Pentaerythritol Tetranitrate (PETN), Hexanitrostilbene (HNS), and PBX-9407 (RDX (cyclotrimethylenetrinitramine)) were initiated using polyimide flyer plates accelerated by the electrical explosive of a thin metal film, with shock durations from 3 to 13 nanoseconds and shock pressures from 7 to 16 GPa. The flyer diameters were in excess of the critical diameter of the explosives, allowing a one-dimensional treatment of the initiation. Critical energy criteria were used to evaluate the results, with values for the critical fluence, critical specific energy and critical intensity for each material determined. This allows for the efficient design of slapper detonators, by providing a method to predict the threshold of a design prior to experimental validation.
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