Patent ID: 8232729
Filing Date: 2012-07-31
Classification: H05H

Abstract:
1. A plasma producing apparatus that produces plasma from medium gas, comprising: a gas supply tube made of a dielectric material that supplies the medium gas so as to generate a medium gas stream having an elongated shape, a single high-potential electrode that is provided outside of the gas supply tube so as to form an electric field in the medium gas; and a voltage applying element that applies a voltage to the high-potential electrode, wherein the voltage is set to be in a range with which partial discharge based on dielectric barrier discharge occurs from the high-potential electrode toward both an upstream side and a downstream side in the medium gas stream, due to the electric field that is formed between the high-potential electrode and a ground potential present around the high-potential electrode through the dielectric material of the gas supply tube, and the partial discharge causes the plasma to be produced in the medium gas stream.