Patent ID: 7265360
Filing Date: 2007-09-04
Classification: H01J

Abstract:
1. An electromagnetic radiation source, comprising: an anode comprising: a first conductor; a second conductor positioned relative to the first conductor; a plurality of inter-digitated pole pieces, wherein adjacent pole pieces of the plurality of inter-digitated pole pieces are separated by a gap and are coupled to different ones of the first conductor and the second conductor; at least one mechanical phase reversal positioned along the first conductor or the second conductor, the mechanical phase reversal operable to force a polarity change on at least one pole piece adjacent to the mechanical phase reversal; a cathode separated from the anode by an anode-cathode space; electrical contacts for applying a dc voltage between the anode and the cathode and establishing an electric field across the anode-cathode space; and at least one magnet arranged to provide a dc magnetic field within the anode-cathode space generally normal to the electric field.