Preprint Article Version 1 This version is not peer-reviewed

Comparison of the Plasma Temperature and Electron Number Density of Pulsed Electrolyte Cathode Atmospheric Pressure Discharge and Direct Current Solution Cathode Glow Discharge

Version 1 : Received: 1 April 2018 / Approved: 3 April 2018 / Online: 3 April 2018 (03:58:35 CEST)

How to cite: Wang, J.; Li, S.; Zheng, P.; Chen, Y. Comparison of the Plasma Temperature and Electron Number Density of Pulsed Electrolyte Cathode Atmospheric Pressure Discharge and Direct Current Solution Cathode Glow Discharge. Preprints 2018, 2018040029 (doi: 10.20944/preprints201804.0029.v1). Wang, J.; Li, S.; Zheng, P.; Chen, Y. Comparison of the Plasma Temperature and Electron Number Density of Pulsed Electrolyte Cathode Atmospheric Pressure Discharge and Direct Current Solution Cathode Glow Discharge. Preprints 2018, 2018040029 (doi: 10.20944/preprints201804.0029.v1).

Abstract

A novel plasma source of pulsed electrolyte cathode atmospheric pressure discharge (pulsed-ECAD) driven by an alternating current (AC) power supply coupled with a high voltage diode was generated, and the discharge was generated in the open-to-air atmosphere between a metal electrode and a small-sized flowing liquid cathode. The spatial distribution of plasma temperatures (excitation, vibrational and rotational) of the pulsed-ECAD were investigated. The electron excitation temperature of H Texc(H), vibrational temperature of N2 Tvib(N2), and rotational temperature of OH Trot(OH) were measured as 4900±36-6800±108 K, 4600±86-5800±100 K and 1050±20-1140±10 K, respectively. Meanwhile, the temperature characteristics of dc solution cathode glow discharge (dc-SCGD) were also studied for comparison with pulsed-ECAD. The effects of operating parameters, including discharge voltage and discharge frequency, on the plasma temperatures were investigated. The electron number density determined in the discharge system and dc-SCGD were within the range (3.8–18.9) ×1014 cm-3 and 2.6×1014-17.2×1014 cm-3, respectively.

Subject Areas

pulsed electrolyte cathode atmospheric pressure discharge (pulsed-ECAD); plasma temperatures; temperature characteristics; electron number density

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