Explosive Decomposition of High Explosives with Inclusions of Ultrafine Metal Particles under the Influence of Pulse Laser Radiation
B. P. Aduev, D. R. Nurmukhametov, N. V. Nelyubina, I. Yu. Liskov, G. M. Belokurov
Federal Research Center of Coal and Coal Chemistry, Siberian Branch, Russian Academy of Sciences, Kemerovo, Russia
Keywords: laser initiation, ultrafine particles, explosion, RDX, heating element, hot spot, shock wave mechanism
Abstract
This study describes a model for initiating an explosive decomposition of composite materials based on high explosives that weakly absorb radiation and ultradisperse metal inclusions under the influence of nanosecond laser pulses. The model is based on experimental results obtained from studying the explosive decomposition of PETN with inclusions of ultrafine metal particles (Al, Ni, Fe). The model serves as a basis for constructing a scientifically grounded algorithm for determining the composition of a material with minimal thresholds for laser initiation of explosive decomposition, which makes it possible to replace most experiments with theoretical calculations and optical-acoustic measurements. The algorithm is verified using data from laser initiation of RDX with inclusions of ultrafine iron particles.
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