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Title: Nanosecond time scale, high power electrical wire explosion in water

Abstract

Experimental and magnetohydrodynamic simulation results of nanosecond time scale underwater electrical explosions of Al, Cu, and W wires are presented. A water forming line generator with current amplitude up to 100 kA was used. The maximum current rise rate and maximum Joule heating power achieved during wire explosions were dI/dt{<=}500 A/ns and 6 GW, respectively. Extremely high energy deposition of up to 60 times the atomization enthalpy was registered compared to the best reported result of 20 times the atomization enthalpy for energy deposition with a vacuum wire explosion. Discharge channel evolution and surface temperature were analyzed by streak shadow imaging and by a fast photodiode with a set of interference filters, respectively. A 1D magnetohydrodynamic simulation demonstrated good agreement with experimental parameters such as discharge channel current, voltage, radius, and temperature. Material conductivity was calculated to produce the best correlation between the simulated and experimentally obtained voltage. It is shown that material conductivity may significantly vary as a function of energy deposition rate.

Authors:
; ; ; ; ;  [1];  [2]
  1. Physics Department, Technion, 32000 Haifa (Israel)
  2. (Russian Federation)
Publication Date:
OSTI Identifier:
20782752
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 13; Journal Issue: 4; Other Information: DOI: 10.1063/1.2188085; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ALUMINIUM; ATOMIZATION; COPPER; CORRELATIONS; ELECTRIC CURRENTS; ELECTRIC DISCHARGES; ELECTRIC POTENTIAL; ELECTRON TEMPERATURE; ENERGY DEPENDENCE; ENTHALPY; EXPLODING WIRES; EXPLOSIONS; FILTERS; ION TEMPERATURE; JOULE HEATING; MAGNETOHYDRODYNAMICS; PLASMA; PLASMA DIAGNOSTICS; PLASMA SIMULATION; SURFACES; THERMODYNAMICS; TUNGSTEN; UNDERWATER; WATER

Citation Formats

Grinenko, A., Krasik, Ya.E., Efimov, S., Fedotov, A., Gurovich, V.Tz., Oreshkin, V.I., and Institute of High Current Electronics, SB RAN, 634055 Tomsk. Nanosecond time scale, high power electrical wire explosion in water. United States: N. p., 2006. Web. doi:10.1063/1.2188085.
Grinenko, A., Krasik, Ya.E., Efimov, S., Fedotov, A., Gurovich, V.Tz., Oreshkin, V.I., & Institute of High Current Electronics, SB RAN, 634055 Tomsk. Nanosecond time scale, high power electrical wire explosion in water. United States. doi:10.1063/1.2188085.
Grinenko, A., Krasik, Ya.E., Efimov, S., Fedotov, A., Gurovich, V.Tz., Oreshkin, V.I., and Institute of High Current Electronics, SB RAN, 634055 Tomsk. Sat . "Nanosecond time scale, high power electrical wire explosion in water". United States. doi:10.1063/1.2188085.
@article{osti_20782752,
title = {Nanosecond time scale, high power electrical wire explosion in water},
author = {Grinenko, A. and Krasik, Ya.E. and Efimov, S. and Fedotov, A. and Gurovich, V.Tz. and Oreshkin, V.I. and Institute of High Current Electronics, SB RAN, 634055 Tomsk},
abstractNote = {Experimental and magnetohydrodynamic simulation results of nanosecond time scale underwater electrical explosions of Al, Cu, and W wires are presented. A water forming line generator with current amplitude up to 100 kA was used. The maximum current rise rate and maximum Joule heating power achieved during wire explosions were dI/dt{<=}500 A/ns and 6 GW, respectively. Extremely high energy deposition of up to 60 times the atomization enthalpy was registered compared to the best reported result of 20 times the atomization enthalpy for energy deposition with a vacuum wire explosion. Discharge channel evolution and surface temperature were analyzed by streak shadow imaging and by a fast photodiode with a set of interference filters, respectively. A 1D magnetohydrodynamic simulation demonstrated good agreement with experimental parameters such as discharge channel current, voltage, radius, and temperature. Material conductivity was calculated to produce the best correlation between the simulated and experimentally obtained voltage. It is shown that material conductivity may significantly vary as a function of energy deposition rate.},
doi = {10.1063/1.2188085},
journal = {Physics of Plasmas},
number = 4,
volume = 13,
place = {United States},
year = {Sat Apr 15 00:00:00 EDT 2006},
month = {Sat Apr 15 00:00:00 EDT 2006}
}