Patent ID: 6109208
Filing Date: 2000-08-29
Classification: H01J

Abstract:
A plasma generating apparatus for generating plasma in a prescribed region including a plasma processing region, comprising:a vacuum vessel having said plasma processing region therein and equipped with a vacuum evacuation means;a discharge gas supplying means for supplying a discharge gas into said vacuum vessel;a microwave emitting means for emitting microwaves into said vacuum vessel;a microwave introducing means for introducing microwaves emitted by said microwave emitting means into said vacuum vessel; anda magnetic field generating means for generating a magnetic field in said vacuum vessel;wherein said microwave introducing means includes a plurality of tube-shaped or rod-shaped dielectric members arranged in parallel and inserted into said vacuum vessel; andsaid magnetic field generating means includes a means for generating a magnetic field strong enough for creating an electron cyclotron resonance region with microwaves having a prescribed frequency in the vicinity of an inner wall of said vacuum vessel and a means for generating a magnetic field of less than or equal to 100 G in the region where said plurality of tube-shaped or rod-shaped dielectric members of said microwave introducing means are located.