R. B. Baksht, S. I. Tkachenko, V. M. Romanova, A. R. Mingaleev, V. I. Oreshkin, A. E. Ter-Oganes'yan, T. A. Shelkovenko, S. A. Pikuz, T. A. Khattatov, “Stratification dynamics and the development of electrothermal instability at the wire explosion”, Zhurnal Tekhnicheskoi Fiziki, 2013, Volume 83, Issue 8,Pages <nobr>43

Plasma

Stratification dynamics and the development of electrothermal instability at the wire explosion

R. B. Baksht^a, S. I. Tkachenko^bc, V. M. Romanova^d, A. R. Mingaleev^d, V. I. Oreshkin^a, A. E. Ter-Oganes'yan^d, T. A. Shelkovenko^d, S. A. Pikuz^d, T. A. Khattatov^b

^a Institute of High Current Electronics, Siberian Branch of the Russian Academy of Sciences, Tomsk
^b Moscow Institute of Physics and Technology (National Research University), Dolgoprudny, Moscow Region
^c Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow
^d P. N. Lebedev Physical Institute, Russian Academy of Sciences, Moscow

Abstract: The stratification dynamics at wire explosion of copper and nickel wires (25 and 50 $\mu$m) in air is studied under current dwell conditions. Experimental and theoretical data are presented for the stratification of a core due to electrothermal instability. The evolution of strata during the quasi-adiabatic expansion of the core is studied, and it is shown that the elongation of strata and their dynamics are well described in terms of a model of electrothermal instability for conductors with different diameters.

Received: 14.11.2012