Load Current Sharpening and Liner Implosions on a Capacitor Bank

摘要

Experiments on sharpening the current through the liner load were performed on a capacitor bank (I ～ 400 kA, T/4 ～ 1.1 μs). Three load region configurations were tested. Each configuration includes two gas-puff shells. The current flows through the outer shell and switches to the inner shell at the current maximum. High efficiency of the inductive energy transfer to the liner and x -ray radiation (～50%) was demonstrated. Visible streak and x-ray pinhole cameras were used to observe the behavior of the shells and the formation of a compact pinch (r_f < 1 mm). The highest neon K-shell yield (up to 80 J) was obtained for the double shell liner configuration. The mechanism of the current switching to the inner shell is discussed.