Accession Number:
AD0689762
Title:
EMISSION RATES IN THERMIONIC DIODES,
Descriptive Note:
Corporate Author:
RAND CORP SANTA MONICA CALIF
Personal Author(s):
Report Date:
1969-06-01
Pagination or Media Count:
88.0
Abstract:
The report discusses the derivation of a new expression for the free area function for translation of adsorbed particles in the study of the surface physics of thermionic diode electrodes. A relatively new theory involves direct energy conversion through utilization of thermionic emission of electrons from a hot metal. This Memorandum studies the surface effects that control emission rates in a totally different way. Using a digital computer, the surface migrations of particles adsorbed on a surface are simulated. The simulation incorporates relevant geometrical and energetic considerations as realistically as possible, and calculates the free area for translation by a Monte-Carlo process. When the resulting expression for free area is used in calculations, a substantial improvement can be seen in the agreement between predicted and measured emission rates. Author
Descriptors:
Subject Categories:
- Electric Power Production and Distribution
- Solid State Physics