Charged particle gun

Details Charged particle gun Charged particle gun

2005-05-13

2010-12-21

Kim, Robert (Department: 2881)

Radiant energy

Ion generation

Field ionization type

C250S3960ML, C250S307000, C250S310000, C250S311000, C250S440110, C313S338000, C313S451000, C313S304000, C313S348000, C313S268000, C313S270000

Reexamination Certificate

active

07855373

ABSTRACT:
An electron gun (1) includes an emitter (2), a tubular support (3) and an adaptor (4) for receiving the emitter. The adaptor includes a tapered plugging surface (7) and the tubular support includes a correspondingly tapered seating surface (9) for receiving the plugging surface. The plugging surface and seating surface have conical profiles which help to position the adaptor concentrically with the support.

REFERENCES:
patent: 3128407 (1964-04-01), Mattson
patent: 3967150 (1976-06-01), Lien et al.
patent: 4082937 (1978-04-01), Istomin et al.
patent: 5117085 (1992-05-01), Fritz et al.
patent: 0 384 684 (1990-08-01), None
patent: 0 790 633 (1997-08-01), None
patent: 1 067 572 (2001-01-01), None
patent: 1067572 (2001-01-01), None
patent: 55-151738 (1980-11-01), None
patent: 9-17365 (1997-01-01), None

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