Patent ID: 8760054

Claim:
A plasma electron flood system, comprising: a microwave generation component configured to generate microwave radiation; a cavity configured to function as both a microwave cavity, substantially resonant at a frequency of the microwave radiation, and as a plasma chamber, wherein the cavity has one or more apertures that allow transmission of microwaves from the microwave generation component to the cavity, one or more extraction apertures in direct contact with an ion implantation system beam line, and an input for a gas; and a magnetic field generation component comprising one or more permanent magnets arranged in proximity to the cavity and configured to generate a magnetic field that decays rapidly over the cavity from a region of high magnetic field strength to a region of low magnetic field strength in the vicinity of the extraction apertures, wherein the one or more permanent magnets comprise a racetrack shape, which wraps around a perimeter of the cavity as a continuous shape, and that generates the magnetic field configured to form an Electron Cyclotron Resonance (ECR) heating zone extending along a length of the cavity; wherein the magnetic field results in an electron cyclotron frequency in a region of the cavity that is equal to or approximately equal to the microwave radiation frequency so that a plasma is generated to diffuse through the extraction apertures.