Explosive Decomposition of High Explosives with Ultrafine Metal Particle Inclusions under the Influence of Pulse Laser Radiation

Abstract

This study describes a model for initiating an explosive decomposition of composite materials based on high explosives that weakly absorb radiation and ultrafine metal inclusions under the influence of nanosecond laser pulses. The model is based on experimental data obtained by investigating the explosive decomposition of PETN with ultrafine metal particle inclusions (Al, Ni, and 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 optoacoustic measurements. The algorithm is verified using data from laser initiation of RDX with inclusions of ultrafine iron particles.