Space Charge Saturated Sheath Regime and Electron Temperature Saturation in Hall Thrusters
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.
- Research Organization:
- Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC) (US)
- DOE Contract Number:
- AC02-76CH03073
- OSTI ID:
- 837855
- Report Number(s):
- PPPL-4058; TRN: US0501119
- Resource Relation:
- Other Information: PBD: 16 Mar 2005
- Country of Publication:
- United States
- Language:
- English
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