Environmental influence on MM-type dispenser cathodes used in VED´s and propulsion systems

Author

Schirra, Martin ; Seidel, H. ; Lazurenko, Alexey ; Weis, Sebastian ; van Reijen, Benjamin ; Genovese, Antonino ; Haderspeck, Jens ; Holtmann, Peter

Author_Institution

Thales Airsystems & Electron Devices GmbH, Ulm, Germany

fYear

2013

fDate

21-23 May 2013

Firstpage

1

Lastpage

2

Abstract

In the present work the basic functional concept of the TED hollow cathode neutralizer and the Qualification philosophy for vacuum electronic cathodes will be introduced briefly. Then the results of the twofold Qualification program of the hollow cathode neutralizer will be presented in more detail. Especially the influence of the environment on the neutraliser was investigated and, it was found that the TED hollow cathode neutralizer is capable of enduring the exposition to significant amounts of humidity for several times without performance degradation. Additionally, it could be demonstrated, that the plasma operation of the neutralizer serves as proper means for the regeneration of a poisoned cathode surface.

Keywords

cathodes; millimetre wave devices; MM-type dispenser cathode; TED hollow cathode neutralizer; VED; environmental influence; plasma operation; propulsion system; vacuum electronic cathodes; Cathodes; Degradation; Discharges (electric); Plasmas; Propulsion; Qualifications; Space vehicles;

fLanguage

English

Publisher

ieee

Conference_Titel

Vacuum Electronics Conference (IVEC), 2013 IEEE 14th International

Conference_Location

Paris

Print_ISBN

978-1-4673-5976-4

Type

conf

DOI

10.1109/IVEC.2013.6571146

Filename

6571146