Laser initiation of PETN–iron nanoparticle composites

Aduev, B. P.; Нурмухаметов, Д. Р.; Zvekov, A. A.; Nikitin, A. P.; Kovalev, R. Yu.

doi:10.1134/s1990793116040023

Cited by 10 publications

(3 citation statements)

References 21 publications

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“…Figure 5 b shows the values of the initiation thresholds of PETN-ZnO:Cu and ZnO:Fe, as well as PETN-based composites with light-absorbing additives of metal nanoparticles [ 6 , 10 , 42 , 43 , 44 ]. The materials containing aluminum nanoparticles have the highest laser sensitivity due to nano-aluminum’s high chemical activity [ 4 , 45 ].…”

Section: Resultsmentioning

confidence: 99%

“…The PETN-ZnO:Fe effective extinction index should be lower than 20 cm −1 . The effective extinction index of PETN composites with the addition of aluminum, iron, and nickel nanopowder was about 100–300 cm −1 [ 36 , 43 , 44 ]. The measured extinction index of the PETN-ZnO:Cu composite was about 2–3 times lower, and the measured extinction index of PETN-ZnO:Fe was at least an order of magnitude lower than energetic composites with metal nanoparticles.…”

Section: Resultsmentioning

confidence: 99%

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Iron and Copper Doped Zinc Oxide Nanopowders as a Sensitizer of Industrial Energetic Materials to Visible Laser Radiation

et al. 2022

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The development of methods ensuring reliable control over explosive chemical reactions is a critical task for the safe and efficient application of energetic materials. Triggering the explosion by laser radiation is one of the promising methods. In this work, we demonstrate a technique of applying the common industrial high explosive pentaerythritol tetranitrate (PETN) as a photosensitive energetic material by adding zinc oxide nanopowders doped with copper and iron. Nanopowders of ZnO:Fe and ZnO:Cu able to absorb visible light were synthesized. The addition of one mass percent nanopowders in PETN decreased the threshold energy density of its initiation through Nd:YAG laser second harmonic (2.33 eV) by more than five times. The obtained energetic composites can be reliably initiated by a CW blue laser diode with a wavelength of 450 nm and power of 21 W. The low threshold initiation energy and short irradiation exposure of the PETN-ZnO:Cu composite makes it applicable in laser initiation devices. PETN-ZnO:Cu also can be initiated by an infrared laser diode with a wavelength of 808 nm. The proposed photochemical mechanism of the laser-induced triggering of the explosion reaction in the studied energetic composites was formulated. The results demonstrate the high promise of using nanomaterials based on zinc oxide as a sensitizer of industrial energetic materials to visible laser radiation.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Iron and Copper Doped Zinc Oxide Nanopowders as a Sensitizer of Industrial Energetic Materials to Visible Laser Radiation

et al. 2022

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“…The development of new technologies for ignition and combustion intensification of coal is impossible without a detailed study of the initial mechanisms of its ignition. When studying the mechanisms of coals ignition the laser radiation [1][2][3][4][5] can be used as an ignition source, and to register fast processes it is possible to use electron-optical methods [1][2][3]5] and the method of spectroscopy with high time resolution [6][7][8]. We present some results of such studies.…”

Section: Introductionmentioning

confidence: 99%

Spectral Characteristics of the Glow of Coal Flames during the Exposure to Laser Pulses

Aduev

Нурмухаметов

et al. 2022

Optics and Spectroscopy

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The results of measuring the characteristics of the glow of coal flames at the initial moments of ignition under the action of laser pulses of a neodymium laser (1064 nm, 120 μs) are presented. In microparticles of coal grades DG, G, Zh, and K, when the corresponding critical energy densities are exceeded during a laser pulse, the surface ignites and flame propagates at a speed of V~50 m/s. The emission spectra of flames are contributed by the emission of emitted hot coal particles, excited H2* and H2O* molecules, as well as the flame emission arising from the oxidation of carbon (CO*) and carbon monoxide (CO2*) by atmospheric oxygen. Keywords: coal, laser, ignition, flame, volatile substances, degree of coalification, coke residue.

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RDX-Al and PETN-Al composites’ glow spectral kinetics at the explosion initiated with laser pulse

Aduev¹,

Нурмухаметов²,

Liskov³

et al. 2021

Combustion and Flame

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Laser initiation of PETN–iron nanoparticle composites

Cited by 10 publications

References 21 publications

Iron and Copper Doped Zinc Oxide Nanopowders as a Sensitizer of Industrial Energetic Materials to Visible Laser Radiation

Iron and Copper Doped Zinc Oxide Nanopowders as a Sensitizer of Industrial Energetic Materials to Visible Laser Radiation

Spectral Characteristics of the Glow of Coal Flames during the Exposure to Laser Pulses

RDX-Al and PETN-Al composites’ glow spectral kinetics at the explosion initiated with laser pulse

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