Patent ID: 6686595
Filing Date: 2004-02-03
Classification: H01J,H01L

Abstract:
An ion source comprising:an ionization chamber, said ionization chamber including a vapor entrance aperture for receiving gaseous feed material, an extraction aperture for emitting an ionized beam and one or more electron entrance apertures, wherein a line joining the centers of said electron entrance apertures is generally parallel to the plane of said extraction aperture; one or more electron beam sources positioned to generate one or more electron beams in a direction generally perpendicular to the plane of said extraction aperture; one or more beam steerers for bending said one or more electron beams so that said one or more electron beams travel in a direction generally parallel to the plane of said extraction aperture in said one or more electron entrance apertures; and an anode disposed adjacent each of said electron beam sources adapted to be connected to a voltage potential.