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Effects of the electrical excitation signal parameters on the geometry of an argon-based non-thermal atmospheric pressure plasma jet.

Benabbas MT, Sahli S, Benhamouda A, Rebiai S - Nanoscale Res Lett (2014)

Bottom Line: The length and the shape of the created plasma jet were found to be strongly dependent on the electrode setup and the applied voltage and the signal frequency values.The length of the plasma jet increases when the applied voltage and/or its frequency increase, while the diameter at its end is significantly reduced when the applied signal frequency increases.This obtained size of the plasma jet diameter is very useful when the medical treatment must be processed in a reduced space.

View Article: PubMed Central - PubMed

Affiliation: Microsystems and Instrumentation Laboratory, Department of Electronics, Faculty of Sciences of Technology, University of Constantine 1, 25017, Constantine, Algeria, m.t.benabbas@gmail.com.

ABSTRACT
A non-thermal atmospheric pressure argon plasma jet for medical applications has been generated using a high-voltage pulse generator and a homemade dielectric barrier discharge (DBD) reactor with a cylindrical configuration. A plasma jet of about 6 cm of length has been created in argon gas at atmospheric pressure with an applied peak to peak voltage and a frequency of 10 kV and 50 kHz, respectively. The length and the shape of the created plasma jet were found to be strongly dependent on the electrode setup and the applied voltage and the signal frequency values. The length of the plasma jet increases when the applied voltage and/or its frequency increase, while the diameter at its end is significantly reduced when the applied signal frequency increases. For an applied voltage of 10 kV, the plasma jet diameter decreases from near 5 mm for a frequency of 10 kHz to less than 1 mm at a frequency of 50 kHz. This obtained size of the plasma jet diameter is very useful when the medical treatment must be processed in a reduced space. PACS 2008: 52.50.Dg; 52.70.-m; 52.80.-s.

No MeSH data available.


Photo showing the three regions of a typical plasma jet created in argon gas (Vpp = 10 kV;f = 50 kHz).
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Fig2: Photo showing the three regions of a typical plasma jet created in argon gas (Vpp = 10 kV;f = 50 kHz).

Mentions: A photo of a typical plasma jet created in argon gas is shown in Figure 2 for an applied voltage at the inner electrode of 10 kV and a frequency of 50 kHz. Three different regions are observed: the first one at the beginning of the jet with a conical shape, a second one at the middle of the plasma jet (the core), and a third one representing the tail of the jet. The diameter of the plasma jet is larger at the beginning than at its end. However, the geometry and the shape of the plasma jet were found dependent on the applied voltage and the signal frequency values. Depending on these electrical discharge parameters, the diameter of the plasma jet at the middle (core) and at its end can be varied from a few hundreds of micrometers to a few millimeters.Figure 2


Effects of the electrical excitation signal parameters on the geometry of an argon-based non-thermal atmospheric pressure plasma jet.

Benabbas MT, Sahli S, Benhamouda A, Rebiai S - Nanoscale Res Lett (2014)

Photo showing the three regions of a typical plasma jet created in argon gas (Vpp = 10 kV;f = 50 kHz).
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4494020&req=5

Fig2: Photo showing the three regions of a typical plasma jet created in argon gas (Vpp = 10 kV;f = 50 kHz).
Mentions: A photo of a typical plasma jet created in argon gas is shown in Figure 2 for an applied voltage at the inner electrode of 10 kV and a frequency of 50 kHz. Three different regions are observed: the first one at the beginning of the jet with a conical shape, a second one at the middle of the plasma jet (the core), and a third one representing the tail of the jet. The diameter of the plasma jet is larger at the beginning than at its end. However, the geometry and the shape of the plasma jet were found dependent on the applied voltage and the signal frequency values. Depending on these electrical discharge parameters, the diameter of the plasma jet at the middle (core) and at its end can be varied from a few hundreds of micrometers to a few millimeters.Figure 2

Bottom Line: The length and the shape of the created plasma jet were found to be strongly dependent on the electrode setup and the applied voltage and the signal frequency values.The length of the plasma jet increases when the applied voltage and/or its frequency increase, while the diameter at its end is significantly reduced when the applied signal frequency increases.This obtained size of the plasma jet diameter is very useful when the medical treatment must be processed in a reduced space.

View Article: PubMed Central - PubMed

Affiliation: Microsystems and Instrumentation Laboratory, Department of Electronics, Faculty of Sciences of Technology, University of Constantine 1, 25017, Constantine, Algeria, m.t.benabbas@gmail.com.

ABSTRACT
A non-thermal atmospheric pressure argon plasma jet for medical applications has been generated using a high-voltage pulse generator and a homemade dielectric barrier discharge (DBD) reactor with a cylindrical configuration. A plasma jet of about 6 cm of length has been created in argon gas at atmospheric pressure with an applied peak to peak voltage and a frequency of 10 kV and 50 kHz, respectively. The length and the shape of the created plasma jet were found to be strongly dependent on the electrode setup and the applied voltage and the signal frequency values. The length of the plasma jet increases when the applied voltage and/or its frequency increase, while the diameter at its end is significantly reduced when the applied signal frequency increases. For an applied voltage of 10 kV, the plasma jet diameter decreases from near 5 mm for a frequency of 10 kHz to less than 1 mm at a frequency of 50 kHz. This obtained size of the plasma jet diameter is very useful when the medical treatment must be processed in a reduced space. PACS 2008: 52.50.Dg; 52.70.-m; 52.80.-s.

No MeSH data available.