Dynamics of thin exploded-wire plasma with a cold dense core

Ivanenkov, G. V.; Mingaleev, A. R.; Pikuz, S. A.; Romanova, V. M.; Shelkovenko, T. A.; Stepniewski, W.; Hammer, D. A.
October 1998
Journal of Experimental & Theoretical Physics;Oct98, Vol. 87 Issue 4, p663
Academic Journal
Ideas are put forward regarding the possibility of a cold dense core, surrounded by a plasma corona, forming near the axis at the initial stage of a nanosecond electric explosion of metal wires, and the influence of such a radial structure on the plasma compression dynamics is discussed. Experimental evidence supporting these suppositions is presented. It includes both indirect confirmations, based on optical and x-ray diagnostics data, and direct observations of the core by new means of x-ray probing employing an X pinch as a source of radiation.


Related Articles

  • Structure of the dense cores and ablation plasmas in the initiation phase of tungsten wire-array Z pinches. Douglass, J. D.; Pikuz, S. A.; Shelkovenko, T. A.; Hammer, D. A.; Bland, S. N.; Bott, S. C.; McBride, R. D. // Physics of Plasmas;Jan2007, Vol. 14 Issue 1, p012704 

    The early stages of tungsten (W) wire-array Z-pinch implosions have been studied using two-frame point projection x-ray backlighting on the 1 MA COBRA pulsed power generator [J. D. Douglass, J. B. Greenly, D. A. Hammer, and B. R. Kusse, in Proceedings of the 15th IEEE International Pulsed Power...

  • Effect of the high-voltage electrode polarity and wire preheating on the energy characteristics of electric explosion of fine tungsten wires in vacuum. Russkikh, A.; Baksht, R.; Labetskii, A.; Levashov, P.; Tkachenko, S.; Khishchenko, K.; Shishlov, A.; Fedyunin, A.; Chaikovskii, S. // Plasma Physics Reports;Oct2006, Vol. 32 Issue 10, p823 

    Results are presented from experiments on the explosion of 30.5-�m tungsten wires at a current density of up to 140 MA/cm2 and resistive-heating time of 40�100 ns. The experiments were performed both with and without preheating of wires and at different polarities of the high-voltage...

  • “Water bath” effect during the electrical underwater wire explosion. Oreshkin, V. I.; Chaikovsky, S. A.; Ratakhin, N. A.; Grinenko, A.; Krasik, Ya. E. // Physics of Plasmas;Oct2007, Vol. 14 Issue 10, p102703 

    The results of a simulation of underwater electrical wire explosion at a current density >109 A/cm2, total discharge current of ∼3 MA, and rise time of the current of ∼100 ns are presented. The electrical wire explosion was simulated using a one-dimensional...

  • Wire Explosion with 0–1kA per Wire. Kusse, Bruce R.; Hu, Min; Chandler, Katherine M.; Hammer, David A. // AIP Conference Proceedings;2002, Vol. 651 Issue 1, p221 

    Explosions of fine wires driven by a 4.5kA peak current peak were studied. The formation of a plasma shell around the wire core was observed. Mass density distributions as a function of time were measured, which provided more quantitative information about wire expansion. Combining these...

  • Joule Energy Deposition in Exploding Wire Experiments. Sarkisov, G. S.; Rosenthal, S. E.; Struve, K. W.; McDaniel, D. H.; Waisman, E. M.; Sasorov, P. V. // AIP Conference Proceedings;2002, Vol. 651 Issue 1, p213 

    Measurements of the Joule energy deposition into an exploding wire are presented. Energy deposition into the metal core is strongly dependent on current rate, voltage polarity, wire diameter and coatings, and the environment. The condition of the wire core after breakdown depends on atomization...

  • Investigation of the Initial Stage of Electrical Explosion of Fine Metal Wires. Sarkisov, G. S.; Rosenthal, S. E.; Struve, K. W.; McDaniel, D. H.; Waisman, E. M.; Sasorov, P. V. // AIP Conference Proceedings;2002, Vol. 651 Issue 1, p209 

    The results of an experimental investigation of the initial stage of the electrical explosion of thin metal wires are discussed. It is shown that energy deposition into the metal core depends on current rate and voltage polarity. The dependence of the expansion velocity and light emission on the...

  • Reply to “Some critical remarks about the paper, ‘A simple air wedge shearing interferometer for studying exploding wires’ ”. Pikuz, S. A. // Review of Scientific Instruments;Jun2003, Vol. 74 Issue 6, p3192 

    © 2003 American Institute of Physics.

  • Some critical remarks about the article “A simple air wedge shearing interferometer for studying exploding wires”. Sarkisov, G. S. // Review of Scientific Instruments;Jun2003, Vol. 74 Issue 6, p3190 

    Comments on the paper by Pikuz et al titled 'A simple air wedge shearing interferometer for studying exploding wires.' View that the air-wedge interferometer proposed by Pikuz et al operates with large incidence angles and cannot produce the correct image free from intensity modulation.

  • Electrical problem likely cause of inferno at CR 220 residence. SHARP, BENJAMIN C. // East Bernard Express (TX);3/20/2008, Vol. 65 Issue 12, p3 

    The article reports on the electrical problem which likely cause inferno at CR 220 residence of Joseph Gabriel Jr. in Hungerford, Texas.


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics