Patent ID: 8454810
Filing Date: 2013-06-04
Classification: C23C,H01J

Abstract:
1. A hollow cathode magnetron, comprising: a first hexagonal hollow cathode, the cathode including six targets arranged in a hexagonal shape and one or more magnets associated with each of the six targets to generate and maintain a high density plasma; a second hexagonal hollow cathode including six targets arranged in a hexagonal shape located concentric to the first hexagonal hollow cathode and one or more magnets associated with each of the six targets; and an anode located beneath the cathode, wherein, each target having one or more magnets with a single radially oriented polarity with respect to the first and second concentric hexagonal hollow cathodes; magnets associated with adjacent targets having opposite magnetic polarity; the magnetic field lines of the first and second hexagonal hollow cathode couple to each other; magnetic field lines are used to generate plasma from the injected inert gas; and plasma ions impact the six targets of each hexagonal hollow cathode, thereby enhancing the erosion profile of the six targets.