Velocity Attenuation of Explosive-Produced Air Shocks

Abstract

A method for measuring the velocities of explosive-produced air shocks using an electrical ionization probing system is described. The results of such measurements indicate that under varying conditions of confinement of explosive and air shock, that the reciprocal of the air-shock velocity varies linearly with the distance to the charge surface.

Production and measurement of high temperatures

“…From the theoretical point of view (Butler 1955) converging shocks are unstable. Small perturbations in the front grow during the contraction in such a manner that the ratio of perturbation curvature to mean curvature tends to infinity when the wave reaches the centre, In practice there is no evidence of such instabilities either by flash radiographs of cylindrically converging shocks (Schall and Thomer 1951) or by photographs of colliding detonation waves (Funfer and Muller 1954). It seems that in these experiments shock strength was not sufficiently high to let instabilities become effective.…”