Quantitative correlation between facets defects of RDX crystals and their laser sensitivity

Zhonghua Yan; Wei Liu; Chuanchao Zhang; Xuming Wang; Jinshan Li; Zongwei Yang; Xia Xiang; Ming Huang; Bisheng Tan; Guorui Zhou; Wei Liao; Zhijie Li; Li Li; Hongwei Yan; Xiaodong Yuan; Xiaotao Zu

doi:10.1016/j.jhazmat.2016.03.071

Quantitative correlation between facets defects of RDX crystals and their laser sensitivity

J Hazard Mater. 2016 Aug 5:313:103-11. doi: 10.1016/j.jhazmat.2016.03.071. Epub 2016 Mar 28.

Authors

Zhonghua Yan¹, Wei Liu², Chuanchao Zhang³, Xuming Wang⁴, Jinshan Li⁵, Zongwei Yang⁵, Xia Xiang⁴, Ming Huang⁵, Bisheng Tan⁵, Guorui Zhou³, Wei Liao³, Zhijie Li⁴, Li Li⁴, Hongwei Yan³, Xiaodong Yuan⁶, Xiaotao Zu⁷

Affiliations

¹ School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China; Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China.
² School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China. Electronic address: weiliu@uestc.edu.cn.
³ Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China.
⁴ School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China.
⁵ Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang 621900, China.
⁶ Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China. Electronic address: yxd66my@163.com.
⁷ School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China; Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, China. Electronic address: xtzu@uestc.edu.cn.

PMID: 27054669
DOI: 10.1016/j.jhazmat.2016.03.071

Abstract

In this work, the {210} facets of cyclotrimethylenetrinitramine (RDX) single crystals with different quality were studied by scanning electron microscopy and atomic force microscopy. Their laser sensitivity was then assessed using a direct laser ignition test irradiated with ultraviolet laser (wavelength: 355nm, pulse width: 6.4ns). Quantitative relationships between laser sensitivity and surface defects of RDX (210) and (2¯1¯0) facets were investigated. It is determined that the laser sensitivity exhibits significant correlation with the surface roughness, size of which is comparable with scales of laser wavelength. 3D FDTD simulations disclose that this relationship can be well explained with light intensity modulation effects induced by micro-defects on the initial plane wave.

Keywords: Ignition threshold; Laser sensitivity; RDX crystal facet; Surface defects.

Publication types

Research Support, Non-U.S. Gov't