NDLI: Electron Cross-Field Transport in 2D Hybrid Hall Thruster Simulation

Content Provider	IEEE Xplore Digital Library
Author	Allis, M.K. Thomas, C. Gascon, N. Cappelli, M.A. Fernandez, E.
Copyright Year	2005
Description	Author affiliation: Stanford Univ., CA (Allis, M.K.; Thomas, C.; Gascon, N.; Cappelli, M.A.)
Abstract	Summary form only given. A two-dimensional radial-axial Hall thruster simulation has been developed with the intent of better understanding the physical phenomena governing Hall thruster operation. In the simulation, the electrons are treated as a one-dimensional fluid, while the ions and neutrals are advanced using a particle-in-cell approach. The two solutions are coupled assuming quasi-neutrality. At each timestep, the transient, spatially-varying electron temperature and plasma potential are calculated through solution of the electron energy equation, a generalized Ohm's law, and a current conservation equation. The computational domain of the simulation corresponds to the interior channel of the Stanford Hall thruster and the near field plume region. Experimentally, electron diffusion across magnetic field lines is observed to be higher than predicted by classical diffusion theory. Therefore, the primary purpose of this study is to evaluate models for electron cross-field mobility through comparison of simulation results with experimental measurements in the Stanford Hall thruster. In addition to classical transport, models for the enhanced cross-field conductivity will also be examined, such as Bohm mobility and an experimentally based mobility. A third model will attempt to illustrate the cause of the anomalous diffusion through a transient determination of mobility using real-time calculations of the plasma properties. This transient mobility attempts to account for fluctuations and non-local effects including first order spatial and temporal derivatives in the electric field. These quantities modify transport by distorting the electron cyclotron orbit, and adjusting the classical expressions for polarization and cross-field drift. Substantial modifications to electron transport results
Sponsorship	Plasma Sci. Appl. Comm. IEEE Nucl. Plasma Sci. Soc.
Starting Page	175
Ending Page	175
File Size	1200305
Page Count	1
File Format	PDF
ISBN	0780393007
ISSN	07309244
DOI	10.1109/PLASMA.2005.359186
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-06-20
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Plasma temperature Equations Magnetic field measurement Plasma simulation Computational modeling Electron mobility Extraterrestrial measurements Conductivity Orbital calculations Plasma properties
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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1 a comparison of 2-d hybrid hall thruster model to experimental measurements.

An axial- azimuthal hybrid simulation of coaxial hall thrusters.

1 design and construction of an electron trap for studying cross- field mobility in hall thrusters.

1 mobility studies of a pure electron plasma in hall thruster fields.

Experimental investigation of Hall thruster magnetic field topography

Shear-Based Model for Electron Transport in Hybrid Hall Thruster Simulations

Electron cross-field transport in a miniaturized cylindrical Hall thruster

Optimization of Hall thruster magnetic field topography

The Effect of Pressure on the Plume Divergence in the Hall Thruster

Electron Cross-Field Transport in 2D Hybrid Hall Thruster Simulation

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1 a comparison of 2-d hybrid hall thruster model to experimental measurements.

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1 design and construction of an electron trap for studying cross- field mobility in hall thrusters.

1 mobility studies of a pure electron plasma in hall thruster fields.

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Shear-Based Model for Electron Transport in Hybrid Hall Thruster Simulations

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