Ion beam source

Details Ion beam source Ion beam source

1982-01-28

1984-08-21

Moore, David K.

Electric lamp and discharge devices

Electrode and shield structures

Point source cathodes

313630, H01J 116, H01J 1910

Patent

active

044672403

ABSTRACT:
An ion beam source characterized in that a needle-like tip is comprised of a carbide, a nitride, or a diboride of at least one element selected from the group consisting of Ti, Zr, Hf, V, Nb and Ta, a hexaboride of at least one element of rare earth metal elements of atomic numbers 57-70, or carbon. Stable ion beam emission of high brightness and long life can be obtained by using the needle-like tip of the said material.

REFERENCES:
patent: 3775630 (1973-11-01), Minamikawa et al.
patent: 4055780 (1977-10-01), Kawai et al.
patent: 4143292 (1979-03-01), Hosoki et al.
patent: 4193013 (1980-03-01), Futamoto et al.
patent: 4346325 (1982-08-01), Nakasuji et al.

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