Laser ignitibility of energetic crystals doped with gold nanoparticles

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dc.contributor.authorChurchyard, Sam
dc.contributor.authorFang, Xiao
dc.contributor.authorVrcelj, Ranko
dc.date.accessioned2019-01-21T15:46:24Z
dc.date.available2019-01-21T15:46:24Z
dc.date.issued2019-01-04
dc.description.abstractLaser 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.identifier.citationChurchyard S, Fang X, Vrcelj R. (2019) Laser ignitibility of energetic crystals doped with gold nanoparticles. Optics and Laser Technology, Volume 113, May 2019, pp. 281-288en_UK
dc.identifier.cris22618208
dc.identifier.issn0030-3992
dc.identifier.urihttps://doi.org/10.1016/j.optlastec.2018.12.021
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/13840
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectRDX precipitationen_UK
dc.subjectNanoparticlesen_UK
dc.subjectPlasmon resonanceen_UK
dc.subjectLaser ignitionen_UK
dc.titleLaser ignitibility of energetic crystals doped with gold nanoparticlesen_UK
dc.typeArticleen_UK

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