Miniature High Density Scandate Cathodes for Linear Beam Devices
Abstract
The work was an investigation of recent promising results by workers in China on scandate impregnated cathodes. The improvement in dispenser cathode performance due to additions of small quantities of scandium oxide has been known since at least the 1980s. But workers in China have produced breakthrough performance with verified current loadings to 100 A/cm2. These results have not been fully reproduced or understood by cathode researchers in this country. Sustained loading of 100 A/cm2 would be about a ten-fold improvement over existing technology. It would enable significant improvements in vacuum microwave, millimeter wave, and terahertz linear beam sources and amplifiers.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 14, 2008
- Accession Number
- ADA483936
Entities
People
- Arthur Carpenter
- Bernard Vancil
- Ivor Brodie