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Circuit simulation of the behavior of exploding wires for nano-powder production

Published online by Cambridge University Press:  08 January 2009

Z. Mao ,
X. Zou ,
X. Wang ,
X. Liu  and
W. Jiang
Z. Mao
Affiliation:
Department of Electrical Engineering, Tsinghua University, Beijing, China
X. Zou
Affiliation:
Department of Electrical Engineering, Tsinghua University, Beijing, China
X. Wang*
Affiliation:
Department of Electrical Engineering, Tsinghua University, Beijing, China
X. Liu
Affiliation:
Department of Electrical Engineering, Tsinghua University, Beijing, China
W. Jiang
Affiliation:
Department of Electrical Engineering, Tsinghua University, Beijing, China
*
Address correspondence and reprint requests to Xinxin Wang, Department of Electrical Engineering, Tsinghua University, Beijing, China. E-mail: wangxx@mail.tsinghua.edu.cn
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Abstract

The electrical behavior of exploding wires was obtained by numerically solving the nonlinear differential equation describing the discharge circuit. For metal wires of high conductivity and low sublimation heat, such as copper, aluminum, gold, and silver, the circuit simulation can be well performed based on the resistivity model developed by Tucker in which the resisitivity is expressed by the explicit functions of specific action, i.e., ρ = f(g). For metals such as titanium and zinc with anomalously changing resistivity, i.e., decreasing rather than increasing with the liquid heating, the circuit simulation of the exploding wires can be performed using the implicit relationship between ρ and g that is read out point by point from the experimentally measured curve. Using the circuit simulation, the rate of the energy deposition in the exploding wires before the explosion can be obtained, which is helpful to choose the right experimental conditions for possible overheating that is desirable for getting smaller nano-powders produced by exploding wires.

Keywords

Circuit simulationExploding wiresNano-powder production
Type
Research Article
Information
Laser and Particle Beams , Volume 27 , Issue 1 , March 2009 , pp. 49 - 55
Copyright
Copyright © Cambridge University Press 2009

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