Characteristics and transport effects of the electron drift instability in Hall-effect thrusters

2017 ◽  
Vol 26 (2) ◽  
pp. 024008 ◽  
Author(s):  
T Lafleur ◽  
S D Baalrud ◽  
P Chabert
2018 ◽  
Vol 25 (6) ◽  
pp. 063522 ◽  
Author(s):  
Vivien Croes ◽  
Antoine Tavant ◽  
Romain Lucken ◽  
Roberto Martorelli ◽  
Trevor Lafleur ◽  
...  

2021 ◽  
Vol 145 ◽  
pp. 110810
Author(s):  
D. Mandal ◽  
Y. Elskens ◽  
X. Leoncini ◽  
N. Lemoine ◽  
F. Doveil

2012 ◽  
Vol 28 (6) ◽  
pp. 1399-1405 ◽  
Author(s):  
Leonid Pekker ◽  
Michael Keidar

Author(s):  
Timofey Chernyshev ◽  
Dariya Krivoruchko

Abstract The cathode plasma is a specific transition region in the Hall Effect Thruster (HET) discharge that localizes between the strongly magnetized acceleration layer (magnetic layer or B-layer) and non-magnetized exhaust plume. Cathode plasma provides a flow of electron current that supplies losses in the magnetic layer (due to ionization, excitation, electron-wall interactions, etc.). The electrons' transport in this region occurs in collisionless mode through the excitation of plasma instabilities. This effect is also known as "anomalous transport/conductivity". In this work, we present the results of a 2d (drift-plane) kinetic simulation of the HET discharge, including the outside region that contains cathode plasma. We discuss the process of cathode plasma formation and the mechanisms of "anomalous transport" inside it. We also analyze how fluid force balance emerges from collisionless kinetic approach. The acceleration mechanism in Hall Effect Thrusters (HETs) is commonly described in terms of force balance. Namely, the reactive force produced by accelerated ions has the same value as Ampère's force acting on a drift current loop. This balance written in integral form provides the basis for quantitative estimations of HETs' parameters and scaling models.


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