Method and device for loading high-speed flyer based on electrical explosion and laser coupling

Abstract

The invention discloses a method and a device for loading a high-speed flyer based on electrical explosion and laser coupling. The device comprises a high-voltage capacitor discharge unit, an MCT high-voltage switch driving module, a solid pulse laser, an optical element and a digital delay generator, wherein the high-voltage capacitor discharge unit comprises a high-voltage capacitor, an MCT high-voltage switch and an exploding foil chip based on a transparent glass substrate; the digital delay generator is used for sending pulse signals to the MCT high-voltage switch driving module and the solid pulse laser. When the metal bridge foil generates electrical explosion under the effect of capacitor discharge, laser beams are incident to an electrical explosion product, namely plasma through the transparent glass substrate, secondary energizing is conducted on the plasma, and electric explosion and laser coupling accelerated flyer are realized. Laser and electric explosion are combined, secondary energizing is carried out on a metal electric explosion product by using laser, the temperature and pressure of plasma are improved, secondary acceleration is realized, and a new means is provided for research of impact dynamics.

Description

technical field [0001] The invention belongs to the field of high-speed flyer loading, and in particular relates to a method and device for loading high-speed flyer based on electric explosion and laser coupling. Background technique [0002] In the field of impact dynamics, in order to study the response of materials in extreme mechanical environments, it is often necessary to use dynamic high-voltage loading methods, such as electric guns, laser drives, explosion drives, etc. [0003] These methods all rely on high-speed or ultra-high-speed flyers hitting the target material to achieve dynamic high-pressure loading in the order of GPa-TPa. The principle of the electric gun is to generate a large pulse current through the discharge of a high-voltage capacitor, and the plasma generated by the electric explosion of the metal bridge foil under the action of Joule heat drives the flyer. But the energy driven by the pure electric explosion is limited, and the speed of the drive...

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Problems solved by technology

But the energy driven by a pure electric explosion is limited, and the speed of the driven flyer is also limited

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