Patent ID: 6248250
Filing Date: 2001-06-19
Classification: H01J

Abstract:
A plasma reactor for processing a workpiece, comprising:a pedestal defining a workstation of a diameter d to support a workpiece of a similar diameter on said pedestal within the reactor;a chamber enclosure comprising:(a) a vertical side wall having a top, and(b) a ceiling having a base overlying said top of said side wall;an inductive coil overlying said ceiling and capable of being coupled to an RF power supply, wherein said inductive coil comprises plural windings including a bottom winding adjacent said ceiling base and a top winding overlying a radially inner portion of said ceiling; andsaid vertical side wall top being at a height h above said pedestal and said ceiling having an apex at a height H above said ceiling base, wherein H+h is in a range on the order of between about 4"" and 7"".