Title :
Laser Imaging of Secondary Breakdown Upon Nanosecond Electrical Explosion of Wire
Author :
Tkachenko, Svetlana I. ; Romanova, Vera M. ; Shelkovenko, Tatiana A. ; Ter-Oganesyan, Alexey E. ; Mingaleev, Albert R. ; Pikuz, Sergey A.
Author_Institution :
P.N. Lebedev Phys. Inst., Russian Acad. of Sci., Moscow
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.
Keywords :
copper; discharges (electric); exploding wires; laser beam applications; plasma diagnostics; YAG:Nd3+ laser; copper wires; current pulse; dense plasma; laser imaging; laser probing; nanosecond electrical explosion; optical images; plasma parameters; secondary breakdown; size 25 mum; wavelength 0.53 mum; wire explosion; Distribution of plasma parameters; electrical explosion of wire in media; optical images; properties of dense plasma;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2004.924586
