Patent ID: 8471476
Filing Date: 2013-06-25
Classification: H01J

Abstract:
1. A plasma flood gun for use in an ion implantation system, the plasma flood gun comprising: a plasma chamber having an exit aperture; a gas source capable of supplying a gaseous substance to the plasma chamber; a single-turn radio-frequency (RF) coil disposed within the plasma chamber, wherein a bent portion of the RF coil is located outside the plasma chamber; a power source coupled to the RF coil for inductively coupling radio frequency electrical power into the plasma chamber via the RF coil to excite the gaseous substance to generate a plasma; and a pair of magnets aligned with, and disposed on opposite sides of, the exit aperture, the pair of magnets each having the same pole configuration, wherein the exit aperture has a width sufficient to allow charged particles of the plasma to flow therethrough.