Patent ID: 7633231

Claim:
A device for producing a multi-frequency cold plasma comprising: a housing having an interior space; an electrode comprising a plurality of plates positioned in substantially parallel, spaced-apart fashion within the inner space, a surface area of an upstream plate greater than a surface area of a downstream plate; a support rod in signal communication with a source of radio frequency energy, the rod extending through each of the electrode plates and supporting a distance therebetween; means for introducing helium gas into the inner space upstream of the plates; a first toroidal magnet having a first alignment positioned within the inner space downstream of the plates; a second toroidal magnet having a second alignment opposite the first alignment positioned within the inner space downstream of the first magnet, the first and the second magnets substantially parallel and coaxial and each having a central orifice; and a support plate positioned between the first and the second magnet, the support plate having an aperture therethrough; an induction grid in frequency harmony with the electrode and affixed to the support plate, the grid comprising: a central capacitance element placeable in electrical communication with a source of power; and a plurality of metal rods, each having an outer capacitance element affixed at opposed ends, the rods approximately symmetrically arrayed about the central capacitance element, an outermost metal rod placeable in electrical communication with the power source; wherein gas entering the inner space is energized by the electrode, is channeled through the first magnet orifice, and contacts the grid through the support plate aperture to further energize the gas and create a cold plasma thereby, the multiple-frequency cold plasma channeled out of the housing through the second magnet orifice in fluid communication with an orifice adjacent a downstream end of the housing.