Petn initiation by a light-induced explosion of a metal film

Таржанов, В. И.; Zinchenko, A. D.; Smirnov, B. N.; Pogrebov, A. I.; Sdobnov, V. I.; Tokarev, B. B.

doi:10.1007/bf02097093

Cited by 7 publications

(4 citation statements)

References 3 publications

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“…ffi ffi ffi ffi ffi ffi at r p r expðÀ y 2 0 À z r erfc ðy 0 Þ " # ; (14) DT s ¼ T s À T 0 ¼ 2q 0 l ffi ffi ffi ffi ffi ffi at r p r : (15) Taking this solution into account, equation (12) can be rewritten in the following form…”

Section: Effect Of Decomposition Of Cuo Film On Ignition Of Organic Ementioning

confidence: 99%

“…As a result, to initiate organic EM with an open surface by a light pulse in a given spectral range, a high-power laser is needed [10]. In practice, to reduce the ignition threshold, the sample is usually covered with a transparent glass plate, and light absorbing particles ("hot spots") are introduced into the samples or laser absorbing films are applied to the EM surface [11][12][13][14][15][16][17]. Recently, works have appeared on the ignition of EM by metal particles heated to high temperatures, simulating the ignition of EM by ultrashort laser pulses, see, for example, [18].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Decomposition of CuO Film on Ignition of Organic Explosives by a Laser Pulse

Khaneft

Mitrofanov

Зверев

2019

Propellants Explo Pyrotec

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This work presents experimental results of the PETN ignition in a three-layer system: glass -copper oxide ( CuO) -explosive materials (EM) and results of numerical simulations of the ignition of PETN, RDX, HMX, and TATB with a CuO film heated by a YLS-150 fiber laser with a pulse duration of 20 ms. In the numerical simulations, the endothermic reaction of decomposition of the CuO film and decomposition reaction of EM were taken into account. It has been established that the endothermic effect of the CuO decomposition reaction increases the dynamic ignition delay time of EM. The expression for an estimation of width of a reaction layer in EM at heating by a constant heat stream is obtained. Calculations have shown that the dynamic threshold of ignition of organic explosives by laser pulse in a three-layer system (glass -CuO -EM) has a minimum for the thickness of the copper oxide film of 5 mm. The density of the critical ignition energy of an explosive laser pulse increases in the sequence of PETN, RDX, HMX, and TATB. The calculated dependence of the PETN dynamic ignition delay time on the thickness of the CuO film is consistent with the experimental data.

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Section: Effect Of Decomposition Of Cuo Film On Ignition Of Organic Ementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of Decomposition of CuO Film on Ignition of Organic Explosives by a Laser Pulse

Khaneft

Mitrofanov

Зверев

2019

Propellants Explo Pyrotec

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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%

“…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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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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Preexplosion Phenomena in Prompt Initiation of Secondary Explosives (Review)

Таржанов

2003

Combustion, Explosion, and Shock Waves

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Petn initiation by a light-induced explosion of a metal film

Cited by 7 publications

References 3 publications

Effect of Decomposition of CuO Film on Ignition of Organic Explosives by a Laser Pulse

Effect of Decomposition of CuO Film on Ignition of Organic Explosives by a Laser Pulse

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

Preexplosion Phenomena in Prompt Initiation of Secondary Explosives (Review)

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