Peculiarities of an Electrical Explosion of Flat Conductors in the Current Skinning Mode


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Аннотация

The propagation of a nonlinear magnetic-field diffusion wave generated under the condition of an electrical explosion of flat conductors is investigated in the current skinning mode. Using a MIG terrawatt generator, a number of experiments are performed on electrical explosion of a copper foil, 100 μm in thickness and 5 mm in width, at the current amplitude up to 2.5 MA and its rise rate 100 ns. It is shown that under these conditions a plasma channel is formed by approximately 75-th ns from the current onset. The estimations, made considering the magnetic field enhancement on the foil edges, demonstrate that about 70–80 ns are required for the nonlinear magnetic-field diffusion wave to propagate from the foil edge to its center. A good agreement of the experimental data and the estimates suggested a conclusion that the plasma channel formation is due to the convergence of the nonlinear diffusion wave towards the longitudinal foil axis.

Авторлар туралы

S. Chaikovskii

Institute of High Current Electronics of the Siberian Branch of the Russian Academy of Sciences; Institute of Electrophysics of the Ural Branch of the Russian Academy of Sciences

Хат алмасуға жауапты Автор.
Email: stas-chaikovsky@yandex.ru
Ресей, Tomsk; Ekaterinburg

V. Oreshkin

Institute of High Current Electronics of the Siberian Branch of the Russian Academy of Sciences; National Research Tomsk Polytechnic University

Email: stas-chaikovsky@yandex.ru
Ресей, Tomsk; Tomsk

N. Labetskaya

Institute of High Current Electronics of the Siberian Branch of the Russian Academy of Sciences

Email: stas-chaikovsky@yandex.ru
Ресей, Tomsk

I. Datsko

Institute of High Current Electronics of the Siberian Branch of the Russian Academy of Sciences

Email: stas-chaikovsky@yandex.ru
Ресей, Tomsk

D. Rybka

Institute of High Current Electronics of the Siberian Branch of the Russian Academy of Sciences

Email: stas-chaikovsky@yandex.ru
Ресей, Tomsk

V. Vankevich

Institute of High Current Electronics of the Siberian Branch of the Russian Academy of Sciences

Email: stas-chaikovsky@yandex.ru
Ресей, Tomsk

N. Ratakhin

Institute of High Current Electronics of the Siberian Branch of the Russian Academy of Sciences

Email: stas-chaikovsky@yandex.ru
Ресей, Tomsk

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