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

Subject Categories:

  • Electric Power Production and Distribution
  • Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE