STUDIES OF PRIMARY ELECTRON SOURCES.
Abstract
Operation of a BaO cathode in the Ba vapor is analyzed using irreversible thermodynamic arguments; preliminary data are examined in terms of the derived quantities. An energy level diagram for a BaO coating, including coating potential drop, is developed from photoelectric energy distributions. Results of preliminary attempts to produce BaS cathodes are presented. Studies of thin film Al-Al2O3-M tunnel devices are described. These include dependence of J-V characteristics on temperature, past history, and high current density; current transfer through an Al central layer; and emission into vacuum through an Au overlayer under pulsed and dc conditions. The possibility of enhanced emission from Ba-covered superconducting field emitters and from thin film superconductors is discussed. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1963
- Accession Number
- AD0413477
Entities
People
- D. E. Anderson
Organizations
- University of Minnesota