NANOSYSTEMS: PHYSICS, CHEMISTRY, MATHEMATICS, 2016, 7 (6), P. 1017–1023
The dependence of the critical energy density and hot-spot temperature on the radius of metal nanoparticles in PETN
A. A. Zvekov – Federal Research Center of coal and coal chemistry SB RAS (Institute of Coal Chemistry and Material Science SB RAS), Kemerovo, 650000, Russia
A. P. Nikitin – Federal Research Center of coal and coal chemistry SB RAS (Institute of Coal Chemistry and Material Science SB RAS), Kemerovo, 650000, Russia
E.V. Galkina – Kemerovo state University, Kemerovo, 650000, Russia
A.V. Kalenskii – Kemerovo state University, Kemerovo, 650000, Russia; kriger@kemsu.ru
The dependencies of critical energy density and corresponding hot-spot temperature were calculated in terms of thermal model of energetic materials laser initiation for 12 metal nanoparticles in pentaerythritol tetranitrate (PETN) at pulse duration 12 ns. We showed that the critical hot-spot temperature depends mostly on the nanoparticle’s radius while its dependence on the specific heat of the metal is much weaker. The equations for the critical parameters of initiation on radius and specific heat of the nanoparticles were derived. The results are essential for the explosive compounds for optical detonator cup optimization.
Keywords: pentaerythritol tetranitrate, metal nanoparticles, laser radiation, hot-spot model.
PACS 61.46.+w, 82.33.Vx
DOI 10.17586/2220-8054-2016-7-6-1017-1023
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