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Details

Electron-wall Interaction in Hall Thrusters.

DE2005836853

Publication Date	2005
Personal Author	Raitses, Y.; Staack, D.; Keidar, M.; Fisch, N. J.
Page Count	50
Abstract	Electron-wall interaction effects in Hall thrusters are studied through measurements of the plasma response to variations of the thruster channel width and the discharge voltage. The discharge voltage threshold is shown to separate two thruster regimes. Below this threshold, the electron energy gain is constant in the acceleration region and therefore, secondary electron emission (SEE) from the channel walls is insufficient to enhance electron energy losses at the channel walls. Above this voltage threshold, the maximum electron temperature saturates.
Keywords	Acceleration Electron emission Electron temperature Electrons Plasma Energy losses
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Princeton Univ., NJ. Plasma Physics Lab.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200518

Electron-wall Interaction in Hall Thrusters.

Electron-wall Interaction in Hall Thrusters.
DE2005836853

Publication Date	2005
Personal Author	Raitses, Y.; Staack, D.; Keidar, M.; Fisch, N. J.
Page Count	50
Abstract	Electron-wall interaction effects in Hall thrusters are studied through measurements of the plasma response to variations of the thruster channel width and the discharge voltage. The discharge voltage threshold is shown to separate two thruster regimes. Below this threshold, the electron energy gain is constant in the acceleration region and therefore, secondary electron emission (SEE) from the channel walls is insufficient to enhance electron energy losses at the channel walls. Above this voltage threshold, the maximum electron temperature saturates.
Keywords	Acceleration Electron emission Electron temperature Electrons Plasma Energy losses
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Princeton Univ., NJ. Plasma Physics Lab.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200518