Study of underwater discharge initiated by a high-voltage preliminary pulse produced by a Marx generator

0570328 - ÚFP 2023 RIV US eng J - Journal Article
Stelmashuk, Vitaliy - Tuholukov, Andrii - Krasik, Y. E. - Hoffer, Petr - Schmidt, Jiří - Štraus, Jaroslav - Frolov, Oleksandr
Study of underwater discharge initiated by a high-voltage preliminary pulse produced by a Marx generator.
Journal of Applied Physics. Roč. 133, č. 3 (2023), č. článku 033301. ISSN 0021-8979. E-ISSN 1089-7550
R&D Projects: GA ČR(CZ) GA18-12386S; GA MŠMT(CZ) LTC20061
Institutional support: RVO:61389021
Keywords : underwater discharge * Marx generator * high voltage
OECD category: Fluids and plasma physics (including surface physics)
Impact factor: 3.2, year: 2022
Method of publishing: Limited access
https://aip.scitation.org/doi/10.1063/5.0132851

The results of experimental research on the acoustic and electrical characteristics of underwater spark discharges facilitated by a preliminary discharge are presented. The latter was produced through the application of a short duration high-voltage pulse formed by a Marx generator. The application of this pulse lead to the formation of a low-density region in the form of a streamer which transformed to an oscillating vapor cavity. It was shown that this method provided a breakdown of a significantly increased interelectrode gap for the same charging voltage of the main capacitor and allowed the generation of stronger shocks. The temporal development of transient discharges in a long gap and the relationships between the hydrodynamic and electrical parameters of such discharges are reported and analyzed.
Permanent Link: https://hdl.handle.net/11104/0341624