Slikboer, E and Walsh, J 
ORCID: 0000-0002-6318-0892
(2021)
Impact of electrical grounding conditions on plasma–liquid interactions using Thomson scattering on a pulsed argon jet
Scientific Reports, 11 (1).
17749-.
ISSN 2045-2322, 2045-2322
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Text
Impact of electrical grounding conditions on plasma-liquid interactions using Thomson scattering on a pulsed argon jet.pdf - Published version Download (2MB) | Preview |
Abstract
The interaction between an argon plasma jet excited using microsecond duration voltage pulses and a liquid target was examined using Thomson scattering to quantify the temporal evolution of the electron density and temperature. The electrical resistance between a liquid target and the electrical ground was varied from 1 to 680kΩ to mimic different conductivity liquids while the influence of the varying electrical properties on the electron dynamics within the plasma were examined. It was demonstrated that the interaction between the plasma jet and a liquid target grounded via a high resistance resulted in typical dielectric barrier discharge behaviour, with two discharge events per applied voltage pulse. Under such conditions, the electron density and temperature reached a peak of 1·1015cm-3 and 3.4 eV, respectively; with both rapidly decaying over several hundreds of nanoseconds. For liquid targets grounded via a low resistance, the jet behaviour transitioned to a DC-like discharge, with a single breakdown event being observed and sustained throughout the duration of each applied voltage pulse. Under such conditions, electron densities of 2-3·1015cm-3 were detected for several microseconds. The results demonstrate that the electron dynamics in a pulsed argon plasma jet are extremely sensitive to the electrical characteristics of the target, which in the case of water, can evolve during exposure to the plasma.
| Item Type: | Article |
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| Uncontrolled Keywords: | 51 Physical Sciences, 40 Engineering, 34 Chemical Sciences, 3406 Physical Chemistry |
| Divisions: | Faculty of Science & Engineering > School of Electrical Engineering, Electronics and Computer Science |
| Depositing User: | Symplectic Admin |
| Date Deposited: | 30 Sep 2021 14:49 |
| Last Modified: | 01 Mar 2026 10:47 |
| DOI: | 10.1038/s41598-021-97185-8 |
| Open Access URL: | https://doi.org/10.1038/s41598-021-97185-8 |
| Related Websites: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3138839 |
| Disclaimer: | The University of Liverpool is not responsible for content contained on other websites from links within repository metadata. Please contact us if you notice anything that appears incorrect or inappropriate. |
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