Abstract
Mathematical modelling of fast (microsecond) and superfast (nanosecond) regimes of electrical explosion of copper wires was carried out. The mechanism of electrical explosion was described as a process of propagation of the phase transition waves from outer boundary to the centre of the wire. The expressions for estimation of velocity of phase transition waves were obtained. Typical phase tracks were obtained for micro- and nanosecond electrical explosion of copper wires. Metal-dielectric phase transition takes place without phase transition to a two-phase state in the skin in a nanosecond explosion. The process of propagation of the evaporation waves is the mechanism of wire electric explosion in the microsecond regime.
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