On the influence of the density of laser beam energy on the sensitivity of explosive substances to laser radiation
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- Category: Solid State Physics, Mineral Processing
- Last Updated on 07 January 2019
- Published on 26 December 2018
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Authors:
O.L.Kyrychenko, Cand. Sc. (Tech.), orcid.org/0000-0002-1331-9323, State Enterprise Research-Industrial Complex “Pavlohrad Chemical Plant”, Pavlohrad, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Abstract:
Purpose. Determining the patterns of distribution of energy density over the laser beam diameter and the features of influence of beam diameter on the change in sensitivity of explosives to laser pulsed radiation.
Methods. Experimental investigations of initiation of explosion of certain initiating explosives which are light-sensitive to the action of laser radiation. Analysis and synthesis of investigation results.
Findings. The experimental investigations have been carried out and the results have been assessed. The functional independence of the size effect on the laser generation has been determined.
Originality. It has been established that the values of the threshold energy density and the critical density of the minimum threshold energy of initiation of lead azide samples in the form of pre-compressed powder and microparticles distributed in the polymer matrix depend on the diameter of the laser beam. As the diameter increases, the threshold energy density of initiation decreases sharply, while the critical density of the minimum threshold energy of initiation rises. The patterns are maintained regardless of the way the samples are made. The function of the distribution of irradiance in the volume of explosive does not depend on the laser power density. The increase in the optical strength of the diffusing medium with a decrease in the laser beam ‒ medium interaction zone is associated with a decrease in the number of absorbing microinhomogeneities, and is accompanied by a sharp increase in the statistical dispersion of the experimental data. In this case the medium is diffusive, so the initiation occurs at a certain depth, where a dispersion halo is able to form.
Practical value. The method of laser excitation of detonation is a promising for application to various means of initiation, in particular, when blasting charges from explosive microvolumes to the simultaneous detonation of the whole explosive surface with an area of several square meters.
References.
1. Sobolev, V., Chernai, A. and Studinsky, N., 1996. OPSIN – a new system of blast-hole change blasting in explosives. In: Procedings of the Fifth International Simposium on Mine Planning and Equipment Selection. Rotterdam: AA Brakeman Publishers [online], pp. 441‒443. Available at: <https://www.bookdepository.com/Mine-Planning-and-Equipment-Selection-96-Proceedings-of-the-Fifth-International-Symposium-Sao-Paulo-Brazil-22-24-October-1996-WT-Hennies-Etc-L-Ayres-de-Silv-P-Chaves/9789054108276?ref=bd_recs_1_1> [Accessed 11 September 2017].
2. Kuratov, S., Serezhkin, A. and Chesnokov, A., 2015. Physico-Mathematical Model of Laser Detonator. Physical-Chemical Kinetics in Gas Dynamics, 16(1), pp. 1‒9.
3. Sazonnikova, N. A., 2013. Laser initiation of detonation of high-energy substances. Saarbrücken: LAP LAMBERT Academic Publishing GmbH&CO.KG.
4. Hand, C. F., 2010. Novel 300-watt single-emitter laser diodes for laser initiation applications. Proc. SPIE 7795, Optical Technologies for Arming, Safing, Fuzing and Firing VI [e-journal], Volume 7795, 779507. DOI: 10.1117/12.861447.
5. Iliushin, M. A., Kotomin, A. A., Dushenok, S. A. and Yefanov, E. F., 2017. Laser initiation a photosensitive energy materials, that are promising for systems pyroautomatic spacecrafts. Vestnik NPO imeni S. A. Lavochkina [pdf], 1(35), pp. 43‒52. Available at: <http://www.laspace.ru/upload/iblock/c1d/c1d4330a58a437cdce27cd471b97975c.pdf> [Accessed 24 January 2018].
6. Iliushin, M. A., Tselinskii, I. V. and Kotomin, A. A., 2013. High power substances for arsenal of initiation. St. Petersburg: SPbGTI(TU).
7. Iliushin, M. A., Smirnov, A. V., Sudarikov, A. M. and Tselinskii, I. V., 2010. Metallic complexes in high-energy materials, St. Petersburg: LGU im. A. S. Pushkina [online]. Available at: <https://search.rsl.ru/ru/record/ 01004801337> [Accessed 3 November 2017].
8. Fang, X. and Ahmad, S. R., 2016. Laser Ignition of an Optically Sensitised Secondary Explosive by a Diode Laser. Central European Journal of Energetic Materials, 13(1), pp. 103‒115.
9. Chernai, A. V., Sobolev, V. V., Chernai, V. A., Iliushin, M. A. and Dlugashek, A., 2003. Laser initiation of charges on the basis of di-(3-hydrazino-4-amino-1,2,3-triazol)-copper (II) perchlorate. Fizika Goreniya i Vzryva [pdf], 39(3), pp. 105‒110. Available at: <http://www.sibran.ru/upload/iblock/c21/c21aeefbffd79e0c9dbcdd538dc9d9fd.pdf> [Accessed 11 September 2017].
10. Chernai, A. V., Sobolev, V. V., Iliushin, M. A. and Zhitnik, N. E. 1994. Generating mechanical pulses by the laser blasting of explosive coating. Combustion, Explosion, and Shock Waves, 30(2), pp. 239‒242. DOI: 10.1007/BF00786134.
11. Chernai, A. V., Sobolev, V. V., Iliushin, M. A. and Zhitnik, N. E., 1994. The method of obtaining mechanical loading pulses based on a laser initiation of explosion of explosive coatings. Fizika Goreniya i Vzryva [pdf], 30(2), pp. 106‒111. Available at: <http://www.sibran.ru/upload/iblock/789/789051705b1d5f2d37dbb20809f27ca8.pdf> [Accessed 4 October 2017].
12. Chernai, A. V. and Sobolev, V. V., 1995. Laser method of profiled detonation wave generation for explosion treatment of materials. Fizika i Khimiya Obrabotki Materialov [online], 5, pp. 120‒123. Available at: <https://www.researchgate.net/publication/287674128_Laser_method_of_profiled_detonation_wave_generation_for_explosion_treatment_of_materials> [Accessed 17 September 2017].
13. Tverianovich, A., Averyanov, A., Iliushin, M., Tverianovich, Yu. and Smirnov, A., 2015. Effect of laser radiation on perchlorate (1,5-diaminotetrazole–n2) pentaamminecobalt (III). Universum: Chemistry and Biology [online], 12(19), pp. 1‒15. Available at: <http:// 7universum.com/ru/nature/archive/item/2806> [Accessed 9 September 2017].
14. Kennedy, J. E. and Chapter, I. I., 2010. Spark and Laser Ignition. in Shock Wave Science and Technology Reference Library. Vol. 5: Non-Shock Initiation of Explosives. Asay B. W. ed. Berlin, Heidelberg: Springer-Verlag [online], pp. 583‒605. Available at: <https://www.springer.com/gp/book/9783540879527> [Accessed 20 October 2017].
15. Sobolev, V. V., Shyman, L. N., Nalisko, N. N. and Kirichenko, А. l., 2017. Computational modeling in research of ignition mechanism of explosives by laser radiation. Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, 6, pp. 53‒60.
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