Ion evaporation source for tin

Details Ion evaporation source for tin Ion evaporation source for tin

1989-05-16

1991-04-09

Berman, Jack I.

Radiant energy

Ion generation

Field ionization type

313230, 313232, 3133621, 31511181, 250424, H01J 2726

Patent

active

050067150

ABSTRACT:
An ion evaporation source for tin ions is prepared by coating a source element with a wettability enhancing gallium coating, and then loading the source with tin. The tin may be the naturally occurring tin, but can be an enriched tin containing a higher concentration of Sn.sup.120. The source produces a beam having a high fraction of Sn.sup.+ and Sn.sup.++ ions, and a small amount of the ionized wettability coating material. All but the desired ions are readily separated from the beam.

REFERENCES:
patent: 3150901 (1964-09-01), Esten et al.
patent: 4318029 (1982-03-01), Jergenson
patent: 4686414 (1987-08-01), McKenna et al.
Binary Alloy Phase Diagrams, vol. 2, 1985, p. 1165.

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