Characteristic wavelength analysis for laser-induced initiation in energetic material

LIU Jian; XIONG Ying; JIANG Xiao-hua; JIANG Ming

doi:10.7510/jgjs.issn.1001-3806.2013.06.025

In order to reduce the laser initiation energy and understand effect of laser wavelength on initiation sensitivity of explosives, the weak chemical bond and sensitive laser wavelength of PETN, RDX, HMX and HNS explosives were analyzed through spectrum, thermal decomposition mechanism and quantum mechanics calculation. Results show that the weakest chemical bond of PETN, RDX, HMX and HNS are nitryl whose correspondent resonant coupling laser wavelength is around 6300nm,and the laser wavelength inducing electronic transition of PETN, RDX, HMX and HNS explosives is among 190nm~250nm. Under the action of laser at these characteristic wavelengths, laser initiation energy of explosives can be decreased.

Characteristic wavelength analysis for laser-induced initiation in energetic material

1. Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang 621900, China

Received Date: 2013-01-30

Accepted Date: 2013-03-15

Available Online: 2013-11-25

Abstract: In order to reduce the laser initiation energy and understand effect of laser wavelength on initiation sensitivity of explosives, the weak chemical bond and sensitive laser wavelength of PETN, RDX, HMX and HNS explosives were analyzed through spectrum, thermal decomposition mechanism and quantum mechanics calculation. Results show that the weakest chemical bond of PETN, RDX, HMX and HNS are nitryl whose correspondent resonant coupling laser wavelength is around 6300nm,and the laser wavelength inducing electronic transition of PETN, RDX, HMX and HNS explosives is among 190nm~250nm. Under the action of laser at these characteristic wavelengths, laser initiation energy of explosives can be decreased.

HTML

Reference (14)

[1]	YONG L D, NGUYEN T, WASCHL J. Laser ignition of explo-sives, pyrotechnics and propellants:a review. Commonwealth, Australia: Defence Science and Technology Organisation, 1996:1- 4.
[2]	MANPREET S, SETHI V S. Laser initiation of explosives[J]. Proceedings of SPIE, 2002, 4760: 700-705.
[3]	AHMAD S R, RUSSELL D A, GOLDING P. Laser induced deflagration of unconfined HMX-the effect of energetic binders[J]. Propellants, Explosives, Pyrotechnics, 2009, 34(6): 513-519.
[4]	CHERNAI A V, SOBOLEV V V, CHERNAI V A, et al. Laser ignition of explosive compositions based on di-(3-hydrazino-4-amino-1,2,3-triazole)-copper (Ⅱ) perchlorate[J]. Combustion, Explosion, and Shock Waves, 2003, 39(3):335-339.
[5]	XU J, WU L Z, SHEN R Q, et al. Effects of dopants and confined windows on laser initiation sensitivity of explosives[J]. Chin-ese Journal of Explosives & Propellants, 2011, 34(1):77-85(in Chinese).
[6]	WANG Q. Study on the identity and discipline of laser initiation explosives[D]. Nanjing:Nanjing University of Science and Technology, 2008:33-34(in Chinese).
[7]	MIZIOLEK A W, SAUSA R C. Photochemical ignition studies.Ⅰ. Laser ignition of floeing premixed gases[R]. Maryland,USA:Army Ballistic Research Laboratory Aberdeen Proving Ground, 1985:18.
[8]	SHENG D L, ZHU Y H,CHEN L K, et al. Interactional mechanism between laser and energetic compound[J]. Chinese Journal of Energetic Materials, 2008, 16(5): 481-486(in Chinese).
[9]	LIAU Y C, KIM E S,YANG V. Comprehensive analysis of laser-induced ignition of RDX monopropellant[J]. Combustion and Flame,2001, 126(3):1680-1698.
[10]	LIU Z R, LIU Y, FAN X P, et al.Thermal decomposition of RDX and HMX explosives part Ⅲ: mechanism of thermal decomposition[J]. Chinese Jounal of Explosives & Propellants, 2006, 29(4):14-18(in Chinese).
[11]	CHEN Z Q, ZHENG X H, LIU Z R. Thermal behavior of HNS[J]. Chinese Journal of Energetic Materials, 2005, 13(4):249-251(in Chinese).
[12]	SHENG D L, WANG Y L, ZHU Y H, et al. Quantum-chemical studies on tetraamminebis (5-nitrotetrazolato) cobalt (Ⅲ) perchlorate(BNCP)[J]. Initiators & Pyrotechnic, 2010(3):34-38(in Chinese).
[13]	FRISCH M J, TRUCKS G W, SCHLEGEL H B. Gaussian 03, Revision A.1[M].Pittsburgh, PA,USA:Gaussian Inc,2003:62-66.
[14]	BACKE A D. Density-functional thermochemistry.Ⅲ. The role of exact exchange[J]. The Journal of Chemical Physics, 1993, 98(7): 5648-5652.

Characteristic wavelength analysis for laser-induced initiation in energetic material

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Proportional views