Investigation of Triplet Atmospheric Cold Plasma Jet for Decontamination Applications

In this paper, investigation of triplet atmospheric plasma jet using argon and oxygen gases is reported. Longitudinal geometrical configuration for the electrodes is chosen in which increases the jet length. Electrical characteristics, jet length dependent to voltage and gas flow rate, chemical reactive species such as ozone, atomic oxygen, NOx compounds and hydroxyl concentrations are measured. It is seen that the growth rate of the ozone concentration with triplet plasma jet is more than single plasma jet. Such increments hold for atomic oxygen concentration, too. It was found that the breakdown voltage of triplet plasma jet was about 2KV. Optical emission spectroscopy is used to identify and measure the plasma species at the effluent of the nozzle. The device could be used for surface and liquid decontamination to disinfect bacteria and hazardous chemical compounds.