Patent ID: 7038389

Claim:
A plasma source, comprising: a process chamber; a cylindrical discharge cavity comprising a cathode disposed therein; a magnetron sputter cold cathode electron source disposed within said discharge cavity; a spool anode, axis symmetric with said cavity, comprising a first end formed to include a first aperture, a second end formed to include a second aperture, and a conduit nozzle extending through said spool interconnecting said first aperture and said second aperture, wherein said first end of said spool is adjacent to the top portion of said discharge cavity; and wherein said nozzle interconnects said discharge cavity and said process chamber; an electromagnet wound around said spool, wherein said electromagnet generates a magnetic field disposed within said process chamber, said discharge cavity, and said nozzle; a power supply interconnected between said cathode and said spool anode wherein electrons emanating from said magnetron sputter cathode electron source are impeded from reaching said anode by said magnetic field.