Apparatus for generating an electron beam

Details Apparatus for generating an electron beam Apparatus for generating an electron beam

1997-09-17

1998-09-15

Nguyen, Kiet T.

Radiant energy

Ion generation

Field ionization type

H01J 3700

Patent

active

058083090

ABSTRACT:
The invention relates to apparatus for generating an electron beam with an ptical waveguide, a light source which is coupled on one end of the optical waveguide, a coating for generated electrons which is applied to the other end of the optical waveguide as well as field-generating means in order to lower the electron work function of the coating so far that a photoemission current can be generated. According to the invention a metal carbide is used as the coating.

REFERENCES:
patent: 4868380 (1989-09-01), Booman et al.
patent: 5041724 (1991-08-01), Feuerbaum et al.
patent: 5289004 (1994-02-01), Okada et al.

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