Characteristics of electron near-wall transport under two-dimensional dynamic sheath in a Hall effect thruster

Li, Hong; Zhang, Fengkui; Liu, Hui; Yu, Daren

doi:10.1063/1.3461166

Cited by 16 publications

(2 citation statements)

References 12 publications

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“…decreasing the incident electron energy, 27 and (ii) increasing the temperature, 26 the aging effects on the EEY should be reinforced in the ceramic irradiated with electrons of only several tens of volts and heated to a temperature of 800 K-1100 K. In addition to the effects of the electron irradiation, ion erosion continuously modifies the surface and near-surface composition and topography. As the EEY highly depends both on the surface roughness 28,29 and the chemical composition, obviously the secondary emission evolves during the life of HET.…”

Section: Practical Consequencesmentioning

confidence: 99%

Electron-emission yield under electron impact of ceramics used as channel materials in Hall-effect thrusters

Tondu¹,

Belhaj²,

Inguimbert³

2011

Journal of Applied Physics

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We report measurement of electron-emission yield (EEY) under the impact of electrons on materials of Hall-effect-thruster (HET) interest: BN, BN-SiO 2 , and Al 2 O 3 . The effects of the material aging (under electron irradiation) on the yield of BN and Al 2 O 3 are investigated. The EEY of BN grows with electron exposure, whereas that of Al 2 O 3 reduces. A simple analysis of our experimental results indicates that these variations are most likely because of surface and near surface composition changes caused by the electron beam. The representativeness of EEY measurements on ceramics that have not suffered from the specific environment of a HET (ion and electron bombardment) is discussed.

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Section: Practical Consequencesmentioning

confidence: 99%

Electron-emission yield under electron impact of ceramics used as channel materials in Hall-effect thrusters

Tondu¹,

Belhaj²,

Inguimbert³

2011

Journal of Applied Physics

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“…For analyzing the behavior of the plasma in the Hall thruster, the typical method is particle-in-cell Monte Carlo collisional (PIC-MCC) simulation, which combines the PIC method with the Monte Carlo method. A 2D-3V PIC-MCC model has been developed by Harbin Institute of Technology for characterizing the electron transport and wall sheath of Hall thrusters [18][19][20][21][22][23]. The densities of ions and electrons could be described by simulating their trajectories.…”

Section: Description Of the Pic Model And Boundary Conditionsmentioning

confidence: 99%

Simulation study on the influence of magnetic field in the near-anode region on anode power deposition of ATON-type Hall thruster

Su¹,

Li²,

Ding³

et al. 2020

Plasma Sci. Technol.

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The highest deposition of power and temperature is always near the cusp of the ATON-type Hall thruster. This shows that when there are electrons gathering at the cusp, the distribution of heat load will be uniform, which will potentially damage the reliability. Therefore, we optimize the magnetic field near the anode. We changed the magnetic field characteristics in the near-anode region with an additional magnetic screen, and performed numerical simulation with particle-incell simulation. The simulation results show that the magnetic field of the thruster with the additional magnetic screen can alleviate the over-concentration of power deposition on the anode and reduce the power deposition in the anode by 20%, while ensuring that the overall magnetic field characteristics do not change significantly.

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Influence of hollow anode position on the performance of a hall-effect thruster with double-peak magnetic field

Ding

Sun

et al. 2017

Vacuum

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Characteristics of electron near-wall transport under two-dimensional dynamic sheath in a Hall effect thruster

Cited by 16 publications

References 12 publications

Electron-emission yield under electron impact of ceramics used as channel materials in Hall-effect thrusters

Electron-emission yield under electron impact of ceramics used as channel materials in Hall-effect thrusters

Simulation study on the influence of magnetic field in the near-anode region on anode power deposition of ATON-type Hall thruster

Influence of hollow anode position on the performance of a hall-effect thruster with double-peak magnetic field

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