Photodissociation of 2, 4, 6-trinitrotoluene with a Nd:YAG laser at 532nm

Wei Zhang; Ruiqi Shen; Yinghua Ye; Lizhi Wu; Yan Hu; Peng Zhu

doi:10.1117/12.2181827

4 May 2015 Photodissociation of 2, 4, 6-trinitrotoluene with a Nd:YAG laser at 532nm

Wei Zhang, Ruiqi Shen, Yinghua Ye, Lizhi Wu, Yan Hu, Peng Zhu

Proceedings Volume 9543, Third International Symposium on Laser Interaction with Matter; 95431A (2015) https://doi.org/10.1117/12.2181827
Event: Third International Symposium on Laser Interaction with Matter, 2014, Jiangsu, China

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.

Citation Download Citation

Wei Zhang, Ruiqi Shen, Yinghua Ye, Lizhi Wu, Yan Hu, and Peng Zhu "Photodissociation of 2, 4, 6-trinitrotoluene with a Nd:YAG laser at 532nm", Proc. SPIE 9543, Third International Symposium on Laser Interaction with Matter, 95431A (4 May 2015); https://doi.org/10.1117/12.2181827

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