[Experiment on optical radiation characteristic of low temperature plasma at atmospheric pressure]

The experiment on the optical radiation performance of a low temperature plasma due to atmospheric pressure glow discharge (APGD) in air was carried out in the present paper. A set of APGD devices were created successfully and a thin layer of plasma can be produced on the planar surface of designed electrode plate. The measurement was carried out on the optical radiation characteristic of the plasma with a grating spectrograph system. The investigation was made to several different electrode plates. The radiation spectra of several electrode plates with different power loaded were acquired. The data obtained show that the APGD optical radiation intensity grows linearly with the applied power, and increases with the static capacitance of the electrode plate. The study proves that it is feasible to control APGD plasma quantitatively and effectively by using the obtained relationship.