Restrike Channel Resistance of Thin Exploding Wires

Publisher Website
Google Scholar
Abstract
Using simultaneous measurements of current, voltage, and radius, the resistance of the restrike channels of thin exploding wires can be determined with good accuracy. Restrikes developing at the exterior or in the interior of exploding thin constantan and copper wires were examined. The wire length was 13 cm for constantan and 13.8 cm for copper, the wire diameter was 0.005 cm and the applied voltage was 1–23 kV. The results show that restrikes developing at the exterior of the wire have higher resistances than the restrikes developing in the interior. The values of the restrike resistance were compared with the relations of Toepler and Rompe and Weizel. The latter relation seems to be better suited for the description of the restrike resistance of thin exploding wires. The conductivity of the restrikes increases with increasing applied voltage and at high voltages the conductivity reaches values of 3×104 (Ω m)−1. The conductivity seems to reach its maximum on the ledge observed on the voltage oscillograms and to fall afterwards.

This publication has 7 references indexed in Scilit: