Electric discharge caused by expanding armatures in flux compression generators

Shkuratov, Sergey I.; Baird, Jason; Talantsev, E. F.; Altgilbers, L.L.

doi:10.1063/1.3127525

Cited by 9 publications

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“…We used a Cordin 10-A framing camera at half a million frames per second to photograph the experiments. Other experimental details are elsewhere [37], [38]. Fig.…”

Section: Resultsmentioning

confidence: 99%

High Voltage Generation With Transversely Shock-Compressed Ferroelectrics: Breakdown Field on Thickness Dependence

Shkuratov

Baird

Antipov

et al. 2016

IEEE Trans. Plasma Sci.

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The ability of ferroelectric materials to generate high voltage under shock compression is a fundamental physical effect that makes it possible to create miniature autonomous explosive-driven pulsed power systems. Shock-induced depolarization releases an electric charge at the electrodes of the ferroelectric element, and a high electric potential and a high electric field appear across the element. We performed systematic studies of the electric breakdown field, E b (d), as a function of the ferroelectric element thickness, d, for Pb(Zr 0.95 Ti 0.05 )O 3 (PZT 95/5) and Pb(Zr 0.52 Ti 0.48 )O 3 (PZT 52/48) ceramics compressed by transverse shock waves (shock front propagates perpendicular to the polarization vector) and established a relationship between these two values: E b (d) = const · d −ξ . This law was found to be true in a wide range of ferroelectric element thicknesses from 1 to 50 mm. This result makes it possible to predict ferroelectric generator (FEG) output voltages up to 500 kV and it forms the basis for the design of ultrahigh-voltage FEG systems. Index Terms-Electric breakdown, explosive pulsed power, ferroelectric generators (FEGs).

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