About laser heat absorbing impurities in the transparence matrix of pentaerythritol tetranitrate

5th International Congress on Energy Fluxes and Radiation Effects 2016

Murastov, G.^1 ; Tsipilev, V.^1 ; Ovchinnikov, V.^1 ; Yakovlev, A.^1

National Research Tomsk Polytechnic University, 30 Lenin Ave., Tomsk

634050, Russia^1

关键词: Absorption cross sections;    Explosive decomposition;    Explosive materials;    Heating temperatures;    Pentaerythritol tetranitrate;    Reactive capacity;    Spherical particle;    Transparent matrix;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/830/1/012155/pdf
DOI  :  10.1088/1742-6596/830/1/012155

来源: IOP

【 摘 要 】

Simulation of laser heat absorbing inclusions in a transparent matrix of explosive material is carried out. The inclusions are spherical particles with R0radius ranging from 10-5to 10-2cm. The duration of the laser pulse varies from 10-9to 10-3s and allows investigating process in both adiabatic and quasi-stationary heating modes. It has been found that the duration of laser pulse affects the maximum heating temperature for particles with a specific radius. A remarkable thing is that the temperature drastically decreases if the absorption cross section and small size of inclusions are taken into account. It leads to heat reduction in a thermal center, which is formed nearby a small-sized inclusion, and shows strongly decreased reactive capacity of explosive decomposition.