High-pressure gas discharge lamp and electron emissive electrode

Details High-pressure gas discharge lamp and electron emissive electrode High-pressure gas discharge lamp and electron emissive electrode

1976-06-17

1977-10-04

Demeo, Palmer C.

Electric lamp and discharge devices

With magnetic device

Field transverse to discharge

313213, 313218, 313229, 313346R, 29 2514, H01J 114, H01J 61073, H01J 6120

Patent

active

040526348

ABSTRACT:
A high-pressure gas discharge lamp having an electrode consisting of a support of a high-melting metal provided with an electron emissive material. The emissive material consists mainly of one or more oxidic compounds containing (a) at least one of the rare earth metal oxides, (b) alkaline earth metal oxide in a quantity of 0.66 to 4 mole per mole of rare earth oxide and (c) at least one of the oxides of tungsten and molybdenum in a quantity of 0.25 to 0.40 mole per mole of alkaline earth metal oxide, the alkaline earth metal oxide consisting of at least 25 mol.% of barium oxide.

REFERENCES:
patent: 3708710 (1973-01-01), Smyser et al.
patent: 3919581 (1975-11-01), Datta
patent: 3988629 (1976-10-01), White et al.

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