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Effects of Background Pressure on SPT-140 Hall Thruster Performance
Abstract
The performance of many Hall thrusters has been shown to exhibit sensitivity to background pressure in ground-based test facilities, and this property can have an impact on the prediction of in-space performance. The SPT-140 Hall thruster, similar in design to the SPT-100 thruster, which shows such sensitivity, was subjected to a series of tests to characterize the effects of background pressure on thruster performance over a discharge power range of 0.9–4.5 kW. Thrust sensitivity to pressure, in an absolute sense, was largest at 4.5 kW and decreased with power until there was little-to-no measurable effect at 0.9 kW. In a relative sense, thrust sensitivity was similar at all powers above 0.9 kW with about 2–4% higher thrust measured at than at the lowest operating pressure. Thruster magnetic field sensitivity, examined as a function of magnet current, did not have a strong dependence on facility pressure.
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“The Particle-in-Cell (PIC) technique 5,31,36-39 is a Lagrangian/Eulerian (or particle-mesh) method, applicable to low temperature and low pressure discharges like those of electric thrusters that are characterized by a weakly coupled and low collisional plasma, exhibiting non-equilibrium behavior and non-local properties.”
From Plasma propulsion modeling with particle-based algorithms (2023) · cites this paper as [31]
In the citing paper
“Among the different kinetic approaches 31 available, the particle representation allows a simple and intuitive implementation to account for a detailed description of plasma-gas and plasma-wall interactions, although it suffers from the inevitable but controllable limitation due to inherent discrete particle noise 32-35 and from its computationally intensive nature.”
From Plasma propulsion modeling with particle-based algorithms (2023) · cites this paper as [31]
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Research works printed but not linked: 22
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Cited by
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Review of High-Power Electrostatic and Electrothermal Electric Propulsion
Jovel, D. R., Walker, M. L. R., & Herman, D. (2022) · Journal of Propulsion and Power · doi:10.2514/1.b38594 · Cited by 38
Plasma propulsion modeling with particle-based algorithms
Taccogna, F., Cichocki, F., Eremin, D., Fubiani, G., & Garrigues, L. (2023) · Journal of Applied Physics · doi:10.1063/5.0153862 · Cited by 29
Metadata
- Authors
- Snyder, J. S., Lenguito, G., Frieman, J. D., Haag, T. W., & Mackey, J. A.
- Affiliations
- California Institute of Technology (US)
- Maxar, Palo Alto, California 94303
- Glenn Research Center (US)
- NASA Glenn Research Center, Cleveland, Ohio 44135
- Venue
- Journal of Propulsion and Power
- Published
- 2020-09
- Volume
- 36
- Issue
- 5
- Pages
- 668-676
- ISSN
- 0748-4658 (ISSN-L)
- 1533-3876
- OpenAlex
- W3024552435
- Cited by
- 50
- References
- 0
- Citations by year
- 2026: 13 · 2025: 12 · 2024: 4 · 2023: 9 · 2022: 4 · 2021: 8
- FWCI
- 1.80
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Propulsion and Power (publishedVersion)
- Funders
- NASA
- Topics
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Low-Pressure Plasma Processing and Diagnostics
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Vacuum and Plasma Arcs
- Physical Sciences › Engineering › Aerospace Engineering › Electromagnetic Launch and Propulsion Technology
- Keywords
- Hall thruster, background pressure, discharge pressure, magnetic field sensitivity, electric propulsion, ground testing
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- CoChat. (2026). Citation check: Effects of Background Pressure on SPT-140 Hall Thruster Performance. https://app.cochat.ai/papers/10.2514/1.b37702
- The paper
- Snyder, J. S., Lenguito, G., Frieman, J. D., Haag, T. W., & Mackey, J. A. (2020). Effects of Background Pressure on SPT-140 Hall Thruster Performance. Journal of Propulsion and Power. https://doi.org/10.2514/1.b37702
