Patent ID: 6974950
Filing Date: 2005-12-13
Classification: G21K,H01J,H05H

Abstract:
1. Apparatus for producing a neutral beam, comprising: a positive ion source for producing positive ions; a negative ion source for producing negative ions of the same species as the positive ions; said positive ion source having an extraction system means for producing a positive ion beam and said negative ion source having an extraction system means for producing a negative ion beam having substantially the same energy and speed as the positive ion beam, and said positive ion source with extraction system means disposed with respect to said negative ion source with extraction system means for producing nonparallel positive and negative ion beams; a bending magnet disposed to provide a magnetic field region into which the nonparallel beams of positive and negative ions pass; wherein the positive and negative ion sources with extraction system means are symmetrically positioned with respect to the bending magnet so that the positive and negative ion beams merge together to form a neutral beam.