Electric lamp and discharge devices – With positive or negative ion acceleration – Supplying ionizable material
Patent
1984-11-20
1986-12-16
Niebling, John F.
Electric lamp and discharge devices
With positive or negative ion acceleration
Supplying ionizable material
204298, 3133631, 250423R, H01J 105
Patent
active
046299319
ABSTRACT:
A liquid metal ion source alloy for high vapor pressure metalloids, wherein the alloy composition is chosen to have a low melting point so that the vapor pressure of the volatile constituents is low, even in the liquid state. Specifically, the ion source alloy is an alloy selected from the group of (Pb.sub.0.7-1.0 Au.sub.0.3-0).sub.0.7-0.99 (As+Sb).sub.0.3-0.01 and Pb.sub.0.20-0.30 Au.sub.0.45-0.55 (As+Sb).sub.0.20-0.30. The melting points of these alloys are about 200.degree. C.-300.degree. C., and the alloys may be maintained molten in contact with the emission elements for long periods of time without significant loss of the volatile species or reactivity with typical substrate materials used for emission elements.
REFERENCES:
patent: 4088919 (1978-05-01), Clampitt et al.
patent: 4367429 (1983-01-01), Wang et al.
patent: 4426582 (1984-01-01), Orloff et al.
patent: 4488045 (1984-12-01), Anazawa et al.
Clark Jr. William M.
Johnson William L.
McKenna Charles M.
Denson-Low Wanda K.
Hughes Aircraft Company
Karambelas A. W.
Leader William T.
Niebling John F.
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