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Title: Space Charge Saturated Sheath Regime and Electron Temperature Saturation in Hall Thrusters

Abstract

Secondary electron emission in Hall thrusters is predicted to lead to space charge saturated wall sheaths resulting in enhanced power losses in the thruster channel. Analysis of experimentally obtained electron-wall collision frequency suggests that the electron temperature saturation, which occurs at high discharge voltages, appears to be caused by a decrease of the Joule heating rather than by the enhancement of the electron energy loss at the walls due to a strong secondary electron emission.

Authors:
; ; ;
Publication Date:
Research Org.:
Princeton Plasma Physics Lab., Princeton, NJ (US)
Sponsoring Org.:
USDOE Office of Science (SC) (US)
OSTI Identifier:
837855
Report Number(s):
PPPL-4058
TRN: US0501119
DOE Contract Number:  
AC02-76CH03073
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 16 Mar 2005
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ELECTRON EMISSION; ELECTRON TEMPERATURE; ELECTRONS; JOULE HEATING; POWER LOSSES; SATURATION; SPACE CHARGE; THRUSTERS; ION SOURCES; PLASMA DYNAMICS; PLASMA-WALL INTERACTION; PROBES (ELECTRIC,MAGNETIC); SHEATH

Citation Formats

Y. Raitses, D. Staack, A. Smirnov, and N.J. Fisch. Space Charge Saturated Sheath Regime and Electron Temperature Saturation in Hall Thrusters. United States: N. p., 2005. Web. doi:10.2172/837855.
Y. Raitses, D. Staack, A. Smirnov, & N.J. Fisch. Space Charge Saturated Sheath Regime and Electron Temperature Saturation in Hall Thrusters. United States. doi:10.2172/837855.
Y. Raitses, D. Staack, A. Smirnov, and N.J. Fisch. Wed . "Space Charge Saturated Sheath Regime and Electron Temperature Saturation in Hall Thrusters". United States. doi:10.2172/837855. https://www.osti.gov/servlets/purl/837855.
@article{osti_837855,
title = {Space Charge Saturated Sheath Regime and Electron Temperature Saturation in Hall Thrusters},
author = {Y. Raitses and D. Staack and A. Smirnov and N.J. Fisch},
abstractNote = {Secondary electron emission in Hall thrusters is predicted to lead to space charge saturated wall sheaths resulting in enhanced power losses in the thruster channel. Analysis of experimentally obtained electron-wall collision frequency suggests that the electron temperature saturation, which occurs at high discharge voltages, appears to be caused by a decrease of the Joule heating rather than by the enhancement of the electron energy loss at the walls due to a strong secondary electron emission.},
doi = {10.2172/837855},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2005},
month = {3}
}