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- W2407069697 abstract "Numerous evidences exist today that the classical conductivity cannot explain the behavior of Hall Thrusters. Numerical models have also shown that wall collisions are insufficient to provide enough conductivity. On the other hand, with the help of an implicit particle code, we have shown that the parameter range of interest, the plasma inside the thruster is turbulent and that this turbulence is sufficient to reproduce its behavior. In this paper, we present a linear study of the electron drift instability that we have identified in the implicit model. We solve numerically the dispersion relation for various parameters. One of the conclusions is that the wave vector of the instability is essentially perpendicular to the magnetic field. We will pay attention to the drift modes. We have developed an explicit 2D PIC code to study the nonlilear behavior of the preceding instability. This model confirms the linear growth rate computed theoretically and also shows without ambiguity that the developement of electrostatic perturbations is associated with the flow of current even in the presence of a single mode. In single mode case, we have built a simple theoretical model similar to the one used for heating of Tokamaks by electromagnetic waves. This model shows that at sufficiently large amplitude of the electrosatic field, stochasticity is induced in the gyromotion of the electrons." @default.
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- W2407069697 date "2005-01-01" @default.
- W2407069697 modified "2023-09-27" @default.
- W2407069697 title "Theoretical analysis of anomalous conductivity in Hall Eect Thrusters" @default.
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- W2407069697 hasPublicationYear "2005" @default.
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