Laser-shocked energetic materials with metal additives: evaluation of chemistry and detonation performance

A focused, nanosecond-pulsed laser has been used to ablate, atomize, ionize, and excite milligram quantities of metal-doped energetic materials that undergo exothermic reactions in the laser-induced plasma. The subsequent shock wave expansion in the air above the sample has been monitored using high...

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Published in:Applied optics (2004) 2017-01, Vol.56 (3), p.B47-B57
Main Authors: Gottfried, Jennifer L, Bukowski, Eric J
Format: Article
Language:English
Subjects:
Additives
Aluminum
Detonation
Energetic materials
Explosive forming
Imaging
Inert
Nanostructure
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Bukowski, Eric J
description A focused, nanosecond-pulsed laser has been used to ablate, atomize, ionize, and excite milligram quantities of metal-doped energetic materials that undergo exothermic reactions in the laser-induced plasma. The subsequent shock wave expansion in the air above the sample has been monitored using high-speed schlieren imaging in a recently developed technique, laser-induced air shock from energetic materials (LASEM). The method enables the estimation of detonation velocities based on the measured laser-induced air-shock velocities and has previously been demonstrated for organic military explosives. Here, the LASEM technique has been extended to explosive formulations with metal additives. A comparison of the measured laser-induced air-shock velocities for TNT, RDX, DNTF, and LLM-172 doped with Al or B to the detonation velocities predicted by the thermochemical code CHEETAH for inert or active metal participation demonstrates that LASEM has potential for predicting the early time (
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subjects Additives
Aluminum
Detonation
Energetic materials
Explosive forming
Imaging
Inert
Nanostructure
title Laser-shocked energetic materials with metal additives: evaluation of chemistry and detonation performance
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