Peculiarities of an Electrical Explosion of Flat Conductors in the Current Skinning Mode

S. A. Chaikovskii, V. I. Oreshkin, N. A. Labetskaya, I. M. Datsko, D. V. Rybka, V. A. Vankevich, N. A. Ratakhin

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

The propagation of a nonlinear magnetic-field diffusion wave generated under the condition of an electrical explosion of flat conductors is investigated in the current skinning mode. Using a MIG terrawatt generator, a number of experiments are performed on electrical explosion of a copper foil, 100 μm in thickness and 5 mm in width, at the current amplitude up to 2.5 MA and its rise rate 100 ns. It is shown that under these conditions a plasma channel is formed by approximately 75-th ns from the current onset. The estimations, made considering the magnetic field enhancement on the foil edges, demonstrate that about 70–80 ns are required for the nonlinear magnetic-field diffusion wave to propagate from the foil edge to its center. A good agreement of the experimental data and the estimates suggested a conclusion that the plasma channel formation is due to the convergence of the nonlinear diffusion wave towards the longitudinal foil axis.

Original languageEnglish
Pages (from-to)1235-1242
Number of pages8
JournalRussian Physics Journal
Volume62
Issue number7
DOIs
Publication statusPublished - 1 Nov 2019

Keywords

  • electrical explosion of conductors (EEC)
  • high-density low-temperature plasma
  • nonlinear magnetic-field diffusion
  • pulsed current generator
  • superstrong magnetic fields

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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