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首页> 外文期刊>Plasma Sources Science & Technology >Laser-triggered gas switch with subnanosecond jitter and breakdown delay tunable over ～0.1–10 ns governed by the spark gap ignition angle
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Laser-triggered gas switch with subnanosecond jitter and breakdown delay tunable over ～0.1–10 ns governed by the spark gap ignition angle

机译：激光触发的气体开关与亚偶秒抖动和击穿延迟可调超过约0.1-10 ns的火花隙点火角度

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摘要

We created a practical air-filled switch triggered by a ～ 10~9 W picosecond laser beam with a slightly variable breakdown delay and low jitter. The switch relies on the spark gap with a coaxial geometry, which is ignited by a focused laser beam directed at a certain angle to the gap axis. The switch is integrated with a high-voltage cable generator operating at a constant negative voltage of up to 50 kV. We demonstrate that, by just varying the ignition angle of the spark gap, one can achieve variable breakdown delay tunable within ～ 0.1–10 ns with . 1 ns jitter. Empirical dependences of switching characteristics of the developed device on the ignition angle are obtained.We demonstrate that, combined with variation of the ignition beam energy and charging voltage, variation of the spark gap ignition angle provides superior control over the gap switching characteristics without complicating the switch design. The proposed approach to driving the switching characteristics appears highly promising for designing compact laser-triggered gas switches with variable temporal characteristics and achieving precise synchronization between high-voltage and measuring equipment.
机译：我们研制了一种实用的充气开关，由一束约10~9W皮秒的激光束触发，击穿延迟略有变化，抖动小。该开关依赖于具有同轴几何形状的火花隙，该火花隙由指向间隙轴一定角度的聚焦激光束点燃。该开关与高压电缆发生器集成，在高达50 kV的恒定负电压下运行。我们证明，只需改变火花隙的点火角，就可以在约0.1–10 ns的范围内实现可变击穿延迟可调。1ns抖动。得到了该装置开关特性与点火角的经验关系。我们证明，结合点火光束能量和充电电压的变化，火花隙点火角的变化在不使开关设计复杂化的情况下提供了对间隙开关特性的优越控制。所提出的驱动开关特性的方法对于设计具有可变时间特性的紧凑型激光触发气体开关以及实现高压和测量设备之间的精确同步具有很大的前景。

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  • 作者

    E V Parkevich; M A Medvedev; A S Selyukov; A I Khirianova; A R Mingaleev; A V Oginov;

  • 作者单位

    P.N. Lebedev Physical Institute of the Russian Academy of Sciences (FIAN) 53 Leninsky Pr. Moscow 119991 Russia;

    P.N. Lebedev Physical Institute of the Russian Academy of Sciences (FIAN) 53 Leninsky Pr. Moscow 119991 Russia;

    P.N. Lebedev Physical Institute of the Russian Academy of Sciences (FIAN) 53 Leninsky Pr. Moscow 119991 Russia;

    P.N. Lebedev Physical Institute of the Russian Academy of Sciences (FIAN) 53 Leninsky Pr. Moscow 119991 Russia;

    P.N. Lebedev Physical Institute of the Russian Academy of Sciences (FIAN) 53 Leninsky Pr. Moscow 119991 Russia;

    P.N. Lebedev Physical Institute of the Russian Academy of Sciences (FIAN) 53 Leninsky Pr. Moscow 119991 Russia;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 等离子体物理学;
  • 关键词

    laser triggering; spark switch; atmospheric discharge; high current electronics;

    机译：激光触发;火花开关;大气排放;高电流电子;

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