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Partial trapping of secondary-electron emission in a Hall thruster plasma

Abstract:

Secondary-electron emission at the ceramic walls of a Hall thruster modifies the potential jump of the wall Debye sheaths and thus the electron energy losses to the wall. Because of the low plasma collisionality the two counterstreaming beams of secondary electrons are not expected to be totally trapped within the bulk of the discharge. In order to analyze the effects of partial trapping of secondary electrons on the presheathsheath radial structure, a macroscopic model is formulated. The pla...

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Publication status:
Published

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Publisher copy:
10.1063/1.1943327

Authors


Journal:
PHYSICS OF PLASMAS
Volume:
12
Issue:
7
Pages:
1-7
Publication date:
2005-07-05
DOI:
ISSN:
1070-664X
URN:
uuid:92a3d2d2-5546-4427-b3ae-553912d0c51e
Source identifiers:
196024
Local pid:
pubs:196024
Language:
English

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