Experimental Study of Laser Initiation of a Light-Sensitive Explosive Charge over a ≈1000 mm2Surface

Khokhlov, N. P.; Pon’kin, N. A.; Luk’yanenko, I. A.; Rudnev, A. V.; Lukovkin, O. M.; Sheikov, Yu. V.; Bat’yanov, S. M.

doi:10.1134/s0010508221030126

Cited by 2 publications

(2 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To simulate subshort pulses, it is necessary to search for new explosives being anomalously sensitive to the initiating action of a pulse light source. In this context, laser initiation of plane charges (diameter is 4.0 cm; thickness is 0.5 cm) made from a mixture of highly dispersed RDX and aluminium powders was studied in [60]. The energy density of laser radiation was 10 J/cm 2 , more than two orders of magnitude higher than the values given in Table 2 for explosive composites [38].…”

Section: Measurement Of the Lsec Explosion Pulsesmentioning

confidence: 99%

Profiled Detonation Waves in the Technologies of Explosion Treatment of Metals

Sobolev,

Skobenko,

Kononenko

et al. 2024

Metallofiz. Noveishie Tekhnol.

View full text Add to dashboard Cite

A short review is represented concerning physicotechnical features of current technologies, plane-wave, converging cylindrical and spherical detonation waves used in physics and chemistry of high energy densities, physics of metals, materials science, machine building, and mining and metallurgical industry. The main drawbacks of existing technologies are shown, and attention is focused on the technical nature of the reasons limiting their application. Attention is paid to solving the problem of simultaneous initiation of detonation of the entire surface layer of a light-sensitive explosive, regardless of the shape of the surface. A physical and mathematical methodology for estimating shock-wave parameters of an explosive during initiation of detonation in it by explosion of the initiation layer of the charge of a lightsensitive explosive composite is proposed. Prospects of practical application of detonation (shock) waves of the specified profile formed by laser ignition of the surface of a light-sensitive explosive composite are discussed. Physicochemical potential of the system of laser initiation of detonation makes it possible to form any wave profiles and get pulses of the intensity from 0.1 to 1.0 kPa⋅s on the surfaces being more than 1 m 2 . Precision and safe system of laser initiation can be used during any types of blasting operations including the ones that cannot be implemented principally, while applying standard systems for initiating explosives and means of explosion.

show abstract

Section: Measurement Of the Lsec Explosion Pulsesmentioning

confidence: 99%

Profiled Detonation Waves in the Technologies of Explosion Treatment of Metals

Sobolev,

Skobenko,

Kononenko

et al. 2024

Metallofiz. Noveishie Tekhnol.

View full text Add to dashboard Cite

show abstract

“…Aluker et al [24] and Aduev et al [25,26] use the combined action of neodymium glass laser (1060 nm) excitation and copper heating to detonate PETN, study the initiation mechanism of energetic material, and find that in the PETN laser initiation, a 1.17 eV laser photon firstly induces PETN molecule light excitation, and then the PETN molecule transitions to the 0.4 eV energy barrier through the heating process. Khokhlov et al [27] experimentally study the LIHE loading and laser initiation, and also study the detonation and transformation of flatly loaded explosive, with a diameter of 40 mm and a thickness of 5 mm, and the LIHE with a low density (ρ ≈ 0.9 g/cm 3 ) made of fine-particle RDX and aluminum. Zhang et al [28][29][30][31] study the laser-sensitive energetic complex primary explosive, analyze the advantages and problems of all kinds of agents, partially summarize the laser initiation mechanism, and expect the research and development of future new laser-initiating explosives.…”

Section: Introductionmentioning

confidence: 99%

Study on Characteristics of the Light-Initiated High Explosive-Based Pulse Laser Initiation

Wang

Zhang

et al. 2022

Materials

View full text Add to dashboard Cite

The silver acetylene silver nitrate loading technology of the light initiated high explosive, as one of important means to simulate the structural response of powerful pulsed X-ray, adopts the pulse laser initiation. It has advantages of improvement of practical control, heterogenous loading realization and simultaneous loading timeliness. In this paper, the physical and mathematical models of hot spot initiation and photochemical initiation of energetic materials under the action of laser are firstly established, and then the laser initiation mechanism of the light initiated high explosive is specifically analyzed, and the laser initiation experiment is conducted based on the optical adsorption property of the light initiated high explosive. From this study, the laser initiation thresholds of 193 nm, 266 nm, 532 nm, 1064 nm wavelengths are given, and they are 5.07 mJ/mm2, 6.77 mJ/mm2, 7.21 mJ/mm2 and 10.61 mJ/mm2, respectively, and the complete detonation process is verified by detonation velocity. This work technically supports the study of pulse laser initiation process, mechanism and explosion loading rule as well as the loading technology of the light initiated high explosive to simulate the structural response of X ray.

show abstract

Experimental Study of Laser Initiation of a Light-Sensitive Explosive Charge over a ≈1000 mm2Surface

Cited by 2 publications

References 6 publications

Profiled Detonation Waves in the Technologies of Explosion Treatment of Metals

Profiled Detonation Waves in the Technologies of Explosion Treatment of Metals

Study on Characteristics of the Light-Initiated High Explosive-Based Pulse Laser Initiation

Contact Info

Product

Resources

About