Asian Journal of Physics Vol. 34, Nos 3 & 4 (2025) 151-158

Development and characterization of a microwave atmospheric pressure plasma jet

Suryasunil Rath and Satyananda Kar
Department of Energy Science and Engineering,
Indian Institute of Technology Delhi, Hauz Khas, New Delhi-110 016, India

Dedicated to Prof P K Kaw

Over the past decade, atmospheric pressure discharges in the microwave frequency range have gained significant attention due to their promising applications in material processing, CO2 dissociation, waste management, hydrogen production, and water treatment. This study presents the development and characterization of a waveguide-based microwave atmospheric pressure plasma jet (MW-APPJs), focusing on its design, diagnostics, and operational parameters. The setup incorporates a microwave power source, microwave waveguide networks, including the applicator section, and diagnostic tools for measuring plasma properties. Optical emission spectroscopy (OES) is employed to analyze the reactive species and determine plasma parameters which include electron excitation temperature (Texc) and electron number density (ne). The study highlights the influence of spatial and temporal gradients, gas flow rates, and power input on plasma behaviour. From OES, the dependence of Texc and ne with power increment were studied. The thermocouple variations are also plotted with power. © Anita Publications. All rights reserved.
Doi: 10.54955/AJP.34.3-4.2025.151-158
Keywords: Sunspot Number, Solar Radio Flux, Disturbance Storm Time, Space Weather Forecasting.

Peer Review Information
Method: Single- anonymous; Screened for Plagiarism? Yes
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References

  1. Tendero C, Tixier C, Tristant P, Desmaison J, Leprince P, Atmospheric pressure plasmas: A review, Spectrochim Acta, 61B(2006)2–30.
  2. Das S, Mohapatra S, Kar S, Bhatt S, Pundir S, Reactive species variation in cold atmospheric pressure plasma jet discharge under the influence of intrinsic parameters and its effect on E. coli inactivation, Biointerphases, 18 (2023)61003; doi.org/10.1116/6.0003042.
  3. Mallick A B, Prakash G V, Kar S, Narayanan R, Development of a pulse modulated sub-radio frequency power supply for atmospheric pressure plasma devices, Rev Sci Instrum, 94(2023)123508; doi.org/10.1063/5.0173873.
  4. Leins M, Kopecki J, Gaiser S, Schulz A, Walker M, Schumacher U, Stroth U, Hirth T, Microwave Plasmas at Atmospheric Pressure, Contrib Plasma Phys, 54(2014)14–26.
  5. Rana T, Kar S, Assessment of energy consumption and environmental safety measures in a plasma pyrolysis plant for eco-friendly waste treatment, J Energy Inst, 114(2024)101617; doi.org/10.1016/j.joei.2024.101617.
  6. Das S, Mohapatra S, Kar S, Physicochemical properties and antimicrobial efficacy of argon cold atmospheric pressure plasma jet activated liquids – a comparative study, Fundam Plasma Phys, 12(2024)10007; doi.org/10.1016/j.fpp.2024.100078.
  7. Radhika T P, Kar S, Effect of an additional floating electrode on radio frequency cross-field atmospheric pressure plasma jet, Sci Rep, 13(2023)10665; doi.org/10.1038/s41598-023-37805-7.
  8. Belmonte T, Cardoso R P, Noël C, Henrion G, Kosior F, Microwave plasmas at atmospheric pressure: Theoretical insight and applications in surface treatment, Eur Phys J Appl Phys, 42(2008)41–46.
  9. Das S, Prakash G V, Mohapatra S, Kar S, Bhatt S, Gautam H, Singh G, A. Kapil A, B.K. Das, Sood S, Xess I, Sarangi S C, Mallick S R, Antimicrobial Efficacy of Argon Cold Atmospheric Pressure Plasma Jet on Clinical Isolates of Multidrug-Resistant ESKAPE Bacteria, IEEE Trans Radiat Plasma Med Sci, 7(2023)421–428.
  10. Rath S, Kar S, Microwave atmospheric pressure plasma jet: A review, Contrib Plasma Phys, 55(2025)e202400036; doi.org/10.1002/ctpp.202400036.
  11. Mahreen A. Ganguli G V Prakash, Kar S, Sahu D, A 2D steady state analytical model for atmospheric pressure RF plasma jet, Phys Scr, 98(2023)105011; doi.org/10.1088/1402-4896/acf4cd.
  12. Zaplotnik R, Primc G, Vesel A, Optical emission spectroscopy as a diagnostic tool for characterization of atmospheric plasma jets, Appl Sci, 11(2021)1–22.
  13. Tatarova E, Dias F M, Felizardo E, Henriques J, Ferreira C M, Gordiets B, Microwave plasma torches driven by surface waves, Plasma Sources Sci Technol, 17(2008)24004; doi.org/10.1088/0963-0252/17/2/024004.
  14. Moisan M, Nowakowska H, Contribution of surface-wave (SW) sustained plasma columns to the modeling of RF and microwave discharges with new insight into some of their features. A survey of other types of SW discharges, Plasma Sources Sci Technol, 27(2018)73001; doi.org/10.1088/1361-6595/aac528.
  15. Kar S, Alberts L, Kousaka H, Microwave power coupling in a surface wave excited plasma, AIP Adv, 5(2015) 17104; doi.org/10.1063/1.4905713.
  16. Kar S, Kousaka H, Raja L L, Spatio-temporal behavior of microwave sheath-voltage combination plasma source, J Appl Phys, 117(2015)183302; doi.org/10.1063/1.4920993.
  17. Yanguas-Gil A, Focke K, Benedikt J, von Keudell A, Optical and electrical characterization of an atmospheric pressure microplasma jet for Ar∕CH4 and Ar/C2H2 mixtures, J Appl Phys, 101(2007)103307; doi.org/10.1063/1.2714646.
  18. Jia H, Fujiwara H, Kondo M, Kuraseko H, Optical emission spectroscopy of atmospheric pressure microwave plasmas, J Appl Phys, 104(2008)54908; doi.org/10.1063/1.2975345.
  19. Calzada M D, Moisan M, Gamero A, Sola A, Experimental investigation and characterization of the departure from local thermodynamic equilibrium along a surface-wave-sustained discharge at atmospheric pressure, J Appl Phys, 80(1996)46–55.
  20. Zhu X M, Pu Y K, Balcon N, Boswell R, Measurement of the electron density in atmospheric-pressure low-temperature argon discharges by line-ratio method of optical emission spectroscopy, J Phys D Appl Phys, 42 (2009) 142003; doi.org/10.1088/0022-3727/42/14/142003.
  21. Epstein R, Principles of Plasma Spectroscopy, by Griem H R, (Cambridge University Press), 1997, pp 366, J Plasma Phys, 60(1998)203–207.
  22. Radhika T P, Kar S, Glow-to-arc discharge transitions in a radio frequency atmospheric pressure plasma jet, Phys Fluids, 36(2024)84119; doi.org/10.1063/5.0218872.
  23. Sarani A, Nikiforov A Y, Leys C, Atmospheric pressure plasma jet in Ar and Ar/H2O mixtures: Optical emission spectroscopy and temperature measurements, Phys Plasmas, 17(2010)63504; doi.org/10.1063/1.3439685.

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