Spatiotemporal dynamics of nanosecond pulsed discharge in the form of a fast ionization wave: self-consistent two-dimensional modeling and comparison with experiments under negative and positive polarity.
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| Natura: | Recurso digital |
| Lingua: | inglese |
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2025
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| _version_ | 1866901359989620736 |
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| author | Kourtzanidis, Konstantinos Starikovskaia, Svetlana |
| author_facet | Kourtzanidis, Konstantinos Starikovskaia, Svetlana |
| contents | <p>Nanosecond discharges are characterized by a shift in energy branching toward the excitation of electronic levels and dissociation, making them particularly attractive for plasma chemistry. Understanding the spatio-temporal structure of these discharges is especially important. This paper presents a detailed 2D-axisymmetric numerical analysis of a nanosecond discharge propagating in a long tube and in pure nitrogen. The modeling is conducted using a self-consistent plasma fluid solver under the local mean energy approximation, including photoionization. The discharge develops at moderate pressures, 1–10 Torr, in the form of a fast ionization wave (FIW). Simulations are performed for both negative and positive polarities of the voltage pulse applied to the high-voltage electrode. The computational results are validated against available experimental data, including FIW velocity within the studied pressure range, electron density, longitudinal electric field, and the radial distribution of N<sub>2</sub>(C<span><span>3Πu</span></span>) emission on a nanosecond timescale.</p> |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_1088_1361-6463_adcace |
| institution | Zenodo |
| language | eng |
| publishDate | 2025 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | Spatiotemporal dynamics of nanosecond pulsed discharge in the form of a fast ionization wave: self-consistent two-dimensional modeling and comparison with experiments under negative and positive polarity. Kourtzanidis, Konstantinos Starikovskaia, Svetlana nanosecond discharge fast ionization wave plasma modeling low temperature plasma pulsed discharge Plasma physics <p>Nanosecond discharges are characterized by a shift in energy branching toward the excitation of electronic levels and dissociation, making them particularly attractive for plasma chemistry. Understanding the spatio-temporal structure of these discharges is especially important. This paper presents a detailed 2D-axisymmetric numerical analysis of a nanosecond discharge propagating in a long tube and in pure nitrogen. The modeling is conducted using a self-consistent plasma fluid solver under the local mean energy approximation, including photoionization. The discharge develops at moderate pressures, 1–10 Torr, in the form of a fast ionization wave (FIW). Simulations are performed for both negative and positive polarities of the voltage pulse applied to the high-voltage electrode. The computational results are validated against available experimental data, including FIW velocity within the studied pressure range, electron density, longitudinal electric field, and the radial distribution of N<sub>2</sub>(C<span><span>3Πu</span></span>) emission on a nanosecond timescale.</p> |
| title | Spatiotemporal dynamics of nanosecond pulsed discharge in the form of a fast ionization wave: self-consistent two-dimensional modeling and comparison with experiments under negative and positive polarity. |
| topic | nanosecond discharge fast ionization wave plasma modeling low temperature plasma pulsed discharge Plasma physics |
| url | https://doi.org/10.1088/1361-6463/adcace |