Study of Three-Dimensional Structure in Wire-ArrayZPinches by Controlled Seeding of Axial Modulations in Wire Radius

Abstract
Three-dimensional perturbations have been seeded in wire-array z pinches by etching 15μm diameter aluminum wires to introduce 20% modulations in radius with a controlled axial wavelength. These perturbations seed additional three-dimensional imploding structures that are studied experimentally and with magnetohydrodynamics calculations, highlighting the role of current path nonuniformity in perturbation-induced magnetic bubble formation.