Detonation Mechanism of PETN Explosives with Sodium Hydrocarbonate
I. A. Spirin, D. A. Pronin, E. S. Mitin, V. G. Simakov, V. A. Bragunets, A. V. Tsvetkov, E. E. Shestakov, Yu. M. Sustaeva, O. V. Shevlyagin, S. A. Vakhmistrov
All-Russian Research Institute of Experimental Physics Institute of Experimental Gas Dynamics and Detonation Physics, Sarov, 607190 Russia
Keywords: explosive, detonation wave, explosive combustion, explosion products, photo registration, piezoelectric pressure sensor, radio-interferometric method
Abstract
The detonation of mixtures of highly dispersed PETN with sodium bicarbonate with a mass fraction of the latter up to 90 % is investigated using radio-interferometric and electron-optical (NANOGATE-22) methods along with a method using a PVDF pressure sensor. The experimental results obtained indicate the possibility of the existence of various detonation regimes in mixtures. If the mass fraction of NaHCO3 ≤ 85 %, the detonation wave propagation is mainly due to shock compression. At a higher NaHCO3 content (90 %), the jets of explosion products predominantly serve as propagation agents.
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