Experimental study of the effect of propellant asymmetrical distribution on anode current in a Hall effect thruster

Ding, Minghao; Li, Hong; Ding, Yongjie; Liu, Hui; Yu, Daren; Wang, Xiaogang

doi:10.1016/j.physleta.2019.07.008

Cited by 9 publications

(2 citation statements)

References 13 publications

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“…Enhanced electron transport has also been reported during azimuthal nonuniform propellant supply. 16,22,23 In our past work 16 , we experimentally observed a non-zero equilibrium E θ . Electron transport by the induced E θ in high Hall parameter E × B plasmas provides mobility that is 2-3 orders of magnitude higher than the classical mobility, and becomes the dominant cross-field transport mechanism which causes the effective mobility to be proportional to 1/B.…”

Section: Introductionmentioning

confidence: 84%

Evolution of electron cross-field transport induced by an equilibrium azimuthal electric field in an $\mathrm{E}\times\mathrm{B}$ Hall thruster discharge under an azimuthally inhomogeneous neutral supply

Bak,

Kawashima,

Simmonds

et al. 2021

Preprint

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The electron cross-field transport by the induced azimuthal electric field in a Hall thruster exhibits the mobility scaled by 1/B. This study investigates parameters affecting this transport over a Hall thruster's distinct regions, such as the ionization, acceleration, and plume region. The main focus is on the nonzero equilibrium azimuthal electric field induced by an azimuthally inhomogeneous neutral supply. A fast Fourier transform analysis of the plasma structure reveals that the wavenumber k of the azimuthal plasma structure increases from k = 2, which is the input condition, to k = 4 in the plume region, and that the total axial flux caused by the azimuthal electric field is mainly induced from the structures of the dominant Fourier components. The azimuthal phase relation between plasma potential and density is formed to maximize the axial electron flux at the plume region and starts varying along with other plasma properties as electrons flow toward the acceleration region. The spatial evolution of the effective axial mobility coefficient is extracted, and its regional characteristics are discussed.

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Section: Introductionmentioning

confidence: 84%

Evolution of electron cross-field transport induced by an equilibrium azimuthal electric field in an $\mathrm{E}\times\mathrm{B}$ Hall thruster discharge under an azimuthally inhomogeneous neutral supply

Bak,

Kawashima,

Simmonds

et al. 2021

Preprint

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“…When the thruster operated at a volume flow rate of 50 sccm, the vacuum pressure was below 5×10 −3 Pa. The uncertainty of the facility pressure was below 10% [26,27]. The uncertainty of the gas flow controller was approximately 1%, and the purity of the propellant was 99.9995%.…”

Section: Experimental Equipmentmentioning

confidence: 98%

Matching characteristics of magnetic field configuration and chamfered channel wall in a magnetically shielded Hall thruster

Wang

Zhong

et al. 2021

Plasma Sci. Technol.

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To date, the selection of the magnetic field line used to match the chamfered inner and outer channel walls in a magnetically shielded Hall thruster has not been quantitatively studied. Hence, an experimental study was conducted on a 1.35 kW magnetically shielded Hall thruster with a xenon propellant. Different magnetic field lines were chosen, and corresponding tangentially matched channel walls were manufactured and utilized. The results demonstrate that high performance and a qualified anti-sputtering effect cannot be achieved simultaneously. When the magnetic field lines that match the chamfered wall have a strength at the channel centerline of less than 12% of the maximum field strength, the channel wall can be adequately protected from ion sputtering. When the magnetic field lines have a strength ratio of 12%-20%, the thruster performance is high. These findings provide the first significant quantitative design reference for the match between the magnetic field line and chamfered channel wall in magnetically shielded Hall thrusters.

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Modeling and simulation of xenon storage and supply system for electric propulsion system based on fundamental equation of state

Chen,

Yan,

Jia

et al. 2024

Applied Thermal Engineering

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Experimental study of the effect of propellant asymmetrical distribution on anode current in a Hall effect thruster

Cited by 9 publications

References 13 publications

Evolution of electron cross-field transport induced by an equilibrium azimuthal electric field in an $\mathrm{E}\times\mathrm{B}$ Hall thruster discharge under an azimuthally inhomogeneous neutral supply

Evolution of electron cross-field transport induced by an equilibrium azimuthal electric field in an $\mathrm{E}\times\mathrm{B}$ Hall thruster discharge under an azimuthally inhomogeneous neutral supply

Matching characteristics of magnetic field configuration and chamfered channel wall in a magnetically shielded Hall thruster

Modeling and simulation of xenon storage and supply system for electric propulsion system based on fundamental equation of state

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