Patent ID: 8691048

Claim:
A plasma processing apparatus, comprising: a processing chamber operable to process an object disposed within the processing chamber; a surrounding member disposed so as to surround the processing chamber, the surrounding member including a top surface sealing an opening on top of the processing chamber, a side surface, and a bottom surface that creates an inner space, the surrounding member including a dielectric member; an RF induction coil disposed outside the dielectric member, the RF induction coil being disposed above the top surface; an air-core coil for generating a direct-current magnetic field supplied to the inner space, the air-core coil being disposed outside the side surface; and an RF cut filter connected to a direct current (DC) power supply and connected to a first end and to a second end of the air-core coil, the RF cut filter including a first capacitor connected to a positive terminal of the DC power supply and to ground and a second capacitor connected to a negative terminal of the DC power supply and to ground.