Patent ID: 8048329
Filing Date: 2011-11-01
Classification: H01J,H05H

Abstract:
1. A method for minimizing microwave leakage into a processing chamber of a microwave plasma system, wherein said microwave plasma system is configured for generating plasma and channeling at least a portion of said plasma downstream to said processing chamber, comprising: providing a plasma tube assembly, wherein said plasma tube assembly is a cylindrical structure positioned upstream from said processing chamber, said plasma tube assembly including a plasma-sustaining region, wherein said plasma is formed when a gas mixture interacts with microwave power within said plasma-sustaining region; and securing a first set of plasma traps to said plasma tube assembly, said first set of plasma traps being a first set of electrically conductive disks surrounding said cylindrical structure, wherein said first set of plasma traps being positioned upstream from said processing chamber and said first set of plasma traps including at least