High pressure gas discharge lamp including a hydrogen getter

Details High pressure gas discharge lamp including a hydrogen getter High pressure gas discharge lamp including a hydrogen getter

1974-11-01

1976-04-27

Demeo, Palmer C.

Electric lamp and discharge devices

Liquid electrode discharge devices

Auxiliary starting or holding electrode

313178, 313184, 417 48, F04B 3702, H01J 6126

Patent

active

039537552

ABSTRACT:
A high-pressure gas discharge lamp having a discharge vessel provided with an aggressive gas filling, and electrodes between which the discharge takes place during operation. A hydrogen getter is placed within the discharge vessel and it consists of a getter material surrounded by a hydrogen-permeable wall. The getter material comprises at least a material of the group yttrium, lanthanum, the lanthanides and alloys of the said elements. The hydrogen permeable wall comprises at least one of the elements chromium, molybdenum, tungsten, tantalum, nickel and iron.

REFERENCES:
patent: 3331988 (1967-07-01), Lafferty
patent: 3558963 (1971-01-01), Hanneman et al.
patent: 3805105 (1974-04-01), Gungle

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