yesВестник. Серия физическая, 2008
The effect of electrons runaway in partially ionized hydrogen plasma is investigated on the basis of the pseudopotential models. The electrons runaway conditions were determined.
K.M. Turekhanova
doaj  

Runaway Electrons in Gas Discharges: Insights from the Numerical Modeling

open access: yesPlasma
This paper reviews the state of the art of our understanding of the mechanisms of runaway electron generation in pressurized gases from the numerical modeling perspective.
Dmitry Levko
doaj   +1 more source

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