ExB Plasmas Workshop 2022

The International ExB Plasmas Workshop brings together researchers and experts from the plasma physics community to discuss the latest developments in plasma physics, plasma turbulence, and plasma anomalous transport. This edition of the workshop took place online in February 16-18, 2022.

The organizers of this edition of the workshop were the
Equipo de Propulsión Espacial y Plasmas (EP2) research team at Universidad Carlos III de Madrid.

Dates and venue

The workshop is now over. It took place online in February 16-18, 2022. Workshop materials will remain accessible through this website and can be found in the sections below.

Young researchers "poster" mini-session

To give the chance to younger researchers to present their work and network with others, a special session was held on February 17, 15:00 to 16:00, Madrid time.

Computational benchmark

We are glad to announce that a new benchmark effort is being organized, led by Laurent Garrigues (LAPLACE) and Tasman Powis (PPPL). All groups will be invited to participate in the benchmark. More information will be posted here when available.


This workshop has been organized with the support of project ERC-ZARATHUSTRA, under the European Union's Horizon 2020 research and innovation programme (grant agreement No 950466), and with the support of project PROMETEO, funded by the Comunidad de Madrid, under Grant reference Y2018/NMT-4750 PROMETEO-CM.

Topical sessions

Below you can find the session program and all relevant materials. You are invited to ask any questions/comments through the discussion forum.

Workshop opening and welcome

February 16, 2022, 15:30 - 16:00 Madrid time.

Session 1: High-frequency, small scale oscillations and turbulence

February 16, 2022, 16:00 - 17:45 Madrid time. [Slides]

Chaired by Sedina Tsikata and Benjamin Jorns.

  • A. Smolyakov, Nonlinear regimes of the electron cyclotron drift instability in Vlasov simulations
  • L. Wang, Electron cyclotron drift instability and anomalous transport: two-fluid moment theory and modeling
  • Y. Mikellides, Growth of the modified two-stream and lower hybrid drift instabilities in the near-pole plume of a magnetically Shielded Hall thruster
  • E. Bello-Benitez, Axial-azimuthal, high-frequency modes from global linear-stability model of a Hall thruster
  • K. Hara, Cross-field electron diffusion due to the coupling of drift-driven microinstabilities

Session 2: Low-frequency oscillations and structures

February 16, 2022, 18:15 - 20:00 Madrid time. [Slides]

Chaired by Yevgeny Raitses and Igor Kaganovich.

  • J.P. Boeuf, Rotating spokes in ExB plasma of planar magnetron
  • L. Xu, On the driving mechanism behind the formation of a rotating spoke
  • M. Panjan, Spokes in RF and DC magnetron discharges
  • I. Romadanov, Control of Coherent Structures via External Drive of the Breathing Mode
  • D. Smith, Constricted orbiting mode in high current, magnetized rare-gas plasma
  • Discussions:
    • J. Bak, Need and feasibility of controlling plasma structures
    • J. Szabo, Methods of prototyping new thrusters and whole device modeling, rationale for 3-D modeling
    • I. Kaganovich, Y. Raitses, Year since the last workshop and next perspectives

Young researchers "poster" mini-session

February 17, 2022, 15:00 - 16:00 Madrid time.

Please refer to the list in the posters section for the Zoom link of each poster.

Session 3: High performance simulation of plasma transport and validation

February 17, 2022, 16:00 - 17:45 Madrid time. [Slides]

Chaired by Laurent Garrigues and Francesco Taccogna.

The session includes the discussion of the validation of PIC simulations and benchmarks.

  • D. Eremin, GPU-based simulation
  • P. Minelli, Hybrid MPI-OpenMP simulation
  • L. Garrigues, Sparse PIC approach
  • A. Knoll, Dimensional reduction method
  • T. Powis, PIC Penning Discharge Benchmark

Session 4: Theory, Reduced Modeling and EP needs

February 17, 2022, 18:15 - 20:00 Madrid time. [Slides]

Chaired by Anne Bourdon and Andrei Smolyakov

  • A. Bourdon, Physics learned from axial-azimuthal and radial-azimuthal PIC benchmarks
  • A. Smolyakov, Mechanisms of the breathing mode: fluid, hybrid, and reduced models; fluid-hybrid benchmark (LANDMARK)
  • E. Ahedo, On magnetized electron fluid models for thruster discharges
  • T. Lafleur, The origin of the breathing mode in Hall thrusters and its stabilization
  • B. Jorns, Experimental characterization of Hall thruster breathing mode dynamics
  • T. Andreussi, Numerical and Experimental Investigation of Longitudinal Oscillations in Hall Thrusters

Session 5: Plasma-wall interaction

February 18, 2022, 16:00 - 17:45 Madrid time. [Slides]

