Resumen
Scandate cathodes have the potential to replace conventional cathodes because of their improved emission characteristics. Nevertheless, it remains a challenge in this field to produce scandate cathodes with uniform surface emission in a reproducible manner. In this study, we report on scandate cathode emitters prepared from a novel nano-scandia/tungsten composite powder. Processing improvements have been developed to yield high-quality emitter surfaces. Emission testing demonstrates a greater than 200°C decrease (improvement) in knee temperature versus the standard M-type cathode. There is an on-going effort to quantify the work function of the cathode surface prior to and following activation.
| Idioma original | English |
|---|---|
| Título de la publicación alojada | 2020 IEEE 21st International Conference on Vacuum Electronics, IVEC 2020 |
| Páginas | 79-80 |
| Número de páginas | 2 |
| ISBN (versión digital) | 9781538682883 |
| DOI | |
| Estado | Published - oct 19 2020 |
| Evento | 21st IEEE International Conference on Vacuum Electronics, IVEC 2020 - Monterey, United States Duración: oct 19 2020 → oct 22 2020 |
Serie de la publicación
| Nombre | 2020 IEEE 21st International Conference on Vacuum Electronics, IVEC 2020 |
|---|
Conference
| Conference | 21st IEEE International Conference on Vacuum Electronics, IVEC 2020 |
|---|---|
| País/Territorio | United States |
| Ciudad | Monterey |
| Período | 10/19/20 → 10/22/20 |
Nota bibliográfica
Publisher Copyright:© 2020 IEEE.
Financiación
This work was financially supported by Engi-Mat Co. (formerly nGimat LLC) through U.S. Navy STTR contract N00253-17-C-0014.
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Electronic, Optical and Magnetic Materials
- Instrumentation
Huella
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