Magnetic field deformation due to electron drift in a Hall thruster

Han, Lina; Ding, Yongjie; Xu, Zhenming; Wei, Liqiu; Yu, Daren

doi:10.1063/1.4973874

Cited by 3 publications

(1 citation statement)

References 23 publications

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“…In reference [6], the experimental result shows that the largest increase was approximately 70 G on the centerline of 1.6 kW operation condition. In reference [7], the simulation results show that the maximum reduction in radial magnetic field is 4.5 and 10.8 G for 5 and 15 mg s −1 anode flow rates, respectively. Therefore, the measurement of thruster's magnetic field under operation is important for the optimization of its design and to understand the complex physical processes occurring under its operation.…”

Section: Introductionmentioning

confidence: 99%

A method to measure the in situ magnetic field in a Hall thruster based on the Faraday rotation effect

Han¹,

Gao²,

Chen³

et al. 2019

Plasma Sci. Technol.

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Section: Introductionmentioning

confidence: 99%

A method to measure the in situ magnetic field in a Hall thruster based on the Faraday rotation effect

Han¹,

Gao²,

Chen³

et al. 2019

Plasma Sci. Technol.

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An integrated fluid simulation platform on Hall thruster plasmas

Liu

Liu³

et al. 2022

AIP Advances

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In this work, a newly integrated fluid simulation platform, named DUT-HTFS, is developed for the multiple physical fields in Hall thrusters. The integrated simulation platform includes three inter-related parts: the geometry module, background magnetic field module, and plasma module. Using the geometry module, three sets of meshes for a Hall thruster are obtained. One set of the mesh is for the calculation of the background magnetic fields, the second is for the electric potentials, and the third is for the plasmas. Based on the meshes and using the background magnetic field module, a numerical result of the background magnetic field in the Hall thruster is obtained and discussed. Based on the meshes and the numerical result of the background magnetic field, using the plasma module, the numerical results of the plasmas in the Hall thruster are obtained. The results of the plasma density, the electric field, the electric potential, and the ionization rate are similar to those from HPHALL (Hybrid-PIC Hall thruster code) simulations and are qualitatively consistent with the experimental results from the literature. Furthermore, varying the neutral gas pressure from 0.02 to 0.03 Torr, the numerical results of the plasmas in the Hall thruster are obtained. These results reveal that neutral gas pressure effects contributed considerably to the shape, location, and magnitude of the peak plasma properties, including the ion density, axial electric field, and ionization rate. This fluid simulation platform could provide a new angle of view for better understanding of the physical mechanism in Hall thrusters.

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Fluid simulation on effect of background magnetic field on plasma characteristics in a Hall thruster

Liu

Liu³

et al. 2022

AIP Advances

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Herein, the effect of the background magnetic field on plasma characteristics in a Hall thruster is numerically investigated using DUT-HTFS [Li et al., AIP Adv. 12, 015117 (2022)], an integrated fluid simulation platform on Hall thruster plasmas. The research shows that the background magnetic field significantly influences the distribution of the plasma density, especially the radial profiles of the plasma density near the ionization region and the acceleration region. In addition, the positions of the peak values of the electron power absorptions mainly occur near the dielectric walls of the exhaust plane, and the electron power absorption mechanism is mainly dominated by the Ohmic heating. The peak values of the axial electron current density on the inner and outer dielectric walls are higher than that on the centerline. This phenomenon is closely related to the near wall conduction mechanism of the electrons. In addition, the background magnetic field significantly influences the shapes, positions, and magnitudes of the peak values of the plasma parameters, such as the plasma density, the electron current density, the axial electric field, the electric potential, and the ionization rate. These results will help us to provide a valuable reference and reduce the risk for the experimental test programs and the applications of Hall thrusters in the future.

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Magnetic field deformation due to electron drift in a Hall thruster

Cited by 3 publications

References 23 publications

A method to measure the in situ magnetic field in a Hall thruster based on the Faraday rotation effect

A method to measure the in situ magnetic field in a Hall thruster based on the Faraday rotation effect

An integrated fluid simulation platform on Hall thruster plasmas

Fluid simulation on effect of background magnetic field on plasma characteristics in a Hall thruster

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