Chaired by Michael Keidar and Eduardo Ahedo

  • D. Eremin, SEE modeling
  • F. Cichocki, Interaction of heavy species with walls
  • Y. Raitses, Active boundaries for ExB plasmas
  • A. Marín, Kinetic modeling of electron-wall interaction
  • M. Keidar, Periodic structures in a magnetic field
  • J. Polk, Pole erosion characterization
  • Y. Mikellides, Erosion and ion heating in MS-HETs
  • J. Perales, Plasma-wall simulations in MS-HETs
  • T. Andreussi, MS-HET scaling laws; Kr vs Xe
  • F. Taccogna, Molecular propellant
  • D. Rafalskyi, Iodine propellant

Session 6: Magnetic nozzles and plasma plumes

February 18, 2022, 18:15 - 19:45 Madrid time. [Slides] [References]

Chaired by Justin Little and Mario Merino.

  • J. Zhou, Trapped electrons, cooling, anisotropy, heat fluxes
  • A. Vinci, Experimental results on electron cooling
  • J. Young Kim, Experimental measurement of trapped electrons
  • A. Smolyakov, Ion kinetic effects and instabilities in the MN
  • B. Jorns, Facility effects
  • B. Jorns, Oscillations and instabilities in the MN
  • K. Takahashi, Advances in performance of associated EP thrusters
  • K. Takahashi, Stretch of the magnetic nozzle
  • J. Little, Electron detachment
  • F. Cichocki, 3D plume modeling in the geomagnetic field
  • M. Merino, Numerical boundary conditions for fluid/hybrid/kinetic codes
  • M. Merino, Advanced magnetic configurations

Workshop closure and wrap-up

February 18, 2022, 19:45 - 20:00 Madrid time.


Poster slides can be found below. You are welcome to say hello and discuss the posters in the discussion forum.

  1. Davide Maddaloni, Data-driven analysis of breathing and ion-transit modes in 2D hybrid Hall thruster simulations, [PDF]
  2. Alberto Modesti, Comparison between 3D Magnetized Plasma Plume Solutions obtained with full FD and hybrid FV-FD schemes, [PDF]
  3. Baptiste Trotabas, Controlling perpendicular electric fields with biased electrodes, [PDF]
  4. Enrique Bello, Axial equilibrium model of the Hall discharge and its far plume with electron inertia and other effects, [PDF]
  5. Tarek Ben Slimane, Analysis of small scale fluctuations in Hall effect thrusters using virtual Thomson scattering on PIC simulations, [PDF]
  6. Alberto Marín-Cebrián, Oblique magnetic field effect on radial plasma dynamics, [PDF]
  7. Jesús Perales, Hybrid plasma simulations of the HT5k thruster, [PDF]
  8. Junhwi Bak, Significance of physical properties in azimuth dimension in Hall thruster ExB Plasma: toward active control of plasma by artificial azimuthal modulation, [PDF]
  9. Pedro Jiménez-Jiménez, Wave propagation and absorption in a Helicon plasma thruster source, plume and surroundings, [PDF]
  10. Federico Petronio, Two-Points Power Spectral Density analysis of instabilities in PIC simulations, [PDF]
  11. Thomas Marks, Calibrating models of anomalous transport using bi-fidelity surrogates, [PDF]
  12. Romain Pioch, LIF diagnostic in the magnetic nozzle of an ECR thruster, [PDF]
  13. Liang Xu, Uncovering the driving mechanism of rotating spokes in partially magnetized plasmas, [PDF]
  14. Willca Villafana, 3D Particle-In-Cell study of the Electron Drift Instability in a ExB discharge, [PDF]
  15. Denis Zolotukhin, A milli-Newton-level two-stage µCAT-MPD thruster, [PDF]
  16. Thibault Dubois, Electron cyclotron drift instability: influence of electron properties in CTS measurement, [PDF]
  17. Assan Abdirakhmanov, Dust particle in DC glow discharge in ExB field, [PDF]
  18. Stefano Boccelli, 14-moment maximum-entropy VDF: application to electrons in ExB fields, [PDF]
  19. Guillaume Bogopolsky, A fluid formalism for low-temperature plasma flows dedicated to space propulsion in an unstructured high performance computing solver, [PDF]


The Workshop discussion forum will remain active and accept new threads and replies:

The discussion is structured around the different workshop sessions, and all contributions are welcome. You can also use this platform to ask general questions, showcase your recent publications related to the workshop topics, and make other relevant announcements (e.g. open positions). Please note that the forum has public read access; to participate in the discussion, you will need a free GitHub account. To receive updates if someone answers on your posts you must activate notifications ("Watch repository" and set up notification options in your GitHub account).


Equipo de Propulsión Espacial y Plasmas
Universidad Carlos III de Madrid
Avda. de la Universidad 30
28911 Leganés (Madrid) Spain
Office: 7.1.H.14. View map
+34 91 624 8237
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