2D Particle-In-Cell simulations of the electron-cyclotron instability and associated anomalous transport in Hall-Effect Thrusters. - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2016

2D Particle-In-Cell simulations of the electron-cyclotron instability and associated anomalous transport in Hall-Effect Thrusters.

Trevor Lafleur
Z. Bonaventura
  • Fonction : Auteur
François Pechereau
  • Fonction : Auteur
  • PersonId : 771325
  • IdRef : 177318309
Anne Bourdon
Pascal Chabert

Résumé

This work studies the electron-cyclotron instability in Hall-Effect Thrusters (HETs) using a 2D Particle-In-Cell (PIC) simulation. The simulation is configured with a Cartesian coordinate system where a magnetic field, B0, is aligned along the X-axis (radial direction, including absorbing walls), a constant electric field, E0, along the Z-axis (axial direction, perpendicular to simulation plane), and the E0xB0 direction along the Y-axis (O direction, with periodic boundaries). Although for low plasma densities classical electron-neutral collisions theory describes well electron transport, at sufficiently high densities (as measured in HETs) a strong instability can be observed that enhances the electron mobility, even in the absence of collisions. The instability generates high frequency (~ MHz) and short wavelength (~ mm) fluctuations in both the electric field and charged particle densities. We investigate the correlation between these fluctuations and their role with anomalous electron transport; complementing previous 1D simulations. Plasma is self-consistently heated by the instability, but since the latter does not reach saturation in an infinitely long 2D system, saturation is achieved through implementation of a finite axial length that models convection in E0 direction.
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Dates et versions

hal-02593697 , version 1 (15-05-2020)

Identifiants

  • HAL Id : hal-02593697 , version 1

Citer

Vivien Croes, Trevor Lafleur, Z. Bonaventura, François Pechereau, Anne Bourdon, et al.. 2D Particle-In-Cell simulations of the electron-cyclotron instability and associated anomalous transport in Hall-Effect Thrusters.. 69th Annual Gaseous Electronics Conference, Oct 2016, Ruhr-Universität Bochum, Germany. ⟨hal-02593697⟩
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