Abstract

Copper wires of diameter d = 25 mum were exploded in air by a current pulse with a rise rate of ~25 A/ns. Laser probing measurements were performed with the second harmonic of a YAG:Nd3+ laser (lambda = 0.53 mum and Deltat = 10 ns). For the first time, laser images of the current channels were obtained upon electrical explosion of copper wires in air.

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