Generation of Pulsed Power by Opening Switch with Laser-Produced Plasma

传统的脉冲功率发生器是一台巨大的机器，它由马克斯银行和水电容器组成。对于许多研究人员来说，使用该系统非常困难。我们利用电感储能系统研制了结构紧凑、重量轻的脉冲功率发生器。铜熔断器被用作感应脉冲功率发生器所必需的断开开关。本研究的目的是研究利用激光等离子体的感应脉冲功率发生器的重复工作。(1)激光等离子体的断开开关能够在几十ns内中断大电流。(2)从激光聚焦的碳靶发射的中性气体对中断大电流具有重要作用。(3)实现了10pps的重复操作。(4)采用激光等离子体的断开开关能够在不进行维护的情况下操作数十万次脉冲功率。

The conventional pulsed power generator, which is composed of the Marx bank and the water capacitor, is a huge machine. It is very difficult for many researchers to use that system. We have developed the pulsed power generator, which is compact and light-weight, using an inductive energy storage system. The copper fuse has been used as an opening switch, which is necessary for the inductive pulsed power generator. However, the repetitive operation of pulsed power generator is difficult.The aim of this rescarch is to investigate the repetitive operation of the inductive pulsed power generator using laser-produced plasma.(1) The opening switch using laser-produced plasma is able to interrupt a high current within several ten's ns.(2) The neutral gas ejected from a carbon target, on which the laser light is focused, has an important role to interrupt a high current.(3) A repetitive operation of 10 pps was achieved.(4) The pulsed power generator with the opening switch using laser-producted plasma is able to be operated several hundred thousand shots without maintenance.