Patent ID: 8698400
Filing Date: 2014-04-15
Classification: H01J

Abstract:
1. A method for generating a neutral plasma beam that is extracted from a plasma generated in response to electric and magnetic fields, the method comprising: applying a radiofrequency voltage to an extraction electrode to generate electric and magnetic fields and extracting the plasma beam from the plasma generated by the electric and magnetic fields, the extraction electrode formed as a grid having a plurality of openings such that the plasma beam passes therethrough; disposing an RF electrode device including an excitation electrode having an excitation area; arranging a plasma space between the extraction electrode and the excitation area such that over time the plasma is at a higher electrical potential with respect to the extraction electrode to accelerate positive plasma ions, the plasma and the extracted plasma beam are influenced by a magnetic field; arranging a planar magnetron on a side facing away from the plasma and behind the excitation electrode such that the excitation electrode surrounds the magnetron; directing a magnetic north pole and a magnetic south pole of said planar magnetron into the interior of the plasma space; and generating the magnetic field via the planar magnetron such that a curved magnetic field projecting into the interior of the plasma space is formed, the curved magnetic field influencing the plasma and the extracted plasma beam.