Accession Number:

ADA492753

Title:

Emission Studies on Reservoir Cathodes

Descriptive Note:

Conference paper

Corporate Author:

E BEAM INC BEAVERTON OR

Report Date:

2008-04-01

Pagination or Media Count:

3.0

Abstract:

The authors report improved emission from their miniature reservoir cathodes due to changes in emission material composition and processes. Also, the diffuser plug porosity and composition were adjusted. The activity curves on diode testers now exhibit knee temperatures of 970 degrees CB at 5 Asq cm. This is slightly above the M impregnated cathodes used as controls. Activation time also was reduced. The main improvement was the introduction of sub-micron tungsten as an activator in the reservoir and improved processes to protect emission material from water vapor. This paper presents the data and describes the compositional and process changes that were made.

Subject Categories:

  • Inorganic Chemistry
  • Electrical and Electronic Equipment
  • Metallurgy and Metallography
  • Electricity and Magnetism

Distribution Statement:

APPROVED FOR PUBLIC RELEASE