Sintered wire cathode
- San Jose, CA
- Saratoga, CA
A porous cathode structure is fabricated from a plurality of wires which are placed in proximity to each other in elevated temperature and pressure for a sintering time. The sintering process produces the porous cathode structure which may be divided into a plurality of individual porous cathodes, one of which may be placed into a dispenser cathode support which includes a cavity for containing a work function reduction material such as BaO, CaO, and Al.sub.2O.sub.3. The work function reduction material migrates through the pores of the porous cathode from a work replenishment surface adjacent to the cavity of the dispenser cathode support to an emitting cathode surface, thereby providing a dispenser cathode which has a uniform work function and therefore a uniform electron emission.
- Research Organization:
- Calabazas Creek Research, Inc. (San Mateo, CA)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- FG02-04ER83918
- Assignee:
- Calabazas Creek Research, Inc. (San Mateo, CA)
- Patent Number(s):
- 7,545,089
- Application Number:
- 11/085,425
- OSTI ID:
- 988403
- Country of Publication:
- United States
- Language:
- English
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