Negative ion source with low temperature transverse divergence o

Details Negative ion source with low temperature transverse divergence o Negative ion source with low temperature transverse divergence o

1985-03-04

1986-07-22

Anderson, Bruce C.

Radiant energy

Ion generation

Field ionization type

376129, 3133621, 3133631, 31511181, H01J 2702

Patent

active

046021612

ABSTRACT:
A negative ion source is provided which has extremely low transverse divergence as a result of a unique ion focusing system in which the focal line of an ion beam emanating from an elongated, concave converter surface is outside of the ion exit slit of the source and the path of the exiting ions. The beam source operates with a minimum ion temperature which makes possible a sharply focused (extremely low transverse divergence) ribbon like negative ion beam.

REFERENCES:
patent: 4298798 (1981-11-01), Huffman
patent: 4531077 (1985-07-01), Dagenhart
Leung et al, "Self-Extraction Negative Ion Source", Review of Scientific Instruments, vol. 53, No. 6, Jun. 1982, pp. 803-809.

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