Patent ID: 8114246
Filing Date: 2012-02-14
Classification: C23F,G03F,H01J

Abstract:
1. A vacuum plasma processor for processing workpieces comprising a vacuum chamber having an inlet for supplying gas to the chamber; the chamber including an electrode arrangement, the electrode arrangement including a semiconductor member; the semiconductor member being selectively connected to an RF plasma excitation source for causing the semiconductor member to ionize gas in the chamber to a plasma, a coil outside the chamber for generating an electromagnetic field for ionizing gas in the chamber to a plasma, a non-magnetic metal arrangement interposed between the coil and the semiconductor member; the chamber, coil, non-magnetic metal arrangement and semiconductor member being positioned and arranged for preventing substantial electric field components of the electromagnetic field from being incident on the semiconductor member while enabling substantial electric and magnetic field components from the coil to be incident on the gas for ionizing the gas.