Patent ID: 9431217
Filing Date: 2016-08-30
CPC Classification: H01J,H05H

Claim Text:
1. A microwave plasma generating device, comprising: a plasma chamber having chamber walls; at least one microwave generating device for generating microwaves disposed outside of said plasma chamber; a microwave in-coupling device with which the microwaves are coupled into said plasma chamber, said microwave in-coupling device having an inner conductor leading into said plasma chamber through at least one of said chamber walls of said plasma chamber, an insulating tube enclosing said inner conductor and separating said inner conductor from an interior of said plasma chamber, and at least one outer conductor with at least one outer conductor end leading into said plasma chamber through at least one of said chamber wall, said at least one outer conductor being coaxial to said inner conductor but is not provided over an entire circumference of said inner conductor, said inner conductor and said at least one outer conductor form a microwave line and an outlet of microwaves out of the microwave line in said plasma chamber to generate microwave plasma in said interior of said plasma chamber; and at least one plasma electrode disposed in said interior of said plasma chamber and electrically insulated from said chamber walls and to which a DC, NF, or HF voltage can be applied, said at least one plasma electrode disposed coaxially to said inner conductor, wherein the microwave plasma is electronically contactable with said at least one plasma electrode so that a function of said at least one outer conductor is transferable at least partly to the microwave plasma, said at least one plasma electrode selected from the group consisting of: