Dispenser cathode

Details Dispenser cathode Dispenser cathode

1980-07-03

1982-09-21

Chatmon, Jr., Saxfield

Electric lamp and discharge devices

Electrode and shield structures

Cathodes containing and/or coated with electron emissive...

252521, 313337, H01J 114, H01J 1906, H01K 104

Patent

active

043509207

ABSTRACT:
A compressed dispenser cathode having 1-15% by weight of Ba.sub.2 Sc.sub.2 O.sub.5 in a porous metal cathode body has an emission having a larger current density (exceeding 6 A/cm.sup.2) and a longer life (more than 3000 hours).

REFERENCES:
patent: 3358178 (1967-12-01), Figner et al.
patent: 3719856 (1973-03-01), Koppius
patent: 3922428 (1975-11-01), Cronin
patent: 4007393 (1977-02-01), Van Stratum et al.

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