Underwater Electrical Explosion of Wires and Wire Arrays and Generation of Converging Shock Waves

Yakov E. Krasik, Sergei Efimov, Daniel Sheftman, Alexander Fedotov-Gefen, Oleg Antonov, Daniel Shafer, David Yanuka, Michael Nitishinskiy, Maxim Kozlov, Leonid Gilburd, Gregory Toker, Svetlana Gleizer, Eran Zvulun, Victor Tz Gurovich, Dmitry Varentsov, Maria Rodionova

Research output: Contribution to journalArticlepeer-review

27 Citations (Scopus)

Abstract

A brief review of the results obtained in recent research of underwater electrical explosions of wires and wire arrays using microsecond-, submicrosecond-, and nanosecond-timescale high-current generators is presented. In a microsecond-timescale wire explosion, good agreement was attained between the results of experiments and the results of magnetohydrodynamic calculations coupled with equations of state (EOS) and modern conductivity models. Conversely, in a nanosecond-timescale wire explosion, the wire resistance and the EOS were modified in order to fit experimental data. In experiments with cylindrical and spherical wire arrays, generation of a converging shock wave (SW) was demonstrated allowing formation of an extreme state of water in the vicinity of either the axis or the origin of the SW's implosion. In addition, it is shown that SW convergence in superspherical geometry allows one to achieve larger values of pressure, density, and temperature of water in the vicinity of the axis of convergence than in the case of a spherical implosion. The results of experiments and numerical analysis showed that a cylindrical SW keeps its symmetry along the main path of its convergence. In addition, it is shown that underwater electrical explosion of an X-pinch wire configuration and a cone wire array allows one to generate fast jets of metal and water, respectively, without using chemical explosions.

Original languageEnglish
Article number7384527
Pages (from-to)412-431
Number of pages20
JournalIEEE Transactions on Plasma Science
Volume44
Issue number4
DOIs
Publication statusPublished - Apr 2016

Keywords

  • high energy density
  • plasma measurements
  • pulsed power supplies
  • strong shock waves
  • underwater electrical wire explosion
  • warm dense matter

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Condensed Matter Physics

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