The regulation of secondary explosives sensitivity to laser influence

The explosive decomposition of pentaerythritol tetranitrate (PETN) pressed pellets containing metal nanoparticles initiated by laser pulses was studied. The critical energy density values, which are the ones that make the sample to explode with 50% probability, were experimentally determined for PET...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2016-01, Vol.110 (1), p.12010-12014
Main Authors: Aduev, B P, Nurmukhametov, D R, Zvekov, A A, Liskov, I Yu
Format: Article
Language:English
Subjects:
Absorption coefficient
Absorptivity
Aluminum
Coefficient of variation
Energy density
Explosives
Flux density
Harmonics
Lasers
Nanoparticles
Neodymium lasers
Nickel
Pellets
PETN
Sensitivity
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Summary:The explosive decomposition of pentaerythritol tetranitrate (PETN) pressed pellets containing metal nanoparticles initiated by laser pulses was studied. The critical energy density values, which are the ones that make the sample to explode with 50% probability, were experimentally determined for PETN pellets containing nickel nanoparticles with three average radii initiated by the radiation of 1st harmonics of neodymium laser. It was shown that the critical energy density for PETN -Ni samples anti-correlates with the linear absorption coefficient determined with the optoacoustic approach. The dependence of the critical energy density of PET1N samples containing aluminum nanoparticles on their weight percent concentration was measured using the influence of 1st and 2nd harmonics of the laser. It was determined that the minimum critical energy density for both wavelengths coincide while the minimum abscissae, providing almost equal linear absorption coefficient, values are different. The variation of dopants' nanoparticles' radius and concentration makes it possible to regulate the sensitivity of PETN to laser influence.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/110/1/012010