Field Effect Electron Emission
Abstract
The emission of electrons from materials at ambient temperature due to the field effect is a subject of extensive study and experimentation. Although large current densities, greater than 100 A/sq cm, have been realized from sharp points, few commercial applications have resulted because of the problems associated with fabricating multiple point sources. Recent developments in fabrication procedures have resulted in multiple point sources of sufficient size and uniformity to be applicable to electronic devices such as electron tubes which require a copious supply of electrons for operation. Current densities of near 100 mA/sq cm have been realized from early sample indicating that these new multiple point sources emit electrons in sufficient numbers to replace thermionic emitters in several classes of electron tubes.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 30, 1971
- Accession Number
- AD0738529
Entities
People
- Joe Shelton