Shape of flyers driven by metal-electric explosion: experimental method (Part I)

Abstract

To study the internal mechanism of the metal-electric explosion process, it is necessary to obtain internal information regarding the flow field by performing transmission imaging of the electric explosion plasma. In this study, a laser plasma X-ray source is used as the transient X-ray source. Flyer dynamic X-ray imaging technology of laser plasma X-ray sources is realized by designing and developing flyer-driving devices, laser plasma X-ray devices, and timing synchronization modules. This technology has the advantages of producing images having high-brightness and high temporal and spatial resolutions, and it can adapt to the transmission imaging of high-speed micro flyers and their accompanying plasma. The experimental results show that a clear image of a high-speed flyer and the internal state information of the plasma can be obtained by using this technology. The spatial resolution is 8 μm/pixel, and the temporal resolution is 1 ns. This study presents an experimental method for further studies on the evolution process of plasma and flyers.

Keywords

• Dynamic flyer
• Laser plasma
• X-ray imaging
• Electric explosion