Analytical expression for the electric potential in the plasma sheath near an arc-cathode
- Department of Physics, KNT University of Technology, Tehran 19697 (Iran, Islamic Republic of)
An expression for the spatial dependence of the electric potential in a collisionless plasma sheath near an electron-emitting cathode is presented. The applicability of this expression for an arc cathode is demonstrated. Comparison with the numerical solutions of the model equations indicates that the sheath thickness and potential variation predicted by this expression are accurate in a wide range of the electron-emission yield.
- OSTI ID:
- 21120273
- Journal Information:
- Physics of Plasmas, Vol. 15, Issue 4; Other Information: DOI: 10.1063/1.2904593; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
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