Emission Characteristics for , and LaB6 Cathodes
- 1 September 1980
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 19 (9) , L537
- https://doi.org/10.1143/jjap.19.l537
Abstract
Characteristics for electron beam emitted from , and axial orientation LaB6 cathodes after 100 hours of aging were studied. It is inferred from the emission pattern and cross-over image that electrons are emitted to a great extent from the top surface for the cathode and mainly from the conical surface for and cathodes at a bias voltage that gives maximum brightness. This inference clearly explains the electron beam characteristics such as brightness, emission angle and total beam current.Keywords
This publication has 2 references indexed in Scilit:
- Thermionic emission from single-crystal LaB6 tips with [100], [110], [111], and [210] orientationsJournal of Applied Physics, 1980
- Design and optimization of directly heated LaB6 cathode assemblies for electron-beam instrumentsJournal of Vacuum Science and Technology, 1978