2017
2D particle-in-cell simulations of the electron drift instability and associated anomalous electron transport in Hall-effect thrusters
CROES, Vivien, Trevor LAFLEUR, Zdeněk BONAVENTURA, Anne BOURDON, Pascal CHABERT et. al.Základní údaje
Originální název
2D particle-in-cell simulations of the electron drift instability and associated anomalous electron transport in Hall-effect thrusters
Autoři
CROES, Vivien (250 Francie), Trevor LAFLEUR (710 Jižní Afrika), Zdeněk BONAVENTURA (203 Česká republika, garant, domácí), Anne BOURDON (250 Francie) a Pascal CHABERT (250 Francie)
Vydání
PLASMA SOURCES SCIENCE AND TECHNOLOGY, BRISTOL, IOP PUBLISHING LTD, 2017, 0963-0252
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10305 Fluids and plasma physics
Stát vydavatele
Velká Británie a Severní Irsko
Utajení
není předmětem státního či obchodního tajemství
Impakt faktor
Impact factor: 3.939
Kód RIV
RIV/00216224:14310/17:00094681
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000395698300001
Klíčová slova anglicky
Hall effect thruster (HET); 2D particle-in-cell (PIC) simulation; anomalous electron transport; electron drift instability
Změněno: 13. 4. 2018 10:35, Ing. Nicole Zrilić
Anotace
V originále
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.
Návaznosti
GA15-04023S, projekt VaV |
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LO1411, projekt VaV |
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