Accession Number : ADA114791

Title :   A Miniature Ionization Probe Technique Using a Multilayer Circuit Board for the Study of Explosive Phenomena in Primary and Secondary Explosives,


Personal Author(s) : Spear,Robert J ; Bentley,John R ; Wolfson,Michael G

PDF Url : ADA114791

Report Date : May 1981

Pagination or Media Count : 26

Abstract : A miniature ionization probe technique using a multilayer circuit board has been developed. Full experimental details including construction of the boards, explosive charge preparation and instrumentation are reported. Each copper layer in the circuit board functions as an ionization probe and optimum conditions were achieved with a probe density of 15 per cm, ie, probe separation about 0.75 mm. Explosive samples were studied in a geometry similar to that of practical fuze detonators; the pressed explosive columns were 5-8 mm long and masses ranged from 0.58 g to only 0.08 g. Accurate, reproducible detonation velocity measurements have been obtained for the primary explosives service lead azide, at a wide range of densities, lead azide, RD1343, silver azide and mercuric 5-nitro-tetrazole and the secondary explosive tetryl. Some potential improvements and future uses of the technique are discussed. (Author)

Descriptors :   *Circuit boards, *Layers, *Ionization, *Probes, *Explosives, Explosive charges, Copper, Sampling, Lead azides, Tetryl, Detonations, Velocity, Australia, Measurement, Detonators, Miniaturization, Optimization, Silver compounds, Azides, Mercury compounds, Australia

Subject Categories : Electrical and Electronic Equipment
      Ammunition and Explosives

Distribution Statement : APPROVED FOR PUBLIC RELEASE