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@article{2409576,
author = {Polášková, Kateřina and Drexler, Petr and Klíma, Miloš and Macháč, Jan and Nečas, David and Švanda, Milan and Zajíčková, Lenka},
article_number = {5},
doi = {http://dx.doi.org/10.1088/1361-6595/ad48b5},
keywords = {radio frequency plasma jet; atmospheric pressure; electrical parameters; electromagnetic field; higher harmonics},
language = {eng},
issn = {0963-0252},
journal = {Plasma Sources Science and Technology},
title = {Electric field and higher harmonics of RF plasma slit jet measured by antennas and VI probes},
url = {https://iopscience.iop.org/article/10.1088/1361-6595/ad48b5},
volume = {33},
year = {2024}
}
TY - JOUR
ID - 2409576
AU - Polášková, Kateřina - Drexler, Petr - Klíma, Miloš - Macháč, Jan - Nečas, David - Švanda, Milan - Zajíčková, Lenka
PY - 2024
TI - Electric field and higher harmonics of RF plasma slit jet measured by antennas and VI probes
JF - Plasma Sources Science and Technology
VL - 33
IS - 5
SP - 1-16
EP - 1-16
PB - IOP Publishing Ltd
SN - 09630252
KW - radio frequency plasma jet
KW - atmospheric pressure
KW - electrical parameters
KW - electromagnetic field
KW - higher harmonics
UR - https://iopscience.iop.org/article/10.1088/1361-6595/ad48b5
N2 - The cold atmospheric plasma jets change their character when interacting with the different surfaces. Since such interaction is the primary area of plasma jet applications, it is essential to monitor the process. The non-linearity of the RF plasma slit jet (PSJ) was analyzed using the VI probes and a novel method, the non-intrusive antenna measurements. Regardless of the experimental setup and gas mixture (Ar, Ar/O2, Ar/N2), the PSJ frequency spectrum consisted of the following main features: dominant fundamental frequency peak, relatively strong odd harmonics, and significantly weaker even harmonics. The lowest degree of non-linearity was recorded for the Ar PSJ ignited against a grounded target. Admixing a molecular gas increased the discharge non-linearity. It was attributed to the enhancement of secondary electron emission from the dielectric surfaces. In addition to the non-linearity analysis, the antenna spectra were for the first time used to determine the semi-quantitative values of the PSJ-radiated electric field. The electric fields decreased by a factor of 2 after the admixing of nitrogen and oxygen molecular gases. Out of the studied targets, the highest electric fields were observed when plasma impinged on the grounded targets, followed by the floating target (2x lower) and the PSJ ignited in the open space configuration (4x lower than in the grounded target configuration).
ER -
POLÁŠKOVÁ, Kateřina, Petr DREXLER, Miloš KLÍMA, Jan MACHÁČ, David NEČAS, Milan ŠVANDA a Lenka ZAJÍČKOVÁ. Electric field and higher harmonics of RF plasma slit jet measured by antennas and VI probes. \textit{Plasma Sources Science and Technology}. IOP Publishing Ltd, 2024, roč.~33, č.~5, s.~1-16. ISSN~0963-0252. Dostupné z: https://dx.doi.org/10.1088/1361-6595/ad48b5.
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