Plasma Physics Reports

, Volume 26, Issue 9, pp 745–758

Study of hydrodynamic instabilities of a Z-pinch during a high-current explosion of a thin wire

  • S. Yu. Gus’kov
  • G. V. Ivanenkov
  • A. R. Mingaleev
  • V. V. Nikishin
  • S. A. Pikuz
  • V. B. Rozanov
  • W. Stepniewski
  • V. F. Tishkin
  • D. A. Hammer
  • T. A. Shelkovenko
Plasma Dynamics

DOI: 10.1134/1.1309471

Cite this article as:
Gus’kov, S.Y., Ivanenkov, G.V., Mingaleev, A.R. et al. Plasma Phys. Rep. (2000) 26: 745. doi:10.1134/1.1309471

Abstract

Results are presented from laboratory and numerical experiments on the influence of the core and associated hydrodynamic instabilities on the high-current implosion of a plasma of exploding metal wires. The experimental investigation of the discharge structure was carried out using the multiframe X-ray backlighting technique with high temporal and spatial resolution (<1 ns and 1 µm, respectively); X-pinches were used as small-sized radiation sources. The implosion of a dense Z-pinch was modeled by the free-point method with the use of a two-dimensional radiative MHD code. The onset of instabilities at the corona-core boundary was modeled by the NUTCY Eulerian code. The results show that hydrodynamic processes in the core are primarily responsible for the formation of small bright regions observed in X-rays. After the reflection of a shock wave from the axis, the rapid onset of hydrodynamic instabilities can occur at the corona-core boundary.

Copyright information

© MAIK "Nauka/Interperiodica" 2000

Authors and Affiliations

  • S. Yu. Gus’kov
    • 1
  • G. V. Ivanenkov
    • 1
  • A. R. Mingaleev
    • 1
  • V. V. Nikishin
    • 2
  • S. A. Pikuz
    • 1
  • V. B. Rozanov
    • 1
  • W. Stepniewski
    • 3
  • V. F. Tishkin
    • 2
  • D. A. Hammer
    • 4
  • T. A. Shelkovenko
    • 1
  1. 1.Lebedev Institute of PhysicsRussian Academy of SciencesMoscowRussia
  2. 2.Institute of Mathematical ModelingRussian Academy of SciencesMoscowRussia
  3. 3.Kaliski Institute of Plasma Physics and Laser MicrofusionWarsawPoland
  4. 4.Laboratory of Plasma StudiesCornell UniversityIthacaUSA

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