Title :
Surface characterization of dispenser cathodes at operating temperature and in-situ emission measurements
Author :
Roquais, Jean-Michel
Author_Institution :
Thales Electron Devices, Velizy-Villacoublay, France
fDate :
June 30 2014-July 4 2014
Abstract :
A unique equipment has been developed to allow a complete characterization of thermionic cathodes in terms of surface chemistry at operating temperature and in-situ electronic emission. Auger spectroscopy is performed and coupled with cathode emission measurement in a close-spaced diode configuration. The relationship between chemistry and cathode emission will be discussed.
Keywords :
Auger electron spectroscopy; surface chemistry; thermionic cathodes; thermionic electron emission; Auger spectroscopy; cathode emission measurement; close-spaced diode configuration; dispenser cathodes; electronic emission; surface characterization; surface chemistry; thermionic cathodes; Barium; Cathodes; Chemistry; Current measurement; Surface treatment; Temperature measurement; Thermionic emission;
Conference_Titel :
Vacuum Electron Sources Conference (IVESC), 2014 Tenth International
Conference_Location :
St. Petersburg
Print_ISBN :
978-1-4799-5770-5
DOI :
10.1109/IVESC.2014.6892069
