The results of measurements of the threshold of explosive decomposition of PETN with 0.1 wt % additives of aluminum nanoparticles under the action of the first and second harmonics of a YAG:Nd3+...

A study was made of the explosion probability and the pressure of explosive decomposition products of PETN samples of density 1.73 g/cm³ with different contents of Al nanoparticles under pulsed laser irradiation (1060 nm; 20 ns). It was experimentally found that the maximum sensitivity and maximum pressure of explosion products are obtained when the mass concentration of nanoparticles is 0.1%. In this case, the mixture sensitivity increases by factor of ≈100 with respect to the samples containing no nanoparticles. The observed effect is due to radiation absorption directly by nanoparticles with the formation of “hot spots,” which initiates an exothermic reaction in the main substance. It is shown that the addition of 0.1% Al decreases the impact sensitivity with respect to the samples without additives. This makes it possible to consider this mixture as a promising material for optical detonators.

The dependences of the transmission coefficients and the sum of the transmission and absorption coefficients for light with a wavelength of 643 nm in compressed pentaerythritol tetranitrate (PETN)...

The explosive probability of PETN with various contents of nickel nanoparticles in samples is determined as a function of the energy density of the initiating laser pulse (λ = 1064 nm, τ = 14 ns)....

The thresholds of explosive decomposition of PETN (pentaerythrite tetranitrate) with the addition of ultrafine Al-C mechanocomposite particles were measured as a function of the concentration of the l