Sintered Tungsten Wire Cathodes

Author

Ives, Lawrence ; Miram, George ; Falce, Lou ; Gunther, Kim ; Curtis, Marc ; Schwartzkopf, Steve ; Witherspoon, Ron

Author_Institution

Calabazas Creek Res., San Mateo

fYear

2007

fDate

15-17 May 2007

Firstpage

1

Lastpage

2

Abstract

At IVEC 2006, Calabazas Creek Research, Inc. (CCR) reported on a novel technique to fabricate controlled porosity cathodes. In this process, 20 micron diameter tungsten wires are bundled and sintered to create a porous structure where the pores penetrate through the length of the material. With control of the packing, wire size, and length, the material should be ideal for caps on reservoir cathodes. The parameters could be selected to provide the desired barium diffusion, depending on the required life time and current emission density. This article shows a cross section of sintered tungsten wires. CCR is fabricating a test cathode from this material. Assembly is almost complete and testing is scheduled for February 2007. The latest test results will be presented.

Keywords

cathodes; tungsten; wires (electric); Calabazas Creek Research, Inc; barium diffusion; controlled porosity cathodes; reservoir cathodes; sintered tungsten wire cathodes; Assembly; Barium; Bonding; Cathodes; Laboratories; Reservoirs; Testing; Tungsten; USA Councils; Wire;

fLanguage

English

Publisher

ieee

Conference_Titel

Vacuum Electronics Conference, 2007. IVEC '07. IEEE International

Conference_Location

Kitakyushu

Print_ISBN

1-4244-0633-1

Type

conf

DOI

10.1109/IVELEC.2007.4283272

Filename

4283272