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Formation of the Magnetization Wave in the Prebreakdown Discharge Stage over the Ferrite Surface

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Abstract

Based on numerical simulation, the electrical processes during pulsed electric fields passage through dielectrics insulator with high permeabilities µ and permittivities ε were analyzed. It is shown that the passage of short intense voltage pulses causes a ferrite cylinder magnetization in a narrow submillimeter layer near the dielectric surface. As the magnetization region reaches an opposite electrode, the layer as a whole is tightened to the cylinder axis. In this case, the magnetization wavefront in the surface layer moves with velocity c. The analysis performed made it possible to construct a model explaining the formation of a narrowly directed short pulse of coherent electromagnetic radiation in the prebreakdown discharge stage over the surface of solid dielectric with high magnetic permeability µ. The model is based on the excitation of short-term magnetization of the ferrite surface in forming a field in the interelectrode gap and subsequent coherent addition of elementary waves forming resulting radiation.

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Funding

This study was supported by the Russian Science Foundation, project no. 19-79-30086.

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Authors and Affiliations

  1. Lebedev Physical Institute, Russian Academy of Sciences, 119991, Moscow, Russia

    A. A. Petrov, S. M. Klimovich, N. V. Pestovskii, I. N. Tilikin & S. Yu. Savinov

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  1. A. A. Petrov
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  2. S. M. Klimovich
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  3. N. V. Pestovskii
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  4. I. N. Tilikin
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  5. S. Yu. Savinov
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Correspondence to S. Yu. Savinov.

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Translated by A. Kazantsev

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Petrov, A.A., Klimovich, S.M., Pestovskii, N.V. et al. Formation of the Magnetization Wave in the Prebreakdown Discharge Stage over the Ferrite Surface. Bull. Lebedev Phys. Inst. 50, 503–509 (2023). https://doi.org/10.3103/S106833562311009X

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