• Experimental study of a positive DC corona jet working with Ar/CO$_2$ gaseous mixture

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    • Keywords


      Direct current plasma jet; Ar/CO2 gas mixture; optical emission spectroscopy technique.

    • Abstract


      In this experimental work, the physical and electrical characteristics of a fabricated positive DC corona jet are analysed. The designed plasma jet operates with the direct current (DC) applied voltage and Ar/CO$_2$ mixture at the atmospheric pressure (760 Torr). The emitted spectra are analysed by the optical emission spectroscopy technique. Then, the rotational, vibrational and excitation temperatures, electron density and CO$_2$ dissociation degrees are obtained. Besides, using the actinometry method, the carbon dioxide dissociation process is studied.The CO$_2$ excitation and ionisation from $X^2\Pi_g \rightarrow A^2\Pi_u$ transitions along with the OH emission band from the $A^2\Sigma\rightarrow X^2\Pi$ transitions are detected. It is seen that at all the temperatures, electron number density and CO$_2$ dissociation to CO, O$_2$ and O species are increased at higher input electrical currents.

    • Author Affiliations



      1. Faculty of Physics, Shahid Bahonar University of Kerman, Kerman, Iran
      2. Laser Research Department, Institute of Science and High Technology and Environmental Science, Graduate University of Advanced Technology, Kerman, Iran
    • Dates

  • Pramana – Journal of Physics | News

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