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The compact capacitor bank CQ-1.5 employed in magnetically driven isentropic compression and high velocity flyer
Guiji Wang1, Chengwei Sun, Fuli Tan
1Institution of Fluid Physics, China Academy of Engineering Physics, PO Box 919-113, Mianyang, Sichuan Province 621900, People's Republic of China.
Abstract:
Based on the low inductance capacitor, the parallel-plate transmission line, and the explosive network closing switch, a compact pulsed power generator CQ-1.5 has been developed at the Institute of Fluid Physics and is capable to deliver a current of peak of 1.5 MA within rise time of 500-570 ns into a 2-3 nH inductive load. The work is motivated to do isentropic compression experiments (ICEs) on metals up to 30-50 GPa and to launch flyer plates at velocities over 8 kms. The experiments were conducted with the diagnostics of both Doppler pin system and velocity interferometer system for any reflectors, and the measured free surface velocity histories of ICE samples were treated with a backward integration code. The results show that the isentropes of Cu and Al samples under 35 GPa are close to their Hugoniots within a deviation of 3%. The LY12 aluminum flyer plates were accelerated to a velocity over 8.96 kms.
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