Krasik, Ya E., Fedotov, A., Sheftman, D., Efimov, S., Sayapin, A., Gurovich, V. Tz, Veksler, D., Bazalitski, G., Gleizer, S., Grinenko, A. and Oreshkin, V. I. (2010) Underwater electrical wire explosion. In: 29th International Conference on Phenomena in Ionized Gases, Cancun, Mexico, July 12-17, 2009. Published in: Plasma Sources Science and Technology, Vol.19 (No.3). Article no. 034020. ISSN 0963-0252. doi:10.1088/0963-0252/19/3/034020

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Abstract

A brief review of the results obtained in recent research of underwater electrical wire explosions using microsecond and nanosecond generators is presented. It was shown that the increase in the rate of energy input into the exploding wire allows one to increase the wire temperature and amplitude of shock waves (SWs). Estimated energy deposition into Cu and Al wire material of up to 200 eV/atom was achieved. In microsecond time scale wire explosion, a good agreement was attained between the wire resistance calculated using the equation of state (EOS) and that obtained experimentally. Conversely, in nanosecond time scale wire explosion, the wire resistance of EOS was modified in order to fit experimental data. Analysis of the emitted radiation showed that black body approximation cannot be used to characterize exploding wire radiation. It was found that <= 24% of the deposited energy is transferred into the water flow's mechanical energy. Also, it was shown that converging SWs formed by the explosion of cylindrical wire arrays can be used to achieve a pressure up to 250 kbar at the axis of implosion. Hydrodynamic simulations showed that with the use of relatively moderate pulsed power generators with stored energy of several hundred kilojoules, a pressure of several megabar can be achieved at the axis of implosion.

Item Type:	Conference Item (Paper)
Subjects:	Q Science > QC Physics
Divisions:	Faculty of Science > Physics
Journal or Publication Title:	Plasma Sources Science and Technology
Publisher:	IOP Publishing Ltd
ISSN:	0963-0252
Official Date:	June 2010
Dates:	Date Event June 2010 Published
Volume:	Vol.19
Number:	No.3
Number of Pages:	8
Page Range:	Article no. 034020
DOI:	10.1088/0963-0252/19/3/034020
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
Conference Paper Type:	Paper
Title of Event:	29th International Conference on Phenomena in Ionized Gases
Type of Event:	Conference
Location of Event:	Cancun, Mexico
Date(s) of Event:	July 12-17, 2009

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