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Title: Sintered wire cathode

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.
Authors:
 [1] ;  [2]
  1. San Jose, CA
  2. Saratoga, CA
Publication Date:
OSTI Identifier:
988403
Report Number(s):
7,545,089
US patent application 11/085,425
DOE Contract Number:
FG02-04ER83918
Resource Type:
Patent
Research Org:
Calabazas Creek Research, Inc. (San Mateo, CA)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING