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Study on Anomalous Electron Diffusion in the Hall Effect Thruster
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논문 기본 정보

Type
Academic journal
Author
Kybeom Kwon (Air Force Academy) Mitchell L. R. Walker (Georgia Institute of Technology) Dimitri N. Mavris (Georgia Institute of Technology)
Journal
The Korean Society for Aeronautical & Space Sciences International Journal of Aeronautical and Space Sciences Vol.15 No.3 KCI Accredited Journals SCIE
Published
2014.9
Pages
320 - 334 (15page)

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Study on Anomalous Electron Diffusion in the Hall Effect Thruster
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Abstract· Keywords

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Over the last two decades, numerous experimental and numerical efforts have examined physical phenomena in plasma discharge devices. The physical mechanisms that govern the anomalous electron diffusion from the cathode to the anode in the Hall Effect Thruster (HET) are not fully understood. This work used 1-D numerical method to improve our understanding and gain insight into the effect of the anomalous electron diffusion in the HET. To this end, numerical solutions are compared with various experimental HET performance measurements and the effects of anomalous electron diffusion are analyzed. The relationships between the anomalous electron diffusion and important parameters of the HET are also studied quantitatively. The work identifies the cathode mass flow rate fraction, radial magnetic field distribution, and discharge voltage as significant factors that affect anomalous electron diffusion. Additionally, the study demonstrates a computational process to determine the radial magnetic field distribution required to achieve specific thruster performance goals.
#Hall effect thruster #anomalous electron diffusion #statistical approach

Contents

Abstract
1. Introduction
2. The Numerical Method and Statistical Approach
3. Study on the Effect of the Anomalous Electron Diffusion with the SPT-100 Experimental Results
4. Study on the Effect of the Anomalous Electron Diffusion with the High-Power HET Experimental Results
5. Approximation of Radial Magnetic Field Distribution with Given Performance Goals
6. Conclusions
References

References (29)

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1. [학술지(정기간행물)] - Oh, D. Y. / 2007 / Evaluation of solar electric propulsion technologies for discovery class missions / Journal of Propulsion and Power 44 : 399 ~ 411 google schola 2. [학술지(정기간행물)] - Morozov, A. / 1972 / Plasma accelerator with closed electron drift and extended acceleration zone / Soviet Physics – Techincal Physics 17 : 38 ~ 45 google schola 3. [학술지(정기간행물)] - Janes, G. / 1966 / Anomalous electron diffusion and ion acceleration in a low-density plasma / Physics of Plasmas 9 : 1115 ~ 1123 google schola 4. [학술지(정기간행물)] - Koo, J. W. / 2004 / Computational model of a Hall thruster / Computer Physics Communications 164 : 442 ~ 447 google schola 5. [학술지(정기간행물)] - Boniface, C. / 2006 / Anomalous cross field electron transport in a Hall effect thruster / Applied Physics Letter 89 : 161503 ~ google schola

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