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Proceedings Paper

Photodissociation of 2, 4, 6-trinitrotoluene with a Nd:YAG laser at 532nm
Author(s): Wei Zhang; Ruiqi Shen; Yinghua Ye; Lizhi Wu; Yan Hu; Peng Zhu
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Paper Abstract

2, 4, 6-Trinitrotoluene (TNT) belongs to the group of aromatic nitro compounds which have extended use in industrial applications, in particular as explosives or additives to explosives. Understanding the initial step of laser induced decomposition of common explosives is important to the reliability and safety of laser initiators and firing systems. Lasers coupled with mass spectrometer find wide application in photochemical studies for identification of different ions formed due to photoexcitation/ionization of molecules by laser. In this paper, a pulsed Nd: YAG (15ns, 532nm) laser was used for ionizating the condensed TNT sample, and the ions produced in the ionization process were detected by a time of flight mass spectrometer (TOFMS). The influence of laser fluence and the delay time to the decomposition was also studied. According to the assignment of both positive and negative ions, possible laser induced dissociation pathways were proposed. The results may tell much about the initiation process and the chemical reaction that may occur in TNT when exposed to laser pulse.

Paper Details

Date Published: 4 May 2015
PDF: 6 pages
Proc. SPIE 9543, Third International Symposium on Laser Interaction with Matter, 95431A (4 May 2015); doi: 10.1117/12.2181827
Show Author Affiliations
Wei Zhang, Nanjing Univ. of Science and Technology (China)
Ruiqi Shen, Nanjing Univ. of Science and Technology (China)
Yinghua Ye, Nanjing Univ. of Science and Technology (China)
Lizhi Wu, Nanjing Univ. of Science and Technology (China)
Yan Hu, Nanjing Univ. of Science and Technology (China)
Peng Zhu, Nanjing Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 9543:
Third International Symposium on Laser Interaction with Matter
Yury M. Andreev; Zunqi Lin; Xiaowu Ni; Xisheng Ye, Editor(s)

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