A plasma chamber apparatus and method having a process kit capable of reducing or eliminating electrical arcing from exposed metal at the perimeter of a workpiece. The plasma chamber includes a cathode electrode adjacent the workpiece. A process kit encircles the perimeter of the workpiece. The process kit includes a dielectric shield and an electrically conductive collar that overlies the dielectric shield. The resistivity of the conductive collar is 0.1 ohm-cm or less.
展开▼
