Characterization of argon/air atmospheric pressure capacitively coupled radio frequency dielectric barrier discharge regarding parasitic capacitor at 13.56 MHz
الموضوعات : Journal of Theoretical and Applied Physics
Farshad Sohbatzadeh
1
(Department of Atomic and Molecular Physics, Science Faculty, University of Mazandaran)
Saeed Mirzanejhad
2
(Department of Atomic and Molecular Physics, Science Faculty, University of Mazandaran)
Hoda Mahdavi
3
(Department of Atomic and Molecular Physics, Science Faculty, University of Mazandaran)
Zahra Omidi
4
(Department of Atomic and Molecular Physics, Science Faculty, University of Mazandaran)
الکلمات المفتاحية: Dielectric Barrier Discharge, Boltzmann Plot, High Input Power, Parasitic Capacitor, Discharge Resistance,
ملخص المقالة :
AbstractIn this paper, uniform argon glow discharge at atmospheric pressure in a diffuse mode driven by a 300-W radio-frequency (13.56 MHz) power supply based on dielectric barrier discharge was investigated. In this work, the effect of the parasitic capacitor on the electrical characteristics of the capacitively coupled atmospheric pressure plasma was investigated. It was revealed that more than half of the RF current is parasitic in our system as a characteristic of the capacitively coupled plasma. It was also proved that the discharge resistance and sheath capacitance increase at higher input powers while the impedance decreases. In order to recognize plasma, optical emission spectroscopy apparatus was used. Argon, oxygen, copper, and nitrogen spectrum lines were diagnosed. The plasma gas temperature and electronic excitation temperature were investigated showing a non-equilibrium discharge.
