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Advances in Condensed Matter Physics
Volume 2014 (2014), Article ID 219547, 8 pages
http://dx.doi.org/10.1155/2014/219547
Research Article

Defects-Induced Hot Spots in TATB

1Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China
2School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China
3Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang 621900, China

Received 1 March 2014; Accepted 23 May 2014; Published 17 June 2014

Academic Editor: Kai Sun

Copyright © 2014 Zhonghua Yan et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

We investigate the interaction between the laser and energetic materials with different defects. The three-dimensional models of triaminotrinitrobenzene (TATB) explosives containing spherical pores, craters, and cracks are established, respectively. The laser ignition process of TATB is simulated with three-dimensional finite difference time domain (3D-FDTD) method to study the electromagnetic field distribution surrounding these defects with 355 nm laser incidence. It indicates that the larger defects in the TATB energetic materials have the stronger electric field modulations to initial incident laser for all the three defects, which is easier to lead to the generation of hot spots. Furthermore, TATB materials with spherical pore defects and crater defects are easier to form hot spots than those with narrow crack defects.