Reduction of energy of laser initiation of energetic materials

Assovskiy, Igor G.; Kozynda, V. V.

doi:10.1134/s0012501612020042

Cited by 4 publications

(2 citation statements)

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“…This is because the laser initiation is immune to electrical signals, which allows one to avoid accidental initiation of explosive material (EM). The second reason for studying the processes of condensed EM ignition is that it is caused by directed regulation of the ignition delay time, and the threshold density of the energy of initiation EM by laser impulses of various duration, intensity, and diameter of the light beam and spectral range [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. Organic EM in the impurity absorption region has an insignificant absorption coefficient.…”

Section: Introductionmentioning

confidence: 99%

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The Effect of Metal Film Thickness on Ignition of Organic Explosives with a Laser Pulse

2019

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The results of numerical ignition simulation of pentaerythritol tetranitrate (PETN), cyclotrimethylene trinitramine (RDX), cyclotetramethylene tetranitramine (HMX) and 1,3,5-triamino-2,4,6-trinitrobenzene (TATB) by aluminium (Al) and molybdenum (Mo) films heated by nanosecond laser pulses in a three-layer system: glass–metal–explosive material (EM) are presented. Influence of metal film thickness on the time of EM ignition delay was considered. A non-linier dependence of time of delay of ignition of EM from thickness of a metal film is shown. The greatest critical thicknesses of Al and Mo metallic films at which ignition of EM is still possible were determined. It was established that the greater the thickness of the metal film and heat resistance of EM, the greater the heat reserve needed in EM ignition film. It was established that the ignition delay time of EM increases in the sequence of PETN, RDX, HMX and TATB.

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Section: Introductionmentioning

confidence: 99%

“…Thus, for example, they are practically transparent at the length of a neodymium λ ∼ 1.0 µm laser [1]. The initiation threshold of an explosive by a laser pulse is reduced by introducing light-absorbing particles into samples or by applying laser radiation-absorbing films on the explosive surface [2,4,10,14,15,18,19].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Metal Film Thickness on Ignition of Organic Explosives with a Laser Pulse

2019

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Ignition of Organic Explosive Materials by a Copper Oxide Film Absorbing a Laser Pulse

Dolgachev

Khaneft

Mitrofanov

2018

Propellants Explo Pyrotec

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This work present experimental results of PETN ignition and of numerical simulations of PETN, RDX, HMX, and TATB ignition by a copper oxide (CuO) film heated using a millisecond fiber laser YLS‐150. It was established that the dynamic ignition threshold of organic explosive materials (EM) in a three‐layer system (glass – CuO – EM) by a laser pulse has a minimum at the CuO film thickness of 12 μm . The density of the critical ignition energy of EM is increasing in the sequence of PETN, RDX, HMX, and TATB with PETN having the smallest and TATB having the highest density of the critical ignition energy.

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Micro hot-spot model of thermal explosion taking into account dielectric shell of sensitizing nanoparticle

Kalenskii

Zvekov

Anan’eva

et al. 2018

J. Phys.: Conf. Ser.

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Reduction of energy of laser initiation of energetic materials

Cited by 4 publications

References 0 publications

The Effect of Metal Film Thickness on Ignition of Organic Explosives with a Laser Pulse

The Effect of Metal Film Thickness on Ignition of Organic Explosives with a Laser Pulse

Ignition of Organic Explosive Materials by a Copper Oxide Film Absorbing a Laser Pulse

Micro hot-spot model of thermal explosion taking into account dielectric shell of sensitizing nanoparticle

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