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Effects of reflections and trapped ions on the thermionic emitter sheath

Conference · · Proc., Intersoc. Energy Convers. Eng. Conf.; (United States)
OSTI ID:5515708
;
The effects of ion reflection by the double emitter sheath and trapped ions in the emitter double sheath under low current conditions are studied. The authors find that a number of conventional assumptions must be relaxed, and that the ''Bohm'' criterion must be generalized. In addition isothermal and non-isothermal calculations indicate that reflected ions and trapped ions increase arc-drop, while experimental devices show a substantial decrease in arc-drop in the ''low current plateau''.
Research Organization:
Mechanical and Aerospace Engineering Dept. Princeton University, Princeton, NJ
OSTI ID:
5515708
Report Number(s):
CONF-830812-
Conference Information:
Journal Name: Proc., Intersoc. Energy Convers. Eng. Conf.; (United States) Journal Volume: 1
Country of Publication:
United States
Language:
English

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Related Subjects

30 DIRECT ENERGY CONVERSION
300403* -- Thermionic Converters-- Materials
Components
& Auxiliaries
BOHM CRITERION
CALCULATION METHODS
CHARGED PARTICLES
CURRENTS
ELECTRIC CURRENTS
IONS
ISOTHERMAL PROCESSES
NESDPS Office of Nuclear Energy Space and Defense Power Systems
REFLECTION
THERMIONIC EMITTERS
TRAPPING