Electron emission device provided with a reservoir containing ma

Details Electron emission device provided with a reservoir containing ma Electron emission device provided with a reservoir containing ma

1986-06-18

1988-04-05

Moore, David K.

Electric lamp and discharge devices

With frangible capsule containing getter, gas or vapor...

313346R, H01J 113, H01J 502

Patent

active

047361352

ABSTRACT:
In order to improve the stability of a cold cathode (5) of the reverse biased junction type, a vacuum space (2) is coupled with a reservoir (10), within which a source (21) of material reducing the work function, for example caesium, is present. By influencing the vapor pressure and the temperature in component parts (13, 16) of the reservoir (10) and in the source (21), loss of caesium due to adsorption or other phenomena occurring at the emitting surface (8) of the cathode (5) can be compensated for by an incident flow of caesium (25).

REFERENCES:
patent: 3913999 (1975-10-01), Clarke

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