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Influence of the mass fraction of oxide in aluminum nanoparticles on the explosive decomposition threshold and light absorption efficiency in PETN-based compounds

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Combustion, Explosion, and Shock Waves Aims and scope

Abstract

Pulsed laser initiation is used to experimentally investigate the thresholds of explosive decomposition of PETN-based compounds with aluminum nanoparticle inclusions depending on the core-shell (Al/Al2O3) mass ratio in the particle. It is found that, with decreasing mass fraction of Al from 74 to 13%, the explosive decomposition threshold increases by a factor of 12.5. Light absorption efficiency calculations for the core-shell system performed by the Aden-Kerker method for Al/Al2O3 inclusions in PETN show that this efficiency decreases with decreasing mass of metal in the particle. The experimental and theoretical results can be regarded as an additional confirmation of the hot-spot concept of laser initiation of PETN containing nanoscale inclusions of metals.

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Correspondence to B. P. Aduev.

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Original Russian Text © B.P. Aduev, D.R. Nurmukhametov, A.A. Zvekov, N.V. Nelyubina.

Published in Fizika Goreniya i Vzryva, Vol. 50, No. 5, pp. 87–90, September–October, 2014.

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Aduev, B.P., Nurmukhametov, D.R., Zvekov, A.A. et al. Influence of the mass fraction of oxide in aluminum nanoparticles on the explosive decomposition threshold and light absorption efficiency in PETN-based compounds. Combust Explos Shock Waves 50, 578–581 (2014). https://doi.org/10.1134/S001050821405013X

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  • DOI: https://doi.org/10.1134/S001050821405013X

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