Transition in electron transport in a cylindrical Hall thruster

J. B. Parker; Y. Raitses; N. J. Fisch

doi:10.1063/1.3486164

Transition in electron transport in a cylindrical Hall thruster

J. B. Parker, Y. Raitses, N. J. Fisch

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Abstract

Through the use of high-speed camera and Langmuir probe measurements in a cylindrical Hall thruster, we report the discovery of a rotating spoke of increased plasma density and light emission which correlates with increased electron transport across the magnetic field. As cathode electron emission is increased, a sharp transition occurs where the spoke disappears and electron transport decreases. This suggests that a significant fraction of the electron current might be directed through the spoke.

Original language	English (US)
Article number	091501
Journal	Applied Physics Letters
Volume	97
Issue number	9
DOIs	https://doi.org/10.1063/1.3486164
State	Published - Aug 30 2010

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.3486164

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title = "Transition in electron transport in a cylindrical Hall thruster",

abstract = "Through the use of high-speed camera and Langmuir probe measurements in a cylindrical Hall thruster, we report the discovery of a rotating spoke of increased plasma density and light emission which correlates with increased electron transport across the magnetic field. As cathode electron emission is increased, a sharp transition occurs where the spoke disappears and electron transport decreases. This suggests that a significant fraction of the electron current might be directed through the spoke.",

author = "Parker, {J. B.} and Y. Raitses and Fisch, {N. J.}",

note = "Funding Information: The authors thank Evan Davis and C. Leland Ellison for contributions to the experiments and Artem Smirnov for fruitful discussions. This material is based upon work supported under an NSF Graduate Research Fellowship. This work was also supported by the U.S. DOE under Contract No. AC02-76CH0-3073 and the AFOSR.",

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AU - Raitses, Y.

AU - Fisch, N. J.

N1 - Funding Information: The authors thank Evan Davis and C. Leland Ellison for contributions to the experiments and Artem Smirnov for fruitful discussions. This material is based upon work supported under an NSF Graduate Research Fellowship. This work was also supported by the U.S. DOE under Contract No. AC02-76CH0-3073 and the AFOSR.

PY - 2010/8/30

Y1 - 2010/8/30

N2 - Through the use of high-speed camera and Langmuir probe measurements in a cylindrical Hall thruster, we report the discovery of a rotating spoke of increased plasma density and light emission which correlates with increased electron transport across the magnetic field. As cathode electron emission is increased, a sharp transition occurs where the spoke disappears and electron transport decreases. This suggests that a significant fraction of the electron current might be directed through the spoke.

AB - Through the use of high-speed camera and Langmuir probe measurements in a cylindrical Hall thruster, we report the discovery of a rotating spoke of increased plasma density and light emission which correlates with increased electron transport across the magnetic field. As cathode electron emission is increased, a sharp transition occurs where the spoke disappears and electron transport decreases. This suggests that a significant fraction of the electron current might be directed through the spoke.

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Transition in electron transport in a cylindrical Hall thruster

Abstract

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