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@article{1376064,
author = {Croes, Vivien and Lafleur, Trevor and Bonaventura, Zdeněk and Bourdon, Anne and Chabert, Pascal},
article_location = {BRISTOL},
article_number = {3},
doi = {http://dx.doi.org/10.1088/1361-6595/aa550f},
keywords = {Hall effect thruster (HET); 2D particle-in-cell (PIC) simulation; anomalous electron transport; electron drift instability},
language = {eng},
issn = {0963-0252},
journal = {PLASMA SOURCES SCIENCE AND TECHNOLOGY},
title = {2D particle-in-cell simulations of the electron drift instability and associated anomalous electron transport in Hall-effect thrusters},
url = {http://iopscience.iop.org/article/10.1088/1361-6595/aa550f},
volume = {26},
year = {2017}
}
TY - JOUR
ID - 1376064
AU - Croes, Vivien - Lafleur, Trevor - Bonaventura, Zdeněk - Bourdon, Anne - Chabert, Pascal
PY - 2017
TI - 2D particle-in-cell simulations of the electron drift instability and associated anomalous electron transport in Hall-effect thrusters
JF - PLASMA SOURCES SCIENCE AND TECHNOLOGY
VL - 26
IS - 3
SP - nestránkováno
EP - nestránkováno
PB - IOP PUBLISHING LTD
SN - 09630252
KW - Hall effect thruster (HET)
KW - 2D particle-in-cell (PIC) simulation
KW - anomalous electron transport
KW - electron drift instability
UR - http://iopscience.iop.org/article/10.1088/1361-6595/aa550f
L2 - http://iopscience.iop.org/article/10.1088/1361-6595/aa550f
N2 - In this work we study the electron drift instability in Hall-effect thrusters (HETs) using a 2D electrostatic particle-in-cell (PIC) simulation. The simulation is configured with a Cartesian coordinate system modeling the radial-azimuthal ( r –q ) plane for large radius thrusters. A magnetic field, B 0 , is aligned along the Oy axis (r direction), a constant applied electric field, E0 , along the Oz axis (perpendicular to the simulation plane), and the E0 x B0 direction is along the Ox axis (theta direction). Although electron transport can be well described by electron–neutral collisions for low plasma densities, at high densities (similar to those in typical HETs), a strong instability is observed that enhances the electron cross-field mobility; even in the absence of electron–neutral collisions. The instability generates high frequency (of the order of MHz) and short wavelength (of the order of mm) fluctuations in both the azimuthal electric field and charged particle densities, and propagates in the E0 x B0 direction with a velocity close to the ion sound speed. The correlation between the electric field and density fluctuations (which leads to an enhanced electron–ion friction force) is investigated and shown to be directly responsible for the increased electron transport. Results are compared with a recent kinetic theory, showing good agreement with the instability properties and electron transport.
ER -
CROES, Vivien, Trevor LAFLEUR, Zdeněk BONAVENTURA, Anne BOURDON and Pascal CHABERT. 2D particle-in-cell simulations of the electron drift instability and associated anomalous electron transport in Hall-effect thrusters. \textit{PLASMA SOURCES SCIENCE AND TECHNOLOGY}. BRISTOL: IOP PUBLISHING LTD, 2017, vol.~26, No~3, p.~nestránkováno, 14 pp. ISSN~0963-0252. Available from: https://dx.doi.org/10.1088/1361-6595/aa550f.
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