Simulation of wire array implosions on high-current pulsed power generators

Abstract

Summary form only given, as follows. We have developed a dynamic model for wire array implosions that fully accounts for the inductive coupling between the individual wires and the current return structure. The model simulates implosions of complex loads, which might include separation (tearing) and interpenetration of the straight current-carrying elements on the plane normal to the pinch axis. We show the model's capability to simulate fast commutation of multiMA current in double wire array loads (with 120 to 240 and more wires) imploded on PBFA II-Z, which is likely to increase the output radiation power, formation of the plasma and current precursor near the pinch axis, coalescence of individual wires into a plasma shell, production of sheared rotation in an imploded load and generation of debris particles in the current return structure.