Metal ion source

Details Metal ion source Metal ion source

1982-08-27

1984-12-11

Anderson, Bruce C.

Radiant energy

Ion generation

Field ionization type

3133621, H01J 2702

Patent

active

044880456

ABSTRACT:
A reservoir containing a material to be ionized has in its bottom a capillary extending outwardly in symmetrical with the optical axis of an ion source, and has a needle extending coaxially through said capillary in said reservoir so that the apex end of the needle projects slightly beyond the exterior surface of the reservoir. Intensive electric field at the apex end of the needle is formed by an extracting electrode disposed in facing the needle. An electric current is supplied through conductive wires or filaments supporting the reservoir for heating the reservoir. As a result, the liquid material to be ionized in the reservoir seeps smoothly through the capillary of the reservoir toward the apex end of the needle for field evaporation and ionization.

REFERENCES:
patent: 3233404 (1966-02-01), Huber et al.
patent: 4088919 (1978-05-01), Clampitt et al.
patent: 4318029 (1982-03-01), Jergenson
patent: 4318030 (1982-03-01), Jergenson
patent: 4328667 (1982-05-01), Valentian et al.
patent: 4367429 (1983-01-01), Wang et al.

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