Title :
A possible mechanism of runaway electrons generation in pulsed plasmas
Author :
Zabaidullin, O. ; Dubau, J.
Author_Institution :
Inst. of Nucl. Fusion, Kurchatov (I.V.) Inst. of Atomic Energy, Moscow, Russia
fDate :
6/20/1905 12:00:00 AM
Abstract :
The nonlinear dynamics of magnetic field penetration into an inhomogeneous density plasma as a KMC wave is accompanied by a significant Joule heat release in the current layer and the generation of runaway electrons. In the frame of electron magnetohydrodynamic (EMHD) theory a particle in cell (PIC) modeling is carried out to study the process of self-consistent electron acceleration in the wave electromagnetic field. It is shown that the electron acceleration becomes possible due to a nonzero circulation of the Hall electric field component along the “cyclotron circles” of the electron trajectory
Keywords :
Z pinch; plasma magnetohydrodynamics; plasma transport processes; Hall electric field component; Joule heat release; KMC wave; current layer; cyclotron circles; electron acceleration; electron magnetohydrodynamic theory; electron trajectory; inhomogeneous density plasma; magnetic field penetration; nonlinear dynamics; nonzero circulation; particle in cell modeling; pulsed plasmas; runaway electrons generation; self-consistent electron acceleration; wave electromagnetic field; Acceleration; Electromagnetic modeling; Electrons; Magnetic fields; Magnetohydrodynamic power generation; Nonuniform electric fields; Plasma accelerators; Plasma density; Plasma waves; Pulse generation;
Conference_Titel :
High-Power Particle Beams, 1998. BEAMS '98. Proceedings of the 12th International Conference on
Conference_Location :
Haifa
Print_ISBN :
0-7803-4287-9
DOI :
10.1109/BEAMS.1998.822503
