Method and apparatus for generating ions

Details Method and apparatus for generating ions Method and apparatus for generating ions

1997-02-12

1998-07-14

Nguyen, Kiet T.

Radiant energy

Irradiation of objects or material

Ion or electron beam irradiation

250423R, H01J 2700

Patent

active

057808627

ABSTRACT:
A surface ion source apparatus (10) creates a high purity ion beam (44) of molecules of metal compounds having a lower ionization energy than the metal they contain. Low energy dispersion in the ion beam and currents on the order of one ampere are attainable over long duration operation. Rhenium screen (12) is used in the ion source and related catalyzer (31). Temperatures vary in the range of 700 to 2500 degrees centigrade and a preferred vacuum pressure of 10.sup.-5 torr, or lower, is used. Wear and corrosion resistance of a wide variety of materials is greatly enhanced through ion deposition and/or implantation with the disclosed apparatus and methods. This high output ion source is also useful for electronic propulsion, separation of isotopes and production of electricity by forcing ions through a transverse magnetic field, such as used with a magnetohydrodynamic generator.

REFERENCES:
patent: 3864575 (1975-02-01), Hashmi et al.
patent: 5420437 (1995-05-01), Siess

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