Ultrahigh-speed simultaneous framing and streak photography of magnetic flux compression by explosive cylindrical implosion

In this paper, we applied the utility of ultrahigh-speed simultaneous framing and streak photography technology in the experiment of magnetic flux compression by cylindrical implosion. For the first time, we obtained the spatio-temporal 1D and 2D images of compression process of magnetic field with high temporal and spatial resolutions using ultrahigh-speed simultaneous framing and streak photography techniques. We observed the whole compression and rebound process. Curves of diameter change with time and the compression speed were obtained. The experiment results shows that the compression process had interface instability and asymmetry phenomena, the whole compression time was 8-10 s, and the whole compression speed was 3.8-4.5 km/s.