skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Temperature Gradient in Hall Thrusters

Abstract

Plasma potentials and electron temperatures were deduced from emissive and cold floating probe measurements in a 2 kW Hall thruster, operated in the discharge voltage range of 200-400 V. An almost linear dependence of the electron temperature on the plasma potential was observed in the acceleration region of the thruster both inside and outside the thruster. This result calls into question whether secondary electron emission from the ceramic channel walls plays a significant role in electron energy balance. The proportionality factor between the axial electron temperature gradient and the electric field is significantly smaller than might be expected by models employing Ohmic heating of electrons.

Authors:
; ;
Publication Date:
Research Org.:
Princeton Plasma Physics Lab., NJ (US)
Sponsoring Org.:
USDOE Office of Science (SC) (US)
OSTI Identifier:
820206
Report Number(s):
PPPL-3905
TRN: US0305720
DOE Contract Number:  
AC02-76CH03073
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 24 Nov 2003
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ACCELERATION; CERAMICS; ELECTRIC FIELDS; ELECTRON EMISSION; ELECTRON TEMPERATURE; ELECTRONS; ENERGY BALANCE; HEATING; PLASMA POTENTIAL; PROBES; TEMPERATURE GRADIENTS; THRUSTERS; PLASMA WALL INTERACTION; HALL THRUSTERS

Citation Formats

D. Staack, Y. Raitses, and N.J. Fisch. Temperature Gradient in Hall Thrusters. United States: N. p., 2003. Web. doi:10.2172/820206.
D. Staack, Y. Raitses, & N.J. Fisch. Temperature Gradient in Hall Thrusters. United States. doi:10.2172/820206.
D. Staack, Y. Raitses, and N.J. Fisch. Mon . "Temperature Gradient in Hall Thrusters". United States. doi:10.2172/820206. https://www.osti.gov/servlets/purl/820206.
@article{osti_820206,
title = {Temperature Gradient in Hall Thrusters},
author = {D. Staack and Y. Raitses and N.J. Fisch},
abstractNote = {Plasma potentials and electron temperatures were deduced from emissive and cold floating probe measurements in a 2 kW Hall thruster, operated in the discharge voltage range of 200-400 V. An almost linear dependence of the electron temperature on the plasma potential was observed in the acceleration region of the thruster both inside and outside the thruster. This result calls into question whether secondary electron emission from the ceramic channel walls plays a significant role in electron energy balance. The proportionality factor between the axial electron temperature gradient and the electric field is significantly smaller than might be expected by models employing Ohmic heating of electrons.},
doi = {10.2172/820206},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Nov 24 00:00:00 EST 2003},
month = {Mon Nov 24 00:00:00 EST 2003}
}

Technical Report:

Save / Share: