A New Type of Uncontrolled Multichannel Discharger for Nanosecond Switching of Megaampere Currents

IF 0.6 4区物理与天体物理 Q4 MECHANICS Doklady Physics Pub Date : 2023-03-24 DOI:10.1134/S1028335822100044

E. A. Galanova, Yu. N. Dolin, A. V. Ivanovsky, A. E. Kalinychev, G. V. Karpov, S. S. Lomtev, A. G. Merzlov, V. N. Nudikov, D. S. Prokhorov, E. A. Salatov, A. N. Turov, A. A. Shatalin

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Abstract

A multichannel uncontrolled discharger based on staged breakdown of a multilayer film insulator with an enclosed foil plate under floating potential has been developed. An abrupt change in the foil potential after a single-channel initial self-breakdown between the foil and one of the electrodes leads to a multi-channel secondary breakdown between the foil and the other electrode. Cumulative plasma jets are generated in places of breakdown and they initiate the formation of the through current channels between the electrodes at the third stage of the breakdown. The developed multichannel discharger has a nanosecond response time and can be used to sharpen the voltage pulse front in the electric-discharge devices with megaampere currents. A similar method of formation of a multichannel breakdown can be used in the development of nanosecond switches of multimegaampere currents in the directions of thermonuclear research with the use of explosive magnetic energy generators.

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一种用于毫安电流纳秒开关的新型无控多通道放电装置

研制了一种基于浮电位下封闭箔板多层膜绝缘子分阶段击穿的多通道无控放电装置。在箔和其中一个电极之间的单通道初始自击穿后，箔电位的突变导致箔和另一个电极之间的多通道二次击穿。在击穿部位产生累积等离子体射流，并在击穿的第三阶段开始在电极之间形成通流通道。所研制的多通道放电装置具有纳秒级的响应时间，可用于兆安电流放电装置的电压脉冲前沿锐化。形成多通道击穿的类似方法可用于热核研究方向上使用爆炸磁能发生器开发多兆安培电流的纳秒开关。

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来源期刊

Doklady Physics 物理-力学

CiteScore

1.40

自引率

12.50%

发文量

审稿时长

4-8 weeks

期刊介绍： Doklady Physics is a journal that publishes new research in physics of great significance. Initially the journal was a forum of the Russian Academy of Science and published only best contributions from Russia in the form of short articles. Now the journal welcomes submissions from any country in the English or Russian language. Every manuscript must be recommended by Russian or foreign members of the Russian Academy of Sciences.