Patent ID: 8810134

Claim:
A device for producing a cold plasma comprising: a housing having an inner space; an electrode positioned within the inner space and configured to be in electrical communication with a radio frequency (RF) power source; an input port configured to introduce helium gas into the inner space upstream of the electrode; an orifice adjacent to a downstream end of the housing, and configured to permit the multiple-frequency cold plasma to exit the housing; a first magnet positioned within the inner space downstream of the electrode; a second magnet positioned within the inner space downstream of the first magnet; and a grid positioned between the first and second magnets, the grid comprising: a central capacitance element configured to be in electrical communication with a power source; and a plurality of conductors, each of the plurality of conductors having an outer capacitance element affixed at opposed ends, the plurality of conductors arrayed about the central capacitance element, and an outermost conductor of the plurality of conductors configured to be in electrical communication with the power source.