TITLE

“Water bath” effect during the electrical underwater wire explosion

AUTHOR(S)
Oreshkin, V. I.; Chaikovsky, S. A.; Ratakhin, N. A.; Grinenko, A.; Krasik, Ya. E.
PUB. DATE
October 2007
SOURCE
Physics of Plasmas;Oct2007, Vol. 14 Issue 10, p102703
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
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 radiation-magnetohydrodynamic model. It is shown that the radiation of the exploded wire produces a thin conducting plasma shell in the water in the vicinity of the exploding wire surface. It was found that this plasma shell catches up to 30% of the discharge current. Nevertheless, it was shown that the pressure and temperature of the wire material remain unchanged as compared with the idealized case of the electrical wire explosion in vacuum. This result is explained by a “water bath” effect.
ACCESSION #
27370830

 

Related Articles

  • Study of the core gaps formed accidentally during wire explosion. Tkachenko, S.; Khattatov, T.; Romanova, V.; Mingaleev, A.; Baksht, R.; Oreshkin, V.; Shelkovenko, T.; Pikuz, S. // Plasma Physics Reports;Feb2012, Vol. 38 Issue 2, p100 

    During wire explosion, along with striations (a regular structure with alternating lower and higher density bands), low-density regions the characteristic axial size of which differs substantially from that of striations and can reach 1-2 mm are also observed in the discharge channel. Such...

  • Explosion of thin aluminum foils in air. Baksht, R.; Pokryvailo, A.; Yankelevich, Y.; Ziv, I. // Journal of Applied Physics;12/1/2004, Vol. 96 Issue 11, p6061 

    An inductive-based power supply (240 μH, 50 kA) was used for the investigation of the foil explosion process in the time range of 0.05 ms

  • Wire fixturing in high wire-number z pinches critical for high radiation power and reproducibility. Sanford, T. W. L.; Mock, R. C.; Seamen, J. F.; Lopez, M. R.; Watt, R. G.; Idzorek, G. C.; Peterson, D. L. // Physics of Plasmas;Dec2005, Vol. 12 Issue 12, p122701 

    The quality of high wire-number z-pinch implosions on Z using a dynamic hohlraum (DH) configuration [Sanford, et al., Phys. Plasmas 9, 3573 (2002)] is significantly affected by the method of holding the wires. The three arrangements discussed here have led to differences in radial and axial...

  • Experiments measuring the initial energy deposition, expansion rates and morphology of exploding wires with about 1 kA/wire. Sinars, D. B.; Hu, Min; Chandler, K. M.; Shelkovenko, T. A.; Pikuz, S. A.; Greenly, J. B.; Hammer, D. A.; Kusse, B. R. // Physics of Plasmas;Jan2001, Vol. 8 Issue 1, p216 

    Wire-array Z-pinch implosion experiments begin with wire heating, explosion, and plasma formation phases that are driven by an initial 50-100 ns, 0-1 kA/wire portion of the current pulse. This paper presents expansion rates for the dense, exploding wire cores for several wire materials under...

  • 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. // Journal of Experimental & Theoretical Physics;Oct98, Vol. 87 Issue 4, p663 

    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....

  • One-and-a-quarter-dimensional transport modeling of the field-reversed configuration. Werley, K. A. // Physics of Fluids (00319171);Jul87, Vol. 30 Issue 7, p2129 

    A radial time-dependent plasma transport code to be used for numerically modeling field-reversed configurations is described. The plasma model assumes two-fluid magnetohydrodynamics and includes a description of plasma on both the closed and open magnetic field lines, as well as such physics...

  • Heating and acceleration of plasma during explosion of a wire in vacuum in a strong longitudinal magnetic field. Adam’yan, Yu. É.; Vasilevskiı, V. M.; Kolgatin, S. N.; Shneerson, G. A. // Technical Physics;May99, Vol. 44 Issue 5, p588 

    Additional estimates {Yu. É. Adam’yan, A. N. Berezkin, and G. A. Shneerson, Abstracts of the VI All-Union Conference on the Physics of High-Temperature Plasmas [in Russian], Leningrad (1983), Vol. 2, pp. 387–389; Yu. É. Adam’yan, V. M. Vasilevskiı, Krivosheev et...

  • Characteristics of low energy atom and molecule beams generated by the charge exchange reaction. Hara, Yasuhiro; Takashima, Seigo; Yamakawa, Koji; Den, Shoji; Toyoda, Hirotaka; Sekine, Makoto; Hori, Masaru // Journal of Applied Physics;Mar2008, Vol. 103 Issue 5, p053301 

    A low energy NB source, which consisted of a surface wave plasma (SWP) source and two large diameter carbon electrodes, was developed for damageless etching of ultralarge-scale integrated devices. Ion beams were extracted from the SWP using two carbon electrodes, accelerated and injected to the...

  • The Thermal Instabilities on Electrical Explosion of Metal Wires. Oreshkin, V. I.; Baksht, R. B.; Ratakhin, N. A.; Labetsky, A. Yu.; Rousskikh, A. G.; Shishlov, A. V.; Levashov, P. R.; Khishchenko, K. V.; Glazyrin, I. V.; Beilis, I. // AIP Conference Proceedings;2006, Vol. 808 Issue 1, p103 

    An electrical explosion of thin metal wires at a current rise time of several tens of nanoseconds and at a current density of ∼108 A/cm2 was studied. A two-dimensional magnetohydrodynamic code based on the particle-in-cell method is used to calculate the formation of striations and a...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

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

Try another library?
Sign out of this library

Other Topics