Electrical characterization of argon and nitrogen based cold plasma jet

Abstract

In this paper, a dielectric barrier discharge plasma based atmospheric pressure plasma jet has been generated in a floating helix and floating end ring electrode configuration using mixture of argon and nitrogen gases (50:50 ratio). This configuration is subjected to a range of supply frequencies (10–25 kHz) and supply voltages (6.5–9.5 kV) at a fixed rate of gas flow rate (i.e., 1 l/min). The electrical characterization of the plasma jet has been carried out using a high voltage probe and current transformer. The current–voltage characteristics have been analyzed, and the power consumed by the device has been estimated at different applied combinations of supply frequency and voltages for optimum power consumption and maximum jet length. A comparative analysis of the results of the above experiments has shown that maximum power consumed by the device in helix electrode configuration with end ring is 19 W for (Ar+N2) mixture as compared to only 12 mW and 7.7 mW for Ar and He gas respectively (With end ring), this may be due to the main ionization mechanisms which are different depending on the working gas. Furthermore, maximum jet length of 42 mm has been obtained for He gas at 6 kV/25 kHz due to penning ionization process in comparison to jet lengths of only 32 mm for Ar gas and jet length of only 26 mm for Ar+N2 mixture. The obtained average power consumed and maximum jet length for mixture of (Ar+N2) gases are 6.5 W and 26 mm.

Predictive Modelling and Optimization of Double Ring Electrode Based Cold Plasma Using Artificial Neural Network

“…Amongst the various technologies implemented for generating atmospheric cold plasma, there are two major *Corresponding Author Email: divya.deepak@manipal.edu (G. D. Deepak) categories which are dominant in clinical and preclinical research in the field of plasma medicine which includes plasma jets (12)(13)(14)(15) and dielectric barrier discharge (DBD) (16,17). In DBD's the plasma is ignited in the gap between the powered and ground electrode.…”

The effect of mixed electric field on characteristic of Ar–N2 plasma jets for TiN surface treatment

“…For atmos pheric plasma jet, the sputtering is infinitesimal, and the sur face modification is mostly due to etching by reactive species like atomic oxygen, N 2 , and OH radicals [24][25][26]. Besides, reactive nitrogen and oxygen ions can result in surface etching and oxidation, respectively, and both could increase the sur face energy [22,27]. When the working gas is composed of a high content of reactive gas, the faster and better surface treat ment takes place; however, high power is required to keep the plasma jet running, which could deteriorate the surface and limit the performance of the plasma jet [2,3,6].…”

The effect of modulated electric field on characteristic of SDBD‐like plasma jet for surface modification

“…In the usual atmospheric plasma jet, the sputtering surface is very small that this area mostly affected by reactive species like atomic oxygen, N2, and OH radicals. [12][13][14] Moreover, the surface etching and oxidation can result from the reactive ions (nitrogen and oxygen), where both could increase the surface energy. [12,[15][16][17][18] Various research groups around the world have been working on a variety of plasma jet production structures.…”

“…In some of these investigations, in order to increase the plasma jet length, DBD-like plasma jets have been employed in new structures. [2,14,17,19] In these years, the mechanism of plasma jet that is propagated at the jet nozzle output has been considered in most APPJs researches. While the geometrical parameters of the jet's tube and electrical parameters such as pulse duty cycle, pulse shape, voltage amplitude, and pulse repetition frequency play a more significant role in the generation of plasma jets.…”

“…While the geometrical parameters of the jet's tube and electrical parameters such as pulse duty cycle, pulse shape, voltage amplitude, and pulse repetition frequency play a more significant role in the generation of plasma jets. [2,14,20] In order to fill this gap, in this paper, the increase of plasma cross-section in the collision with the surface is investigated using geometrical and electrical parameters. Therefore, the purpose of this paper is to investigate the jet plasma with longer radiation length and greater cross-sectional area, which are of particular importance in plasma applications, and to study the factors affecting these characteristics.…”