A Series of Joint VNIIEF/LANL Explosive Magnetic Experiments RHSR-0,1,2 on Radiographic Study of Perturbations Growth at a Copper Liner Boundary with Polyethylene or Water

In the three joint VNIIEF/LANL experiments RHSR-0,1,2 with a disk EMG and a three-layer liner system (Al-dielectric-Cu) a method of radial radiography was used to study growth of perturbations amplitude at the boundary between copper layer and polyethylene (in experiments RHSR-0,1) and water (in experiment RHSR-2); the growth occurs during the evolution of the Raleigh-Taylor instability of this boundary.

I. Introduction

According to calculations [1] – [2], the disk explosive magnetic generators (DEMG) of 40 cm in diameter designed at VNIIEFP can be effectively used to study the dynamic strength of materials on the basis of perturbations growth in the magnetically driven layered cylindrical liner systems. In these systems the loading regimes for the liners under examination depend heavily on the pulsed power of the explosive magnetic system (number of modules in DEMG , initial current, the use of an opening switch in DEMG, etc.) and on the characteristics of the liner systems.