Power loss in open cavity diodes and a modified Child-Langmuir law
- Theoretical Physics Division, Bhabha Atomic Research Centre, Mumbai 400 085 (India)
Diodes used in most high power devices are inherently open. It is shown that under such circumstances, there is a loss of electromagnetic radiation leading to a lower critical current as compared to closed diodes. The power loss can be incorporated in the standard Child-Langmuir framework by introducing an effective potential. The modified Child-Langmuir law can be used to predict the maximum power loss for a given plate separation and potential difference as well as the maximum transmitted current for this power loss. The effectiveness of the theory is tested numerically.
- OSTI ID:
- 20764552
- Journal Information:
- Physics of Plasmas, Vol. 12, Issue 9; Other Information: DOI: 10.1063/1.2030387; (c) 2005 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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