Laser ignitibility of energetic crystals doped with gold nanoparticles

Show simple item record Churchyard, Sam Fang, Xiao Vrcelj, Ranko 2019-01-21T15:46:24Z 2019-01-21T15:46:24Z 2019-01-04
dc.identifier.citation Churchyard S, Fang X, Vrcelj R. (2019) Laser ignitibility of energetic crystals doped with gold nanoparticles. Optics and Laser Technology, Volume 113, May 2019, pp. 281-288 en_UK
dc.identifier.issn 0030-3992
dc.description.abstract Laser ignition mechanism enhances the safety of explosive applications. However, optical sensitisation of the energetic materials is required for their optical absorption. In this research, explosive Cyclotrimethylene Trinitramine (RDX) was doped with gold nanoparticles during recrystallisation to provide a suitable optical sensitisation method. The relationship between the precipitation rate used during RDX recrystallisation and the subsequent laser ignition properties using an 808-nm continuous wave diode laser was studied. Faster initial precipitation was found to reduce the laser ignition delay times and smaller nanoparticle size reduced ignition thresholds. It was shown that recrystallized RDX particle size, which is determined by both nanoparticle induced nucleation and precipitation rate, affects the ignition delay time and quality of the crystals. The largest crystals in each batch were investigated using both high-speed photography and microscopic etching, revealing that in contrast to the bulk sample (which was generally a powder), a slower precipitation seems to achieve better doping. The largest crystals in each sample therefore do not represent the bulk sample, a useful indication as such large crystals are easier to handle and therefore tend to be selected for detailed characterisation work. en_UK
dc.language.iso en en_UK
dc.publisher Elsevier en_UK
dc.rights Attribution-NonCommercial-NoDerivatives 4.0 International *
dc.rights.uri *
dc.subject RDX precipitation en_UK
dc.subject Nanoparticles en_UK
dc.subject Plasmon resonance en_UK
dc.subject Laser ignition en_UK
dc.title Laser ignitibility of energetic crystals doped with gold nanoparticles en_UK
dc.type Article en_UK
dc.identifier.cris 22618208

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