Simulation of plasma confinement in an electron cyclotron resonance zero-B trap
DOI:
https://doi.org/10.15332/iteckne.v12i2.1237Keywords:
magnetic trap, electron cyclotron resonance, particle-in-cell simulation.Abstract
Currently the study of the nonlinear plasma evolution in magnetostatic fields of complex asymmetrical configurations is possible only through computer simulations. The confinement efficiency of plasma by a magnetic zero-B trap which is comprised of longitudinal mirror and transversal hexapole cusp fields is determined through a particle-in-cell method in the electrostatic approximation. In the simulation model the plasma heating by 14 GHz microwave power is realized at electron cyclotron resonance conditions. The space localizations of electron and ion components are visualized. It is found that the plasma electron population can be subdivides into cold, hot and superhot groups. The obtained data for the ion density distribution along radial and longitudinal trap directions are compared with the same distributions calculated for the case of minimum-B trap. It is found that the zero-B trap has some advantage over the minimum-B trap in reference to the Lawson criterion.
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