Device for generating negative-ion beams by alkaline metal ion s

Details Device for generating negative-ion beams by alkaline metal ion s Device for generating negative-ion beams by alkaline metal ion s

1983-03-23

1986-01-07

Moore, David K.

Electric lamp and discharge devices

With positive or negative ion acceleration

Supplying ionizable material

3133591, 3133631, 250423R, H01J 2722, H01J 4914, H05H 124

Patent

active

045636109

ABSTRACT:
A negative-ion source comprising means for discharging alkaline metal for discharging neutral alkaline metal particles together with alkaline metal ion particles; an electrode for generating negative ions which can serve as an extraction electrode for extracting said alkaline metal ion particles and a target bombarded with said alkaline metal ion particles and which provides with a hold for holding negative-ion seed material in the portion bombarded with said alkaline metal ion particles and an aperture for letting out negative-ion particles; and a negative-ion extraction electrode for said negative-ion particles. The present negative-ion source has an improved ion current efficiency and is compact size.

REFERENCES:
patent: 3233404 (1966-02-01), Huber et al.
patent: 3849656 (1974-11-01), Wallington

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