An international journal published by K. N. Toosi University of Technology

Document Type : Research Article


Radiation Application Department, Faculty of Nuclear Engineering, Shahid Beheshti University, Tehran, Iran


In this study , cold atmospheric pressure plasma jet used in treatment application was studied using COMSOL Multiphysics with the Finite Element Method . The device operates with argon gas at atmospheric pressure and by an alternating current power supply . Effective plasma parameters for treatment such as electron density and electron temperature and electrical potential have been investigated . Plasma parameters that affect treatment were determined by establishing a virtual laboratory before the experiment . The electron density value is suitable for therapeutic applications and The plasma temperature is less than the amount that the tissue is damaged . The gas inside the jet is argon and the flow rate is 5 slm . the pressure of the dielectric barrier discharge type of plasma jet is kept 1 atmosphere . The frequency of the electrodes is kept constant at 25 kHz and their Maximum voltage at 9 kV .


  • The modeling of the plasma jet is performed for a constant voltage and frequency of 4.5 kV and 25 kHz, respectively.
  • The jet device consists of two electrodes, a central pin electrode and a ring electrode, both made up of copper.
  • Plasma parameters of electron density distribution, temperature distribution, and electric potential were calculated.
  • The results showed that the electron density value was suitable for the therapeutic applications.


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