Vapor discharge device with electron emissive material

Details Vapor discharge device with electron emissive material Vapor discharge device with electron emissive material

1990-12-14

1992-05-05

DeMeo, Palmer C.

Electric lamp and discharge devices

With gas or vapor

Having electrode of alkali, alkaline or rare earth material

313628, 252521, H01J 51073

Patent

active

051111080

ABSTRACT:
An emissive material for use in a vapor discharge device including reacted Ba.sub.x Sr.sub.1-x Y.sub.2 O.sub.4 wherein X satisfies the following: 1>X.gtoreq.0. A vapor discharge device is provided having an arc tube which includes electrodes therein coated with such emissive material.

REFERENCES:
patent: 3708710 (1973-01-01), Smyser et al.
patent: 3919581 (1975-11-01), Datta
patent: 4044276 (1977-08-01), Keeffee et al.
patent: 4052634 (1977-10-01), Dekok
patent: 4152619 (1979-05-01), Bhalla
patent: 4210840 (1980-07-01), Bhalla
patent: 4620128 (1986-10-01), Luthra
patent: 4806829 (1989-02-01), Nakao

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