光谱学与光谱分析 |
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Research on Inorganic Explosive and Its Principal Component with Laser-Induced Breakdown Spectroscopy |
ZHAO Hua, WANG Qian-qian*, LIU Kai, GE Cong-hui |
College of Optoelectronics, Beijing Institute of Technology, Beijing 100081, China |
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Abstract Laser-induced breakdown spectroscopy is a technology that can be used for high-speed, real time, multi-component, online, remote detection, and it has considerable superiority in explosives detection. In the present experiment, using 1 064 nm Q-switch laser beam as the resource, the authors investigated a common inorganic explosive (black powder) and one of its key components (KNO3), while choosing NaNO3 as the reference. We obtained the LIBS spectroscopy of these three samples in two surrounding atmospheres (air and Ar gas) at different time delay. And we analysed the change in line intensity ratio of N, O along with the increase in time delay, and found that the maximum of the value of O/N is obtained at time delay 596 ns.
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Received: 2011-05-23
Accepted: 2011-10-10
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Corresponding Authors:
WANG Qian-qian
E-mail: qqwang@bit.edu.cn
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