Initiation of Preshocked High Explosives PBX-9404, PBX-9502, PBX-9501, Monitored with In-material Magnetic Gauging

Initiation of Preshocked High Explosives PBX-9404, PBX-9502, PBX-9501, Monitored with In-material Magnetic Gauging PDF Author:
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Languages : en
Pages : 9

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Book Description
Desensitization of explosives by preshocking is being studied using the well-supported plane shock waves generated by a gas gun. Evolution of the waves in the explosive is monitored using in-material multiple magnetic gauges to measure particle velocity in the lagrangian frame, over ≈ 3[mu]s of run. PBX-9404, PBX-9502 have been studied, at pressures up to 10.5 GPa. A substantial extension of the run to detonation is observed in PBX-9404, with the run beginning approximately at the end of the preshocked region. A reactive wave is observed while the preshock persists in both PBX-9404 and PBX-9501, but evidently does not contribute to the detonation wave or shorten the run to detonation. PBX-9502 is inert at pressures accessible with the gas gun, but serves to clarify the progress of multiple shocks over the off-Hugoniot EOS surface and the shock dynamics of wave coalescence.