Patent ID: 8328982
Filing Date: 2012-12-11
Classification: C23F,H01J,H05H

Abstract:
1. A plasma device comprising: a first electrode having an inlet for a gas; and a second electrode having a single outlet for the gas and disposed proximate to the first electrode to form a substantially uniform gap between surfaces of the first and the second electrode surfaces such that the gas flows into the gap from a plurality of different directions to converge and flow through the single outlet; wherein high frequency electrical power is applied between the first electrode and the second electrode to generate a plasma within the converging gas flow in the gap to emerge at the single outlet at atmospheric pressure and the first electrode comprises a hemispherical shape having a diameter substantially between 0.5 and 5.0 cm and the second electrode is shaped such that the substantially uniform gap is formed with a hemispherical surface of the hemispherical shape of the first electrode and the single outlet is disposed proximate to a center of the second electrode.