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Title: Sintered wire cesium dispenser photocathode

A photoelectric cathode has a work function lowering material such as cesium placed into an enclosure which couples a thermal energy from a heater to the work function lowering material. The enclosure directs the work function lowering material in vapor form through a low diffusion layer, through a free space layer, and through a uniform porosity layer, one side of which also forms a photoelectric cathode surface. The low diffusion layer may be formed from sintered powdered metal, such as tungsten, and the uniform porosity layer may be formed from wires which are sintered together to form pores between the wires which are continuous from the a back surface to a front surface which is also the photoelectric surface.
Authors:
; ;
Publication Date:
OSTI Identifier:
1126914
Report Number(s):
8,664,853
13/587,200
DOE Contract Number:
SC0006208
Resource Type:
Patent
Research Org:
Calabazas Creek Research, Inc., San Mateo, CA, USA
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING