Electrical characterization of argon and nitrogen based cold plasma jet

2018 ◽  
Vol 83 (2) ◽  
pp. 20801 ◽  
Author(s):  
G. Divya Deepak ◽  
Narendra Kumar Joshi ◽  
Ram Prakash ◽  
Udit Pal
Keyword(s):  
Gas Flow ◽  
Average Power ◽  
Electrical Characterization ◽  
Plasma Jet ◽  
Current Transformer ◽  
Ring Electrode ◽  
Electrode Configuration ◽  
Fixed Rate ◽  
Jet Length

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.

scholarly journals Electrical characterization of atmospheric pressure dielectric barrier discharge-based cold plasma jet using ring electrode configuration

2016 ◽  
Vol 34 (4) ◽  
pp. 615-620 ◽  
Author(s):  
G. Divya Deepak ◽  
N.K. Joshi ◽  
U. Pal ◽  
R. Prakash
Keyword(s):  
Dielectric Barrier Discharge ◽  
Atmospheric Pressure ◽  
Cold Plasma ◽  
Barrier Discharge ◽  
Supply Voltage ◽  
Electrical Characterization ◽  
Plasma Jet ◽  
Ring Electrode ◽  
Dielectric Barrier

AbstractIn this study, an atmospheric pressure cold plasma jet has been generated based on dielectric barrier discharge plasma. The double ring electrode configuration is used and analysis has been performed subjected to wide range of supply frequencies up to 25 kHz and supply voltage up to 6 kV. The electrical characterization of the plasma jet has been carried out using a high voltage probe. The V-I characteristics of the developed cold plasma jet have been studied and the consumption of the power has been analyzed at various input combinations of supply frequency and applied voltage. Consequently, the supply voltage and supply frequency are optimized with respect to the discharge current and jet length for optimum power consumption. The peak power consumed for glow discharge operation has been found to be 1.27 W in the optimized configuration.

scholarly journals Electrical Characterization of an Atmospheric Pressure Plasma Jet

2019 ◽  
Vol 5 (1) ◽  
pp. 85-90
Author(s):  
S. K. KC ◽  
S. Sharma ◽  
R. Shrestha ◽  
D. P. Subedi
Keyword(s):  
Power Consumption ◽  
Capillary Tube ◽  
Electrical Characterization ◽  
Atmospheric Pressure Plasma ◽  
Plasma Jet ◽  
Voltage Divider ◽  
External Diameter ◽  
Electrical Characteristics ◽  
Lissajous Figures

In this work, a plasma jet has been generated with capillary tube having external diameter 4.0 mm and thickness 1.0 mm. Argon has been used as a working gas. The electrical characteristics of this device like instantaneous power, and discharge current have been measured. The effects of applied voltage on the dissipated power of the device have been investigated. The current is measured with the current probe whereas the voltage is measured from the locally fabricated voltage divider having ratio 1201:1. The electron density has been found out using power balance method. In addition, the power consumption during the discharge has also been studied with the help of Lissajous Figures. The calculated power consumption has been compared with other manual as well as I-V plots.

scholarly journals Effects of Gas Flow on Spectral Properties of Plasma Jet Induced by Microwave

2018 ◽  
Vol 15 (1) ◽  
pp. 81-86 ◽  
Author(s):  
Baghdad Science Journal
Keyword(s):  
Flow Rate ◽  
Applied Voltage ◽  
Gas Flow ◽  
Microwave Plasma ◽  
Plasma Jet ◽  
Gas Temperature ◽  
Gas Flow Rate ◽  
Argon Gas ◽  
Jet Length ◽  
Maximum Value

In this paper, a construction microwave induced plasma jet(MIPJ) system was used to produce a non-thermal plasma jet at atmospheric pressure, at standard frequency of 2.45 GHz and microwave power of 800 W. The working gas Argon (Ar) was supplied to flow through the torch with adjustable flow rate using flow meter regulator. The influence of the MIPJ parameters such as applied voltage and argon gas flow rate on macroscopic microwave plasma parameters were studied. The macroscopic parameters results show increasing of microwave plasma jet length with increasing of applied voltage, argon gas flow rate where the plasma jet length exceed 12 cm as maximum value. While the increasing of argon gas flow rate will cause increasing into the argon gas temperature, where argon gas temperature the exceed 350 ? as maximum value and study the effect of gas flow rate on the optical properties

Numerical study of atmospheric-pressure argon plasma jet propagating into ambient nitrogen

2021 ◽  
Author(s):  
Yuan yuan Jiang ◽  
Yanhui Wang ◽  
Yamin Hu ◽  
Jiao Zhang ◽  
Dezhen Wang
Keyword(s):  
Flow Velocity ◽  
Atmospheric Pressure ◽  
Propagation Velocity ◽  
Gas Flow ◽  
Argon Plasma ◽  
Plasma Jet ◽  
Propagation Length ◽  
Jet Length ◽  
Gas Flow Velocity ◽  
Argon Plasma Jet

Abstract In this paper, a two-dimensional fluid model is used to study the properties of atmospheric-pressure argon plasma jet propagating into ambient nitrogen driven by a pulsed voltage, emphasizing the influence of gas velocity on the dynamic characteristics of the jet. The simulation results show that the argon jet exhibits a cylindrical shape channel and with the increase of propagation length, the jet channel gradually shrinks. The jet propagation velocity varies with time. Inside the dielectric tube, the plasma jet accelerates propagation and reaches its maximum value near the nozzle. Exiting from the tube, the propagation velocity of the plasma jet quickly decreases and when approaching the metal plane, the decrease of jet velocity slows down. The increase of gas speed leads to the variation of the jet spatial distribution. The electron density presents a solid structure at lower gas flow speeds, whereas an annular structure can be observed under the higher gas flow velocity in the ionization head. The jet length increases with the gas flow velocity. However, when the flow velocity exceeds a critical value, the increased rate of the plasma jet length becomes slow. Additionally, the influence of the gas flow speed on the production and transport of the reactive species is also studied and discussed.

Investigation on Atmospheric Pressure Plasma Jet of DBD and its Application on Bacteria Inactivation

2015 ◽  
Vol 719-720 ◽  
pp. 221-230
Author(s):  
Tao Liang ◽  
Shi Ying Hou
Keyword(s):  
Atmospheric Pressure ◽  
Gas Flow ◽  
Atmospheric Pressure Plasma ◽  
Plasma Jet ◽  
Atmospheric Plasma ◽  
Flow Mode ◽  
Half Cycle ◽  
Multiple Pulse ◽  
Jet Length ◽  
Bacteria Inactivation

Two kinds of multiple-pulse were reported on atmospheric plasma jet (APPJ) of dielectric barrier discharge (DBD) configurations in this study. Meanwhile, the investigation on electrical characteristics of APPJ in helium and helium/air was carried out with the aim of shedding light on the electrode parameters for dissipated power and jet length. The typical bacteria, E. coil, were employed to study the effect by the two APPJ devices (PJ-1 and PJ-2). For PJ-1, multiple-pulse appears in both sides of every half-cycle, but only in the positive half-cycle for PJ-2. A wider power electrode of PJ-1 and further distance from the nozzle to grounding electrode of PJ-2, whether in ambient helium or helium/air, are all conducive to improvement of dissipated power. With the increase of gas flow rate, the jet length will become longer at laminar flow mode, then get shorter, and a permanent to the end. Generally, the introduction of air leads a better sterilization effect, especially for PJ-1. Keywords: Atmospheric Pressure, multiple-pulse, Electrode parameters, dissipated power, jet length, plasma jet. PACS: 52.80.-s, 52.77.-j

Characterization of the Expanded Plasma Jet Generated at Reduced Chamber Pressure

2014 ◽  
Vol 644-650 ◽  
pp. 4892-4895
Author(s):  
De Ming Yang ◽  
Bo Han Tian
Keyword(s):  
Gas Flow ◽  
Hydrogen Plasma ◽  
Plasma Jet ◽  
Columnar Structure ◽  
Chamber Pressure ◽  
Gas Flow Rate ◽  
Arc Power ◽  
Enthalpy Probe ◽  
Low Pressure Plasma Spraying

Very low pressure plasma spraying has been attracted attention due to special properties of the expanded plasma jet which may probably deposit specific and unique structure coatings, such as columnar structure coatings. The forming of the coatings is affected by plasma generating and working conditions. These operating parameters such as arc power, plasma gas flow rate, and chamber pressure have influences on pressure, enthalpy and temperature of plasma jet. In this work, an enthalpy probe is applied to measure the enthalpy of argon-hydrogen plasma jet generated at chamber pressure of 3000 Pa and 50Pa. The results showed that the temperature of plasma jet reached to 11000 K at 25 mm from nozzle exit, and then dropped slowly to 7000 K at 400 mm.

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