Patent ID: 9655223
Date: 2017-05-16
CPC Classifications: H01J,H05H

Claim:
1. A plasma source for processing or imaging a substrate, secondary ion mass spectrometry, ion source for proton therapy, ion thrusters, and high energy particle accelerators comprising: a reactor chamber within which a plasma is generated to produce at least one plasma product for processing or imaging the substrate, ion source for proton therapy, ion thrusters, and high energy particle accelerators, the reactor chamber including outer walls that are actively biased to a high voltage; a gas source coupled to the reactor chamber to provide gas into the reaction chamber; an exit aperture coupled to the reactor chamber to allow extraction of ions from the reactor chamber; and a magnetic circuit comprising a source of magnetic flux that is electrically isolated from the reactor chamber and located at ground potential, and a high permeability magnetic circuit formed of magnetic permeability material in physical contact with the reactor chamber and located adjacent the reactor chamber exit aperture, with said magnetic circuit configured to produce a transverse DC magnetic field adjacent the exit aperture of the reactor chamber and channel magnetic flux through a high voltage gap to provide magnetic flux into the reactor chamber, with one portion of the circuit containing a high magnetic permeability material, the one portion being biased to high voltage and electrically isolated from another portion of the magnetic circuit by a dielectric fluid.