Ion source having fluid-cooled supply conductors

Details Ion source having fluid-cooled supply conductors Ion source having fluid-cooled supply conductors

1978-11-24

1980-11-25

Segal, Robert

Electric lamp and discharge devices

With temperature modifier

For filament or heated cathode

313230, H01J 6152, H01J 2726

Patent

active

042360978

ABSTRACT:
Two current supply conductors connected to an emissive filament located within a vacuum enclosure are each constituted by a leak-tight tube formed of material other than a heavy metal which traverses the enclosure wall through a leak-tight bushing, and by a conductor of electrically conductive heavy metal such as copper which is placed inside the leak-tight tube and completely isolated from the vacuum enclosure. This arrangement permits the continued use of heavy metals such as copper for current supply to ion sources without any attendant danger of heavy metal ion formation in the emitted beam.

REFERENCES:
patent: 2424002 (1947-07-01), Sloan

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