Patent ID: 6163006
Filing Date: 2000-12-19
Classification: H01J

Abstract:
A plasma processing device, comprising:an evacuable chamber including a window:a waveguide transmitting microwave energy from a source through the window into the evacuable chamber;a workpiece support within the evacuable chamber,a magnetic field source including a magnet and a pole piece including:a base adjacent to a first pole of the magnet; andsidewalls extending around the magnet from the base in a direction substantially parallel to an axis of polarity of the magnet, wherein the sidewalls have a length greater than a length of the magnet, wherein the magnet and the pole piece are configured to change the position or shape of a resonance zone; andrecurve sections extending from the sidewalls from an end opposite the base in a direction substantially perpendicular to the axis of polarity of the magnet.