High-pressure sodium vapor lamp and ternary amalgam therefor

Details High-pressure sodium vapor lamp and ternary amalgam therefor High-pressure sodium vapor lamp and ternary amalgam therefor

1985-04-23

1987-01-27

Tokar, Michael J.

Electric lamp and discharge devices

With gas or vapor

With particular gas or vapor

420526, H01J 6120

Patent

active

046396390

ABSTRACT:
A high pressure sodium vapor lamp for operation at a sodium vapor pressure of at least 60 Torr and in which the start-up interval of variation of lamp operating voltage is reduced by charging the lamp with a ternary amalgam of mercury, sodium and a third metal selected from the group consisting of indium, gallium and tin. The atomic proportion of the third metal exceeds that of the mercury but does not exceed that of the sodium in the amalgam, and the atomic proportion of sodium is at least twice but not over four times that of the mercury.

REFERENCES:
patent: 3384798 (1968-05-01), Schmidt
patent: 4298813 (1981-11-01), Johnson
patent: 4386050 (1983-05-01), Anderson
patent: 4422011 (1983-12-01), Bruninx-Poesen et al.

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