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Physical Insight into the Synergistic Enhancement of CAP Therapy Using Static Magnetic Field

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Abstract

In the last decades, to improve the CAP treatment efficiency, its biological effects in combination with other physical modalities have widely investigated. However, the physical insight into most of supposed synergistic effects remained elusive. In this regard, the synergetic effect of cold plasma and magnetic field has been used for different applications, especially due to considerable synergistic in biological media reactivity. In the present paper, using a 420 mT N42 magnet, the effect of the perpendicular external static magnetic field (SMF) on the cold atmospheric pressure plasma (CAP) characteristics, such as electron temperature and density, is investigated based on the optical emission spectroscopy, utilizing the Boltzmann plot method, Saha-Boltzmann equation, and Specair software simulation. Results showed that the rotational and electronic excitational temperatures experienced 100 K and 550 K increases in the presence of SMF, respectively. In contrast, the vibrational and translational temperatures remained constant. Moreover, electron temperature was estimated as 1.04 eV in the absence of SMF and increased up to 1.24 eV in the presence of SMF. In addition, the Saha-Boltzmann equation illustrated that the electron density increased in the presence of the additional SMF. The results of the present study indicated that the magnetic field could be an assistant to the cold plasma effect, beneficial in medical applications due to modifications in plasma temperature and electron density.

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Funding

This work was supported by Slovak Research and Development Agency APVV-22-0247 and Comenius University Grant UK/3032/2024.

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Authors and Affiliations

  1. Division of Environmental Physics, Faculty of Mathematics, Physics and Informatics, Comenius University, Mlynská Dolina, 84248, Bratislava, Slovakia

    Ramin Mehrabifard

  2. Department of Physics and Institute for Plasma Research, Kharazmi University, 49 Dr. Mofatteh Avenue, Tehran, Iran

    Ramin Mehrabifard, Kamal Hajisharifi & Hassan Mehdian

  3. Laser and Plasma Research Institute, Shahid Beheshti University, Evin, Tehran, Iran

    Zeinab Kabarkouhi

  4. Department of Physics, K. N., Toosi University of Technology, Shariati, Tehran, Iran

    Fatemeh Rezaei

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The authors confirm contribution to the paper as follows: study conception and design: Ramin Mehrabifard; data collection: Ramin Mehrabifard and Zeinab Kabarkouhi; analysis and interpretation of results: Zeinab Kabarkouhi and Ramin Mehrabifard; draft manuscript preparation: Fatemeh Rezaei, Kamal Hajisharifi, and Hassan Mehdian. All authors reviewed the results and approved the final version of the manuscript.

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Mehrabifard, R., Kabarkouhi, Z., Rezaei, F. et al. Physical Insight into the Synergistic Enhancement of CAP Therapy Using Static Magnetic Field. Braz J Phys 54, 122 (2024). https://doi.org/10.1007/s13538-024-01501-2

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